Want to email decision-makers? Need a specific city or state?

Find your next customers, fetch contacts, and send outreach — all in one place.

Try Free Search

Piping Contractors

Last updated: March 2026

This directory lists 98 piping contractors across the United States, from small, specialized industrial maintenance firms to large-scale EPC contractors handling major capital projects.

Buyers engage piping contractors to address challenges ranging from plant expansions and retrofits to emergency repairs and routine preventative maintenance. Key issues often involve ensuring precise fit-up, managing complex routing in brownfield sites, adhering to stringent NDT requirements, and achieving critical path milestones without compromising safety or quality, especially for systems requiring API 1104 compliance.

The market for piping contractors is diverse. You'll find general industrial mechanical contractors, highly specialized high-purity piping firms for semiconductor or pharmaceutical facilities, pressure vessel fabricators with piping capabilities, and even niche providers focused solely on pipeline integrity or intricate orbital welding applications for advanced materials. Their distinctions often lie in their labor pool's specific craft certifications, typical project size, and their in-house engineering and fabrication capabilities.

To effectively engage, buyers should arrive with detailed P&IDs, isometric drawings, material specifications, and a clear scope of work including specific code compliance (e.g., ASME B31.3), testing requirements (e.g., hydrostatic testing parameters), and any unique inspection hold points. Contractors, in turn, expect a comprehensive bid package to accurately assess resource loading, project schedule, and potential constructability challenges.

98 companies·56 emails·88 phones

Want premium placement for your company?

Get featured at the top of this directory

Advertise with us

Company Directory

98 companies nationwide

Redding, CA

Based in Redding, CA, Precision Piping Redding Plumbing Services delivers top-tier residential plumbing solutions. Their highly skilled team offers comprehensive services, including 24/7 emergency support and specialized drain cleaning. Dedicated to precision and customer satisfaction, they handle all plumbing requirements with expertise.

Oakland, CA

Based in Oakland, CA, Broadway Mechanical-Contractors, Inc. provides comprehensive mechanical solutions, specializing in large-scale design-build projects. Offering in-house engineering, detailing, and fabrication, they expertly install plumbing, HVAC, and sheet metal systems. The company directly performs complex piping and mechanical work for commercial and industrial clients.

Waldwick, NJ

BRUTE Contracting is a New Jersey-based water main and sewer contractor. The company provides installation, repair, and maintenance services for water and sewer lines, serving both residential and commercial clients. They handle underground sewer and water infrastructure projects with a focus on efficient solutions and functionality.

Kernersville, NC

Carolina Process Piping Inc., based in Kernersville, NC, designs, fabricates, and installs custom process and industrial piping systems. They provide high purity and utility piping for sanitary, pharmaceutical, biotech, food, beverage, and chemical industries. Offering both shop and on-site capabilities, the company brings 30 years of experience.

Wichita, KS

Based in Wichita, KS, Central Consolidated, Inc. provides comprehensive mechanical, custom fabrication, and fire protection services for commercial and industrial customers. Their expertise includes piping, process piping, HVAC, boiler/chiller repairs, and tank fabrication. They serve clients across Kansas and Northern Oklahoma with experienced staff and design-build innovations.

Wichita, KS

Based in Wichita, KS, CM3, Inc. provides mechanical contracting services, specializing in plumbing, heating, and air conditioning systems. With over 30 years of experience, the company serves commercial construction markets including hospitals, office buildings, and educational institutions in South Central Kansas.

Gilbert, AZ

Based in Gilbert, AZ, Crawford Mechanical Services is a mechanical and plumbing contractor serving commercial and industrial clients across Arizona. They provide comprehensive services, including ground-up construction, specialized projects, and maintenance, with in-house fabrication capabilities. The company delivers precision and innovation for complex needs.

Seattle, WA

Based in Seattle, WA, Complete Trenchless Inc. offers advanced trenchless solutions for underground utility infrastructure. Specializing in pipe bursting, CIPP lining, and directional drilling for water, sewer, and other lines, they provide efficient, less disruptive pipe repair and replacement services that minimize excavation.

