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Process Piping Contractors

Last updated: March 2026

This directory lists 104 process piping contractors across the United States, from specialized high-purity installers for biopharma to heavy industrial fabricators for chemical plants.

Buyers engage process piping contractors to solve critical challenges like expanding existing production lines, constructing greenfield manufacturing facilities, retrofitting legacy systems for improved efficiency, or upgrading infrastructure to meet stricter environmental or safety regulations. These projects often involve complex fluid dynamics, heat transfer, and ensuring precise delivery of everything from potable water to hazardous chemicals or cryogenic gases.

Suppliers in this space vary significantly. Some focus entirely on modular spool fabrication, delivering pre-tested sections ready for on-site installation. Others are full-service engineering, procurement, and construction (EPC) firms capable of designing, fabricating, and installing entire process units. You'll also find specialists in specific materials like stainless steel for food & beverage, or carbon steel for oil & gas, and those with certifications for cleanroom or hazardous area work.

To ensure a smooth engagement, buyers should come prepared with detailed Piping and Instrumentation Diagrams (P&IDs), material specifications (e.g., specific grade of 316L stainless steel), required testing protocols (e.g., hydrostatic testing pressures, NDE requirements), and a clear scope of work. Contractors, in turn, expect access to site specifics, scheduling details, and clearly defined safety parameters to accurately scope and bid on the project.

A notable trend in process piping is the increased adoption of modular fabrication and pre-assembly, driven by desires for improved quality control, reduced on-site labor costs, and compressed project schedules. This shift also includes greater integration of 3D modeling and Building Information Modeling (BIM) tools to enhance constructability reviews and clash detection, minimizing expensive field modifications.

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Company Directory

104 companies nationwide

South San Francisco, CA

Based in South San Francisco, CA, ACCO Engineered Systems specializes in process piping services. They provide comprehensive design, fabrication, and commissioning for critical applications in pharmaceuticals, microelectronics, and biotech industries, supporting complex engineering projects with their expertise.

Atlanta, GA

Based in Atlanta, GA, Action Electrical and Mechanical Contractors is an industrial contractor providing comprehensive services including electrical, mechanical, civil, millwright, and industrial automation. The company specializes in pipe fitting and delivering turn-key solutions for diverse industrial clients.

Based in Malvern, PA, Applied Energy Systems Inc. specializes in high and ultra-high purity process piping. They design and deliver gas and liquid delivery systems for diverse industrial environments, including UHP cleanrooms and weather-exposed operations. Their comprehensive solutions ensure superior system performance.

Based in Hamilton, NJ, Armistead Mechanical, Inc. is a full-service mechanical contractor specializing in industrial and process piping, prefabrication, installation, and high-purity orbital welding. With over a century of experience, they serve commercial and industrial clients across the New York/New Jersey area.

Gibsonville, NC

Based in Gibsonville, NC, Byers Industrial Services offers nationwide turnkey industrial solutions, specializing in precision-focused mechanical work and water piping integration. They provide sanitary installations for food-grade and pharma-grade environments, serving industrial manufacturing and food & beverage sectors.

Dixon, CA

Based in Dixon, CA, California Pipe Fabricators, Inc. specializes in custom pipe fabrication services. They manage projects from bid and design through in-shop fabrication and delivery to the customer's project location, emphasizing quality and reliable performance.

Wichita, KS

Based in Wichita, KS, Central Consolidated, Inc. delivers mechanical, insulation, and custom fabrication services to commercial and industrial customers in Kansas and Northern Oklahoma. They specialize in process piping, plumbing, HVAC, and custom metal fabrication, leveraging engineering and design-build innovations for comprehensive solutions.

Edgar, WI

De Jong Consulting LLC provides installation and consultation services for sanitary process piping, specializing in the food and beverage industry. They also offer sanitary plant design, equipment sourcing, process consulting, and project management for food processing facilities.

Dennis Group provides comprehensive architectural design, engineering, and construction services for the food and beverage industry. Operating across the United States, Canada, and Brazil, they assist food manufacturers with projects ranging from feasibility studies to large-scale greenfield developments, inherently encompassing complex process piping systems for production.

Minooka, IL

Based in Minooka, IL, DePue Mechanical is a full-service mechanical contractor. They specialize in industrial process and utility piping, offering ASME-certified welding and prefab solutions for food, chemical, and power facilities. Additional services include boiler installation, skid fabrication, and virtual design & construction for industrial projects.

Edmond, OK

Based in Edmond, OK, Elite Piping Contractors, Inc. specializes in new construction commercial plumbing, hydronic, and utility piping for commercial, industrial, residential, and government clients throughout Oklahoma. They handle diverse piping needs, including medical gas and underground gas systems, leveraging over 40 years of experience.

Jacksonville, FL

Based in Jacksonville, Florida, Florida Fabworks LLC is an industrial general contractor specializing in process piping, mechanical, and structural fabrication services. They provide precise, code-compliant piping solutions for diverse industries like chemical, food, and power generation, utilizing skilled pipefitters and welders.

Orange County, CA

Based in Orange County, CA, Foss General Contractors provides industrial construction services. Their experienced team assists with diverse process piping needs, developing custom solutions for various industries. The company operates across California and Nevada, focusing on integrity and quality results for every project.

Van Buren, AR

Based in Van Buren, AR, Fowlkes Pipeline, Inc. is a 5th generation, family-owned contractor. They specialize in the construction and maintenance of natural gas pipelines, offering services like 2″-24″ steel and plastic pipe installation, repair, station compressor work, gas distribution, directional drilling, and hydro testing.

Herman Goldner Co., Inc. specializes in high-purity process piping design, fabrication, and installation for pharmaceutical, biotech, semiconductor, and food industries. As a full-service mechanical and plumbing provider, they offer tailored solutions across Pennsylvania, New Jersey, and Delaware. The company delivers quality craftsmanship and cost-effective services.

Kent, WA

Based in Kent, WA, Hermanson Company is a mechanical systems construction provider specializing in pipe-fitting, plumbing, and HVAC sheet metal. They offer design, fabrication, and installation services for a range of projects, from complex new constructions and renovations to retrofits and tenant improvements, serving commercial and industrial clients.

Manassas, VA

High Purity Systems, Inc., based in Manassas, VA, specializes in process piping installation, orbital welding, and custom fabrication. They support critical piping needs for maintenance, operations, and new construction, utilizing materials from stainless steel to Hastelloy®. The company serves diverse industries including aerospace, pharmaceutical, microelectronics, and water treatment.

HMH Contractors, Inc. specializes in high-precision piping and welding solutions for industrial clients. They deliver comprehensive process piping services tailored for the pharmaceutical and food processing industries, ensuring quality and compliance. Their expertise supports demanding applications in critical sectors.

Rancho Cordova, CA

Based in Rancho Cordova, CA, HMI Industrial Contractors, Inc. is a woman-owned mechanical contractor specializing in comprehensive piping and tank repairs, retrofits, and installations. They serve the food and beverage and processing industries, also offering packaging systems, conveyor services, machinery installation, and industrial laser cutting.

Chicago, IL

HorVer Gas Piping & Repair, based in Chicago, IL, specializes in expert gas line installations, pressure testing, and leak repair services. They serve residential, commercial, and industrial clients, ensuring safe, code-compliant, and durable gas piping systems.

Houston, TX

Based in Houston, TX, HP Piping specializes in providing fabrication and service solutions for the upstream, midstream, and downstream oil and gas sectors. The company offers expertise in process piping and pressure control systems, serving industrial clients with comprehensive piping needs from its Texas facilities.

Pueblo, CO

Industrial Constructors/Managers, Inc. (ICM) is a process piping contractor with over 40 years of experience, operating out of facilities in Colorado. They specialize in pipe fabrication, AISC certified structural steel erection, and millwright services. ICM is known for its high-quality work and strong safety culture.

Tulsa, OK

Based in Tulsa, OK, Industrial Piping Companies LLC is a specialty welding and mechanical contractor. They provide fabrication and field installation of B31.3 process and power piping, coils, and transfer line assemblies. They serve the Chemical, Petrochemical, Refinery, Energy, and Process Heater markets.

Jacksonville, FL

Based in Jacksonville, FL, J2B Industrial provides engineered solutions for industrial welding and fabrication. They specialize in high-quality manufactured skids, modular welding systems, and expert pipe fabrication. The company also offers steel fabrication and erection services, committed to precision engineering and tailored solutions.

Ridgefield, WA

Based in Ridgefield, WA, JH Kelly is a self-performing, multi-trade general contractor focused on industrial construction. They operate extensive pipe fabrication facilities and utilize in-house piping designers and detailers. Specializing in complex, multi-craft projects, JH Kelly provides mechanical, electrical, and plumbing services to various industrial clients.

Indianapolis, IN

Based in Indianapolis, IN, Maddox Industrial Group provides turnkey industrial process piping installation, maintenance, and repair. They specialize in services for pharmaceutical, air separation, cryogenic, and water/wastewater treatment plants. MIG is an NBIC “R” Stamped provider for process piping, vessels, and equipment.