Woodland, CA

Based in Woodland, CA, Elite Fire Protection Woodland offers comprehensive fire protection services. They specialize in the design, installation, and maintenance of fire sprinkler systems, involving extensive piping contractor work. The company also provides fire alarm systems, extinguishers, and testing services for commercial and industrial clients.

Stockton, CA

Based in Stockton, CA, Precision Fire Sprinkler Systems Stockton provides comprehensive fire sprinkler installation and maintenance services. The company specializes in designing, installing, inspecting, and repairing fire suppression systems for residential and commercial clients, ensuring adherence to safety standards and local building codes.

Stockton, CA

Based in Stockton, CA, Haley Contracting specializes in industrial and commercial plumbing and underground piping services. They provide complete project plumbing and underground systems, handling all aspects from evaluation to installation for diverse sectors including schools, banks, medical offices, and manufacturing plants.

Manassas, VA

Based in Manassas, VA, High Purity Systems, Inc. specializes in orbital welding, custom fabrication, and process piping installation. They support maintenance, operations, and construction piping needs, working with materials from stainless to Hastelloy®. Serving diverse industries such as aerospace, pharmaceutical, water treatment, and microelectronics.

Peoria, IL

Based in Peoria, IL, Illinois Piping Corporation is a mechanical contractor offering fabrication, installation, and repair of mechanical systems. Their services encompass process, HVAC, and utility piping, equipment setting, and boiler and tank erection. They also provide shop fabrication and ASME repairs for pressure vessels.

Tulsa, OK

Industrial Piping Companies LLC, based in Tulsa, OK, is a specialty welding and mechanical contractor. They provide fabrication, field installation, and emergency services for chemical, petrochemical, refinery, and energy markets. Specializing in B31.3 process and power piping, convection coiling, and radiant sections, the company operates a 65,000 sq ft fabrication facility.

Tampa, FL

Based in Tampa, FL, Iron First Pipelining directly provides comprehensive piping contractor services. The company specializes in pipelining solutions, including installation, repair, and maintenance for various industrial and commercial applications. They operate with their own facilities and workforce.

Sacramento, CA

Based in Sacramento, CA, Iron Mechanical Inc. is a commercial builder specializing in the plumbing and mechanical industry. They provide design-build and design-assist services, including prefabrication, complete installation, and preventative maintenance for mechanical systems. Their expertise extends to commercial, high-rise, multifamily, medical, and educational facilities.

Huntley, IL

Based in Huntley, IL, Maverick Process Piping specializes in the design, fabrication, installation, and maintenance of industrial process piping systems. They serve commercial and industrial clients, offering comprehensive solutions for various fluid and gas handling needs.

Based in Newtown, PA, M.J Shimp Mechanical Plumbing and Utility Services provides comprehensive plumbing and utility solutions for residential and commercial clients. With over 30 years of experience, they expertly handle minor repairs to major installations, using high-quality parts and equipment.

Brisbane, CA

Based in Brisbane, CA, MK Pipelines Inc. is a full-service pipeline contractor. They specialize in comprehensive construction, maintenance, and integrity services for pipelines, facilities, and infrastructure. Serving clients in the oil & gas, petrochemical, utilities, municipal, and industrial sectors across the Western United States.

Monroe, NC

Based in Monroe, NC, United Process Mechanical Piping Fabricators & Erectors, Inc. provides process pipe fabrication and erection services. They also specialize in comprehensive equipment rigging and machinery moving, delivering precise, efficient solutions for industrial machinery relocation. The company serves diverse industrial fabrication needs.

Tampa, FL

Murphy Pipeline Contractors is a trenchless utility contractor specializing in innovative pipeline rehabilitation technologies. They offer pipe bursting, sliplining, and CompressionFit HDPE pipe lining for water and force main replacement. Serving municipalities, engineering firms, and contractors, they manage large underground infrastructure projects throughout North America.

Little River, SC

Neptune Plumbing LLC is a licensed and insured plumbing company based in Little River, SC. They provide comprehensive residential and commercial plumbing services, including repiping, water heater repair and replacement, sewer line repair, and drain cleaning. The company specializes in maintaining and installing essential piping systems.