Colorado Springs, CO

Based in Colorado Springs, CO, Murphy Company provides process piping services. This mechanical contracting firm has over 100 years of experience, specializing in HVAC, plumbing, high purity, and refrigeration. They utilize state-of-the-art fabrication facilities for mechanical system installation and prefabrication projects.

Based in Gloucester, MA, Northeast Process Systems Inc. (NEPSI) is a licensed process piping contractor with over 50 years of experience. They specialize in complex piping systems for FDA-regulated manufacturing facilities. NEPSI serves the food & beverage, chemical, breweries, distilleries, and personal care product industries in Massachusetts and Connecticut.

Wall Township, NJ

Northeast Remsco Construction, a New Jersey-based contractor, specializes in heavy civil, treatment plant, infrastructure, and underground utility projects in the Mid-Atlantic and Northeast US. They self-perform piping installation as a core part of their treatment plant construction services, alongside excavation, concrete, and mechanical equipment work.

Lemoore, CA

Northland Process Piping specializes in comprehensive process piping solutions, including stainless steel fabrication, design, engineering, and field installation services. Based in Lemoore, CA, the company provides expert services for industrial and commercial clients, ensuring high-quality, precise installation and system integration.

Osage Piping & Fabricating, Inc. provides comprehensive piping and fabricating services. Located in Highspire, PA, the company specializes in industrial piping solutions, serving various sectors. With expertise in custom fabrication, they deliver reliable and efficient process piping systems for their commercial and industrial clients.

Based in Topeka, KS, PCI Mechanical directly provides process piping contracting services. Their skilled pipefitters, welders, and HVAC technicians specialize in industrial and commercial projects. They deliver comprehensive mechanical and piping solutions aimed at minimizing client downtime for diverse industries.

Fayetteville, GA

Based in Fayetteville, GA, Peachtree Mechanical Inc. offers comprehensive mechanical construction services with over 40 years of experience. They specialize in critical environments, including labs, pharmaceuticals, hospitals, data centers, and manufacturing facilities, providing preconstruction planning, general, and specialized construction solutions.

Sacramento, CA

Based in Sacramento, CA, Performance Mechanical, Inc. is a Building Trades Union Contractor specializing in industrial and commercial construction. They provide comprehensive process and utility piping services for applications like ammonia, chemical processes, food grade systems, compressed air, steam, and water solutions.

Wichita, KS

Based in Wichita, Kansas, Piping & Equipment Constructors provides project execution services for heavy industry. They specialize in capital projects and facilities maintenance, delivering safe, reliable solutions with a commitment to client satisfaction and safety, which includes process piping. Founded in 1946.

Loomis, CA

Based in Loomis, CA, Placer Process Systems provides advanced process piping, mechanical, utility, and hygienic solutions. Specializing in next-generation systems, the company serves the food and beverage, biotechnology, and pharmaceutical industries. They deliver robust and precise infrastructure, including comprehensive system integration and custom skid solutions for industrial operations.

Wichita, KS

Professional Mechanical Contractors, Inc. is a mechanical contracting company based in Wichita, KS. They offer comprehensive services for commercial and industrial clients throughout the Wichita area, including specialized process piping installations, maintenance, and related mechanical systems. The company focuses on delivering professional solutions.

Power Process Piping, Inc. (PPP) is a fabricator and installer of piping systems, offering high-quality materials and cost-effective solutions. The company serves diverse industries including automotive, heavy industrial, petrochemical, power generation, food, and pharmaceutical facilities with advanced piping technology.

Based in Oley, PA, Precision Piping & Mechanical, LLC provides process and utility piping, equipment installation, and facility maintenance services. They offer quality craftsmanship, reliable service, and competitive pricing to customers of all sizes throughout the Mid-Atlantic region and beyond, focusing on safety and attention to detail.

Covington, GA

Process Equipment & Controls (PEC) specializes in fabricating, installing, maintaining, and replacing process piping systems. Their team of experts ensures quick and efficient service for various industrial and commercial applications. Based in Covington, GA, PEC provides comprehensive solutions for clients seeking reliable process equipment and control services.

Hillsobro, OR

Based in Vancouver, WA, Process Piping Fabrication, LLC. provides design, build, engineering, and sustaining fabrication services. They specialize in process piping solutions for semiconductor, data center, food processing, and chemical manufacturing industries. The company holds Oregon CCB and Boiler Business WCL licenses, ensuring compliant project delivery.

Spring Hill, FL

Professional Process Piping LLC provides process piping services, offering an end-to-end client experience that includes budgeting, staffing, and on-site organization. The company brings 28 years of experience in dairy, sugar, and various food-grade plants, focusing on quality work and transparent communication for commercial contractors.

Memphis, TN

Process Systems Inc Construction, based in Memphis, TN, specializes in process and utility piping installation. The company also provides structural and miscellaneous steel fabrication/erection, mechanical equipment installation, and concrete foundations. Licensed across approximately 25 states, they self-perform a significant portion of their direct-hire work.

Sanford, FL

Based in Sanford, FL, Quality Fabrication & Supply, Inc. provides high-quality piping fabrication for mechanical and fire protection industries. They offer precision cutting, welding, grooving, and bundling services for steel piping components. With extensive warehousing, they serve as a comprehensive fabrication and supply solution for contractors.

Harrison, OH

Rodem Inc. provides comprehensive process solutions for the sanitary processing industry. Their engineering and fabrication experts develop customized systems, alongside offering an extensive webstore for OEM products, parts, and replacement equipment. They specialize in tailoring solutions to specific sanitary application requirements.

Plymouth, WI

Based in Plymouth, WI, Rohde Brothers, Inc. is an industrial mechanical contractor specializing in complex piping and engineered services. They design, install, and maintain critical process piping systems for manufacturing facilities, offering value engineering, fabrication, and 24/7 service.

Reserve, LA

Based in Reserve, LA, River Parish Contractors specializes in industrial pipe fabrication and construction solutions. They provide comprehensive services including shop and structural steel fabrication, along with turnaround services for diverse industrial projects. The company focuses on delivering robust fabrication capabilities to meet unique project requirements.

Based in Lititz, PA, Sanitary Process Systems, Inc. specializes in process piping and stainless steel fabrication. With expertise spanning since 1986, they provide superior service to industrial customers, focusing on quality and safety in sanitary environments.

Los Angeles, CA

Superior Pipe Fabricators Inc., based in Los Angeles, CA, offers comprehensive welding and specialty fabrication services. They handle standard to complex projects, ensuring adherence to major codes and procedures. Services include in-house and third-party NDE testing, heat treating, coating, lining, galvanizing, pickling, passivating, and epoxy bonding for various industrial needs.

Arlington, TX

Based in Arlington, TX, Talon Industries, Inc. specializes as a fuel piping contractor. The company provides comprehensive piping services to the aviation fueling and oil & gas sectors, leveraging over two decades of industry experience since 1997.

The Shaw Group provides comprehensive pipe fabrication and module fabrication services. They offer in-house engineering, design, and procurement for full project execution. Serving diverse industrial clients in sectors like chemicals, oil & gas, and renewable fuels, they utilize extensive US and global fabrication capacity for complex projects.

Addison, IL

Based in Addison, IL, Twin Piping Company specializes in sanitary process piping and stainless steel fabrication. They serve the pharmaceutical, personal care, and food industries, offering new construction, expansion, repair, and maintenance services. The company is based in the Chicagoland area and serves customers nationwide.

Olivehurst, CA

Based in Olivehurst, CA, U.S. Pipe Fabrication specializes in custom and industrial pipe fabrication services. They provide skid, module, and structural steel fabrication for diverse sectors including power, chemical, oil & gas, and water treatment. With over 40 years of experience, the company serves industrial clients.

Houston, TX

Based in Houston, TX, U.S. Pipeline specializes in constructing energy infrastructure across North America. The company builds mainline pipelines, facilities, and complex piping projects, including large-diameter pipe installations. They provide project management, maintenance, integrity, and modernization services for energy transport systems.

Cincinnati, OH

Based in Cincinnati, OH, Integrated Water Process provides comprehensive water engineering and management. They specialize in designing and installing large-scale hydroponic, irrigation, and indoor water systems. Their expertise includes water storage, filtration, pumping, and reclamation for commercial and industrial clients, inherently offering process piping contracting.

Walterboro, SC

Based in Walterboro, SC, Wayne Brothers provides integrated industrial piping solutions as a design-build specialty contractor. They specialize in process and utility piping design, fabrication, and installation services, employing certified welders. The company handles multi-scope industrial projects with four decades of experience.

Rydal, GA

Based in Rydal, GA, Industrial Construction Services, Inc. offers comprehensive industrial mechanical construction. The company specializes in process piping, providing expert fabrication, installation, and maintenance for diverse industrial applications. They focus on quality, efficiency, and integrity for their industrial clients.