Roseville, CA

Based in Roseville, CA, Nor-Cal Pipeline Services is a full-service pipeline contractor. The company provides comprehensive integrity, repair, rehabilitation, and preventative maintenance for pipeline systems. Services include hot tapping, line stopping, composite wrap repairs, and corrosion remediation, serving oil & gas, water, wastewater, mining, and industrial sectors.

Irvine, CA

Based in Irvine, CA, OC Repipes provides whole-house repiping and plumbing services for South Orange County homeowners. They specialize in PEX and copper repiping, including HOA projects. The company also offers residential water filtration and water heater services, backed by a lifetime warranty on workmanship.

Morgan Hill, CA

Based in Morgan Hill, CA, Paragon Mechanical Inc. is a full-service mechanical contractor for the Bay Area. They specialize in HVAC, architectural sheet metal, and piping, offering expertise in complex process piping and traditional plumbing projects. The company provides custom manufacturing and 24/7 service.

Sacramento, CA

Based in Sacramento, CA, Performance Mechanical, Inc. is a Building Trades Union Contractor offering a single-source solution for industrial and commercial construction projects. The company manages a complete range of contractor services, ensuring efficient and on-schedule project completion for diverse client needs.

West Palm Beach, FL

Pipelining Technologies, Inc., based in West Palm Beach, FL, provides trenchless pipe lining services exclusively for commercial clients. The company serves industrial, apartment, condominium, cooperative, and marine properties across South Florida, including Palm Beach, Broward, Miami-Dade, Martin, and St. Lucie counties, offering advanced piping solutions.

Oakland, CA

Pipe Spy, Inc. is a licensed plumbing contractor based in Oakland, CA, specializing in trenchless sewer line repair and replacement. The company provides expert sewer lateral services for residential and commercial clients throughout the East Bay and San Francisco Bay Area, including Oakland, Berkeley, and Alameda.

Abilene, KS

Based in Abilene, KS, Pipes Utility Contractors LLC provides utility infrastructure solutions. They specialize in the installation, repair, and maintenance of transmission, distribution, and substation systems. Services include storm damage restoration, construction management, and inspection, delivering reliable utility infrastructure for various clients.

Wichita, KS

Based in Wichita, KS, Piping & Equipment Constructors provides project execution services for heavy industry. This ESOP company, founded in 1946, specializes in capital projects and facilities maintenance, delivering high-quality, client-focused solutions. Operating as a merit shop, they ensure reliable and safe service for industrial piping and equipment systems.

Miami, FL

Poole & Kent Co of Florida is a mechanical contractor specializing in comprehensive water and wastewater treatment plant projects. They undertake significant infrastructure upgrades, including filter system installations, design-build cogeneration facility improvements, and reverse osmosis plant expansions, serving municipal and industrial clients throughout Florida.

Livermore, CA

Platinum Pipeline specializes in constructing underground pipeline systems for public and private works projects. Based in Livermore, CA, the company undertakes infrastructure development, including culvert replacements, road widening, and storm drain improvements. Their project portfolio features diverse residential and municipal undertakings, demonstrating expertise in complex utility installations.

Tucson, AZ

Based in Tucson, AZ, Plumbologist provides comprehensive plumbing contracting services for residential and commercial clients. The company specializes in complete plumbing installation, repair, and maintenance. They emphasize safety, quality, and professionalism, aiming to exceed expectations from start to finish.

Fountain Valley, CA

Based in Fountain Valley, CA, Pan-Pacific Mechanical is a full-service mechanical design-build subcontractor. They provide mechanical and plumbing systems for hospitals, high-rises, and universities. Expertise extends to process work for pharmaceutical, aerospace, and semiconductor industries, ensuring timely completion and cost-efficiency.

Brentwood, CA

Based in Brentwood, CA, Precision Plumbing & Contracting offers quick and reliable plumbing services. The company specializes in both commercial and residential projects, addressing various plumbing problems for its clients. They provide comprehensive solutions, ensuring efficient and effective service for all piping needs.

Ruffin, SC

Based in Ruffin, SC, Process Piping and Welding LLC specializes in providing comprehensive process piping and welding services for industrial and commercial clients. The company offers expert fabrication, installation, and maintenance of various piping systems, ensuring high-quality and reliable solutions for complex projects.