Ruffin, SC

Based in Ruffin, SC, Process Piping & Welding LLC specializes in providing comprehensive process piping contractor services. The company offers expert welding, fabrication, and installation solutions for industrial and commercial applications, ensuring robust and reliable piping systems.

Brea, CA

West Coast Piping Services, Inc. is a full-service mechanical contractor based in Brea, CA, specializing in process piping for diverse industrial clients. They offer design-build, installation, and maintenance, including orbital welding, utility piping, and structural steel fabrication. Industries served include food & beverage, pharmaceutical, chemical, and semiconductor.

Long Beach, CA

Based in Long Beach, CA, Advance Mechanical Contractors has provided industrial, commercial, and residential contracting and plumbing services since 1923. Specializing in complex mechanical systems for oil and refinery companies, they also serve schools, hospitals, and prisons as experienced union contractors.

Amarillo, TX

Based in Amarillo, TX, Anzco Industrial, LLC provides specialized mechanical, electrical, and civil construction and plant maintenance solutions. They specialize in the design and fabrication of industrial, food-grade, and sanitary process piping systems. The company also offers custom metal fabrication and millwright services for commercial and industrial clients.

Binsky is a mechanical contractor serving New Jersey and Eastern Pennsylvania with 80 years of experience. The company delivers high-quality workmanship for large commercial projects, specializing in HVAC, plumbing, and fabrication. Services include modular construction, field construction, and preventative maintenance for complex mechanical systems.

Indianapolis, IN

BMWC Constructors specializes in high-purity piping fabrication and installation for complex industrial projects. They maintain a robust quality management system adhering to Bioprocessing Equipment Standards (BPE). Serving markets like Life Sciences, Semiconductor, Chemical, Oil & Gas, and Aerospace, BMWC delivers expert construction execution.

Waterford, NY

Based in Waterford, NY, BPI Piping, Inc. is a mechanical contractor with over 39 years experience. They specialize in high purity piping, plumbing, and complex mechanical system installations, offering turn-key and design-build capabilities. Serving pharmaceutical, chemical, and research industries, they provide clean room certified services.

Compton, CA

Cal Piping Industrial, based in Compton, CA, specializes in industrial pipe manufacturing and fabrication services. They provide comprehensive solutions including pipe spool fabrication, specialty welding, post weld heat treatment (PWHT), and sandblasting & coating for various industrial applications.

Little Rock, AR

Based in Little Rock, AR, Systems Contracting is a self-performing contractor experienced in working with diverse piping materials, including aluminum, carbon steel, and concrete-lined pipe. They offer comprehensive construction and maintenance services, supported by in-house engineering and drafting for various industries worldwide.

C&R Mechanical Company operates a full-service pipe fabrication facility, specializing in industrial piping services. As a union shop, they comply with the United Association Piping Fabrication Agreement, offering comprehensive pipe fabrication and related mechanical services to commercial and industrial clients. They focus on quality and adherence to industry standards.

Irving, TX

Based in Irving, TX, Driver Pipeline Co. Inc. provides natural gas and oil pipeline construction, integrity, and maintenance services. They specialize in building compressor, meter, pump, and regulator stations, involving significant process piping for critical energy infrastructure across the United States.

Northbrook, IL

F.E. Moran Industrial Piping is a direct provider of industrial piping solutions, specializing in the fabrication, installation, and maintenance of complex pipe systems for various industrial applications. As a division of F.E. Moran, they offer comprehensive mechanical services including HVAC, plumbing, fire protection, and refrigeration, serving commercial and industrial clients across the United States.

Four Square Industrial Contractors, based in Petersburg, VA, specializes in comprehensive process piping solutions. They provide services including food-grade stainless steel piping, hydraulic and lubrication system installations, piping demolition, and repairs. The company also handles component installation and replacements for industrial clients.

Valdosta, GA

Based in Valdosta, GA, Georgia Pipe & Metal Fabricators, Inc. specializes in industrial and agricultural construction. They provide metal fabrication, stainless steel and carbon steel piping, and install process and blow pipe. With over 40 years of experience, the company holds ASME U and R stamps for pressure vessels.

Granite City, IL

Based in Granite City, IL, icon Mechanical delivers comprehensive mechanical and plumbing construction services, including fabricated pipe, process skids, and CIP systems. They offer design-build solutions for diverse industries such as Data Centers, Healthcare, Pharma, Automotive, and Laboratories, ensuring high-quality project execution.

Earth City, MO

Charles E. Jarrell Contracting Company, Inc., based in Earth City, MO, offers comprehensive mechanical contracting with expertise in complex process piping solutions. They provide design, engineering, and construction services, utilizing prefab shops and value engineering to deliver efficient, customized piping systems for industrial and commercial clients.

Fond Du Lac, WI

Based in Fond du Lac, Wisconsin, J. F. Ahern Co. fabricates industrial process piping and components tailored for various facilities. They ensure all piping and components are code-compliant, offering direct services for industrial process piping needs.

Fort Worth, TX

Lochridge-Priest Inc. provides fully coordinated mechanical, electrical, and plumbing solutions for complex commercial and industrial projects across Texas. They offer new construction, system modernization, and strategic renovations, specializing in HVAC, electrical, plumbing, and refrigeration systems, including fabrication capabilities.

Coral Gables, FL

MasTec, Inc. provides comprehensive construction services specializing in oil and natural gas pipelines and transmission systems, spanning from wellhead to end user. They also deliver construction and EPC services for energy transition projects, including renewable fuels, carbon capture, and hydrogen infrastructure.

Tulsa, OK

Based in Tulsa, OK, McIntosh Corporation is a mechanical service provider specializing in design-build projects. They offer comprehensive services including industrial/process piping, HVAC, plumbing, and fabrication. Founded in 1957, the company delivers coordinated project completion for commercial mechanical systems.

Atlanta, GA

Based in Atlanta, GA, McKenney's, Inc. is a commercial mechanical contractor providing process piping, HVAC, plumbing, and building automation services. They offer in-house engineering, fabrication, and installation for new construction and existing facilities. McKenney's serves diverse markets such as healthcare, industrial plants, and commercial offices.

Mechanical Specialties Contractors, Inc. specializes in fabricating and installing high-purity and process piping systems. The company provides high-performance solutions for clients requiring efficient, reliable piping. Their proven fabrication methodology meets anti-corrosion goals and ensures optimum purity for critical production processes.

Enumclaw, WA

NIPR Fabrication, based in Enumclaw, WA, specializes in sanitary tubing and process piping systems. They offer in-house fabrication, orbital welding, skid fabrication, and equipment installation. Serving the food, beverage, dairy, biotech, and pharmaceutical sectors, NIPR provides complete project solutions from design to installation.

Based in Canton, MA, Beacon Piping Co Inc specializes in process and utility piping as a mechanical contractor. They offer design-build, prefabrication, installation, and maintenance services for complex industrial and high-tech manufacturing plants. Serving life sciences, semiconductor, food & beverage, and pharmaceutical industries, Beacon Piping delivers custom piping solutions.

Warrenville, SC

Palmetto Pipe & Fab LLC, based in Warrenville, SC, provides process piping, specialty welding, and plant maintenance services. They offer pipe and structural fabrication from both their shop and mobile units. The company ensures flexibility for industrial clients, also handling machining and heavy equipment repair.

Middlesex, NJ

Based in Middlesex, NJ, PIM Corporation offers complete mechanical construction services, specializing in industrial and commercial process piping. They provide design-build solutions for HVAC and plumbing systems, including hydronic, medical gas, and utility piping. The company serves a diverse range of industrial and commercial clients.

Pipers Mechanical provides process piping contractor services with over a decade of experience. Specializing in sanitary and high purity systems, the company serves clients across Wisconsin and the broader Midwest region. They focus on delivering quality installations and comprehensive solutions for complex piping needs.

Piping Systems, Inc. provides shop fabricated piping services to customers across the continental United States and Canada. The company specializes in delivering high-quality, pre-engineered piping solutions for various industrial and commercial applications, ensuring precision and reliability.

Baldwin Park, CA

Murray Company Mechanical Contractors, based in Baldwin Park, CA, offers comprehensive mechanical construction services, specializing in expert process piping. They handle complex industrial and commercial projects, serving biotech, pharmaceutical, food & beverage, and semiconductor industries. Leveraging advanced in-house fabrication facilities, they deliver high-quality, customized piping systems.

Dripping Springs, TX

Precision Metal Services, based in Dripping Springs, TX, offers high-pressure pipe welding and ASME-grade vessel fabrication for oil & gas, chemical, power, and water facilities. They provide comprehensive welding solutions, including structural steel, mobile repairs, and custom fabrication for industrial clients across Central Texas.

Cincinnati, OH

Based in Cincinnati, OH, PCI Services is a mechanical contracting business specializing in commercial and industrial piping, HVAC, and fabricated mechanical skids. They provide custom piping installation and modular skid systems for diverse process industries like food & beverage, chemical, pharmaceutical, and oil & gas.