Based in Vancouver, WA, Process Piping Fabrication, LLC provides design-build engineering, fabrication, and sustaining services for process piping. They specialize in serving industrial clients within the semiconductor, data center, food processing, and chemical manufacturing sectors. The company holds Oregon CCB and Boiler Business licenses.

Gilbert, AZ

Based in Gilbert, AZ, Ryan Mechanical Company specializes in commercial plumbing and piping system installation. Established in 1991, their skilled professionals provide comprehensive plumbing solutions, including installation, routine maintenance, and emergency repairs. They offer dedicated piping and repiping services for commercial clients.

San Francisco, CA

Based in San Francisco, CA, Sheeran Pipeline, Inc. is a general engineering construction company. They specialize in underground utility installations and repairs, including sewer laterals, main installations, storm drains, water, and fire lines. The company also handles underground electric conduit services throughout the San Francisco Bay Area.

Oakland, CA

Based in Oakland, CA, Shield-Fire & Safety Solutions Inc. specializes in comprehensive fire protection services across California. The company provides installation, design, modification, and repair for commercial and residential fire sprinkler piping systems. They also maintain kitchen hood fire suppression systems and conduct fire alarm inspections.

Auburn, CA

Based in Auburn, CA, Summit Pipelines specializes in comprehensive pipeline cleaning, CCTV inspection, and utility locating services. They efficiently manage diverse pipeline sizes, from 2-inch lateral lines to large 108-inch storm drain and sanitary sewer trunk lines, including challenging siphon lines, delivering projects on time and budget.

Tucson, AZ

Sun Mechanical Contracting, Inc., based in Tucson, Arizona, provides industrial piping services, specializing in process & utility piping and med & lab gas systems. This mechanical contracting company also offers HVAC, plumbing, and fabrication. Serving commercial, healthcare, institutional, and industrial sectors since 1977.

Tempe, AZ

Based in Tempe, AZ, Tempe Mechanical specializes in commercial plumbing and piping services, alongside comprehensive HVAC solutions. Since 1986, they provide installation, maintenance, repair, and mechanical design-build for commercial and industrial facilities, delivering efficient, scalable solutions with a client-first approach.

San Leandro, CA

Based in San Leandro, CA, Total Underground Construction specializes in comprehensive underground infrastructure services. They are a piping contractor, offering horizontal directional drilling, trenching, and excavation for water mains, sewer lines, storm drains, gas lines, and electrical conduits.

Tucson, AZ

Drain Medics specializes in trenchless sewer and drain solutions, offering no-dig repairs for pipeline problems in Tucson, AZ. Their services include cast iron and clay pipe repair, comprehensive trenchless sewer repair, sewer camera inspections, hydro jetting, and odor detection. The company focuses on efficient, minimally invasive methods.

Chandler, AZ

Based in Chandler, AZ, Trident Mechanical Services is a mechanical contractor specializing in diverse piping systems. They provide process piping, UHP prefabricated piping, chilled water, steam, hygienic, and high-purity gas systems. Serving demanding sectors such as healthcare, industrial, microelectronics, life sciences, and mission-critical facilities, Trident focuses on complex, high-standard projects.

Addison, IL

Based in Addison, IL, Twin Piping Company specializes in sanitary process piping for the pharmaceutical, personal care, and food industries. They provide stainless steel fabrication, new construction, expansion, repair, and maintenance services. The company serves the Chicagoland area and travels out of state to fulfill customer needs.

Kernersville, NC

Based in Kernersville, NC, U.S. Industrial Piping, Inc. specializes in industrial piping fabrication. The company is dedicated to providing quality products and services to customers, emphasizing continuous process improvement and a strong commitment to safety.

Based in North Wales, PA, U.S. Piping, Inc. is a family-owned commercial mechanical contractor established in 2003. They specialize in high purity process, steam, condensate, compressed air, and gas piping systems. Services include equipment rigging and skid fabrication, serving pharmaceuticals, food and beverage, universities, and hospitals.

Sacramento, CA

Based in Sacramento, CA, Veteran Pipeline Construction (VPC), a Charge Company, specializes in gas pipeline construction for utility infrastructure. They provide EPC and design-build natural gas distribution services for the West Coast, including stand-alone or joint trench installations, supported by in-house engineering and horizontal drilling expertise.