Laguna Niguel, CA

Process Construction Services, based in Laguna Niguel, CA, is a full-service mechanical and process piping contractor. They provide turnkey design, engineering, construction, and maintenance for industrial process facilities. The company serves diverse sectors including food & beverage, water treatment, chemical, aerospace, and pharmaceutical clients.

Based in Manheim, PA, Process Piping Solutions LLC specializes in sanitary piping and custom fabrication services. The company provides comprehensive solutions for industrial and commercial clients, prioritizing quality, efficiency, and safety for all process piping needs. They also offer 24-hour emergency service.

Southern Industrial Constructors, Inc. provides comprehensive industrial construction and plant maintenance services for manufacturing and process industries. They specialize in fabricating, installing, repairing, and modifying industrial, utility, and high-purity piping systems. With over six decades of experience, the company delivers turnkey solutions to clients across the Southeast and beyond.

Salt Lake City, UT

Sundt Construction is a general contractor specializing in critical infrastructure, including water and wastewater treatment, power, and heavy industrial facilities. The company provides comprehensive construction services that involve extensive process piping for complex industrial and utility projects. Sundt leverages decades of experience across the United States.

Fort Worth, TX

Based in Fort Worth, TX, Superior Pipeline Services (SPS) provides world-class utility infrastructure services. They specialize in natural gas distribution, new construction, maintenance, and emergency repairs for oil and energy companies in the Greater Dallas-Fort Worth region. SPS delivers reliable, end-to-end infrastructure solutions.

TDIndustries is a mechanical construction and facilities services company specializing in innovative process piping, cleanroom construction, and FARS solutions. They provide comprehensive services from design to ongoing maintenance for building systems, supporting industries such as life sciences, biotech, and industrial clients.

Sioux City, IA

Based in Sioux City, IA, Thompson Solutions Group is an industrial electrical and mechanical contractor. They provide turnkey industrial piping solutions with in-house mechanical engineers, delivering innovative and sustainable custom solutions. Focused on quality, efficiency, and safety for Midwest businesses, the company leverages over 90 years of experience.

Baton Rouge, LA

Based in Baton Rouge, LA, Turner Industries specializes in industrial process piping, offering expert pipe fabrication and bending services. They provide comprehensive turnkey industrial solutions, including construction, maintenance, and modular fabrication for vital sectors like fuel, energy, and materials production.

Wichita, KS

Based in Wichita, KS, UCI provides comprehensive civil and mechanical construction services for maintenance and capital projects. The company self-performs critical path activities, offering turnkey solutions with exceptional quality. UCI emphasizes predictable performance and attention to detail, covering services highly relevant to process piping contractors.

Vega Baja, PR

Based in Vega Baja, PR, UltraPure Systems, Inc. is a full-service process and mechanical contractor and fabricator. The company specializes in high-purity process, water, chemical, and gas piping systems. They provide sanitary and industrial process piping, modular and skidded systems for the life sciences industry.

Cleves, OH

Based in Cleves, OH, W&W Custom Fabrication Co. Inc. provides custom stainless steel fabrication for the food industry, specializing in process piping. Since 1994, they also manufacture tanks, sheet metal, conveyors, and structural pieces. They work with stainless steel, carbon steel, and aluminum, offering design, fabrication, and installation services.

Stanton, CA

Based in Stanton, CA, Custom Pipe & Fabrication Inc. builds precision-engineered pipe components and systems. They specialize in ductile iron and steel pipe fabrication, fittings, and coatings for pump and waterworks solutions, including water extraction, transport, and distribution applications.

Marietta, GA

Garrett Mechanical Services, based in Marietta, GA, offers comprehensive mechanical solutions for industrial and commercial facilities. Specializing in process piping, they provide design, fabrication, installation, and maintenance services. Their expertise covers systems for chilled water, steam, compressed air, and specialized gas, ensuring reliable operation of critical industrial processes.

Wichita, KS

Based in Wichita, Kansas, MSI specializes in industrial piping fabrication and installation services. They provide comprehensive mechanical systems, structural steel, and process piping solutions. MSI serves diverse sectors including chemical, power, refining, and food processing, utilizing various materials like carbon steel and alloys.

Kaukauna, WI

Based in Kaukauna, WI, Piping Service, Inc. specializes in pipe installation, fabrication, and mechanical contracting. They offer in-house design for cost-effective piping fabrications, backed by AWS-certified GMAW and GTAW welding expertise. The company provides complete custom manufacturing solutions, including waterjet cutting, and post-installation service.

Walnut, CA

Based in Walnut, CA, Scorpion Process Piping specializes in comprehensive design, fabrication, installation, and maintenance for industrial, sanitary, and utility piping systems. Services include skid fabrication, custom fabrication, and orbital welding. The company serves diverse sectors such as food & beverage, pharmaceutical, chemical, and biotech industries.

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How to Choose a Company

  • Verify their Welding Procedure Specifications (WPS) and Procedure Qualification Records (PQR) are current and align with your project's material grades (e.g., carbon steel, 316L stainless, duplex alloys) and required joint types.
  • Confirm their adherence to the specific ASME B31 code governing your application (e.g., B31.1 for power piping, B31.3 for process piping, B31.9 for building services) and ask for examples of compliant installations.
  • For high-purity or critical systems, scrutinize their protocols for material segregation, contamination control, and comprehensive material traceability (Mill Test Reports - MTRs) from receiving to installation.
  • Evaluate their in-house or outsourced Nondestructive Examination (NDE) capabilities (e.g., radiography, ultrasonic testing, liquid penetrant testing) and their experience with hydrostatic or pneumatic testing to specified design pressures.
  • Inquire about their experience with complex brownfield tie-ins to existing live process systems, specifically how they manage permits, process shutdowns, and minimize operational disruption.
  • If your project demands cleanroom environments (e.g., semiconductor, pharmaceutical), require proof of successful installations under ISO 14644 standards, including specialized tooling, gowning procedures, and particle count management.
  • Red Flag Warning: Be cautious of contractors who cannot provide recent examples of projects with similar complexity or material requirements, or those who lack comprehensive project insurance, especially pollution liability for certain chemical processes.

Frequently Asked Questions

What's the difference between ASME B31.1 and B31.3 piping, and which code applies to my project?

ASME B31.1 is the code for Power Piping, primarily covering steam, water, and boiler external piping in power generation facilities. ASME B31.3 is the code for Process Piping, used in chemical plants, refineries, pharmaceutical facilities, and other processing plants for a wide range of fluids. The applicable code depends on your industry and the specific service conditions of the fluid being transported.

How critical is it for my process piping contractor to have orbital welding capabilities?

Orbital welding is critical for applications demanding extremely high-purity, consistent weld quality, and minimal human error, such as in semiconductor manufacturing, pharmaceutical sterile processes, or food & beverage lines where crevice-free interiors are paramount to prevent bacterial growth. If your process requires consistent ID (inner diameter) welds, high corrosion resistance, or validates to strict cleanliness standards, orbital welding is often a non-negotiable requirement.

What documentation should I expect for material traceability and welding quality on my project?

You should expect comprehensive documentation, including Mill Test Reports (MTRs) for all pipe and fitting materials, confirming their chemical and mechanical properties. For welding, expect documented Welding Procedure Specifications (WPS) outlining parameters for each weld type, Procedure Qualification Records (PQR) proving the WPS is sound, and Welder Performance Qualifications (WPQ) verifying individual welders are certified to perform those procedures.

What are the key considerations for selecting a contractor for high-purity process piping versus heavy industrial applications?

For high-purity, focus on contractors with extensive cleanroom experience (ISO 14644), expertise in materials like 316L stainless or exotic alloys, specialized welding techniques (e.g., orbital welding), and stringent contamination control protocols. For heavy industrial, prioritize contractors with experience in large-bore piping, higher pressure/temperature ratings, diverse material capabilities (carbon steel, chrome-moly), strong safety records for complex site work, and robust NDE capabilities for structural integrity.

What kind of pre-construction data or engineering packages do process piping contractors typically require for an accurate bid?

Contractors need detailed Piping and Instrumentation Diagrams (P&IDs) outlining the system's components and flow, Isometric drawings (isos) showing pipe routing and dimensions, material specifications (pipe schedules, fitting types, valve data), process conditions (pressure, temperature, fluid type), required testing protocols, and a clear scope of work including site logistics and schedule constraints.

What does hydrostatic testing involve, and is it always necessary for process piping systems?

Hydrostatic testing involves filling a completed section of piping with water (or another non-compressible liquid) and pressurizing it to a specified level, usually 1.5 times the design pressure, to check for leaks and confirm the system's structural integrity. While not always legally mandated for every low-pressure system, it is almost universally recommended and often required by codes like ASME B31.3 for process piping, as it's a critical safety and quality assurance step to prevent costly failures once the system is operational.

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