Ridgewood, NY

We Pipe LLC provides comprehensive piping contracting services, operating with extended working hours during the week and weekends. The company also offers 24/7 emergency services, ensuring availability for critical piping needs.

Santa Ana, CA

Based in Santa Ana, CA, ePIPE specializes in patented pipe restoration solutions for potable water and trenchless sewer/drain repairs. The company uses epoxy lining to eliminate leaks, provide safe drinking water, and restore drain lines for residential and commercial clients.

Kent, WA

Based in Kent, WA, Adept Mechanical Services Inc provides mechanical construction services, specializing in the design and installation of mechanical systems. Serving the Seattle Area for over 30 years, the company focuses on sustainable building for diverse construction types.

Kankakee, IL

Based in Kankakee, IL, Precision Piping Inc. provides expert plumbing and piping contractor services. They specialize in installing, maintaining, and repairing complex piping systems for various commercial and industrial applications. The company focuses on delivering high-quality, reliable solutions to meet diverse client needs in the region.

Auburn, WA

Based in Auburn, WA, Pipe Construction, Inc. is a full-service mechanical contractor. They specialize in negotiated work, including design-build (D/B), MC/CM, and design-bid-build methods. The company focuses on delivering quality and expertise to enhance construction teams and improve communities through their projects.

Brea, CA

Based in Brea, CA, West Coast Piping Services, Inc. provides comprehensive mechanical and process piping solutions for diverse industrial and commercial clients. Their services include pipe installation, fabrication, welding, system commissioning, preventative maintenance, and emergency services for sectors like chemical and food & beverage.

Longs, SC

Based in Longs, SC, Affordable Plumbing Sewer, Drain & Septic Service LLC is a mechanical plumbing contractor offering residential and commercial services. Their expertise covers water and gas piping, re-piping, sewer line service, hydro-jetting, drain cleaning, water heater and boiler repair/installation, leak detection, and plumbing for bathroom and kitchen renovations.

Woodridge, IL

Based in Woodridge, IL, AMS Industries, Inc. is a full-service MEP+™ contractor specializing in heavy industrial piping, food and process piping, HVAC, and industrial refrigeration. With over six decades of experience, they provide comprehensive solutions including electrical, fire protection, and plumbing.

Seattle, WA

Anthony's Plumbing Company, based in Seattle, WA, provides comprehensive plumbing services for residential and commercial buildings. They specialize in new construction, remodels, re-piping old plumbing, water line and gas piping repair/replacement, and drain services. The company emphasizes efficient and reliable solutions for various plumbing systems.

Big Valley Pipelines provides residential and commercial excavation, trenching, drainage, and grading services. They specialize in utility installation, stormwater solutions, and sewer line installation across the Bay Area. Additional services include concrete removal, offering comprehensive site preparation and infrastructure development.

Based in Philadelphia, PA, Bill Frusco Plumbing Heating and Air Conditioning offers comprehensive commercial plumbing, drain cleaning, and HVAC services. They provide repair, replacement, installation, and maintenance for heating, cooling, and plumbing systems, serving businesses across Philadelphia and surrounding counties.

Corpus Christi, TX

Based in Corpus Christi, TX, Bodine-Scott Air Conditioning & Plumbing Co. specializes in comprehensive HVAC and plumbing services for residential and commercial clients. They provide new system installations, repairs, maintenance, and tune-up services for air conditioning, heating, and general plumbing systems, including various piping work.

Compton, CA

Cal Piping Industrial, based in Compton, CA, specializes in industrial pipe manufacturing and fabrication. Services include pipe and spool fabrication, specialty welding, and Post Weld Heat Treatment (PWHT). They also provide sandblasting, coating, and custom specialty fabrication for diverse industrial applications.

Tucson, AZ

Based in Tucson, AZ, Cal's Plumbing Inc. provides comprehensive plumbing services for residential and commercial clients across Tucson and surrounding areas. Their expert team handles installation, repair, and maintenance of piping systems, fixtures, and water heaters, ensuring reliable functionality.

Chicago, IL

Based in Chicago, IL, Chicago Pipe Bending & Coil Company specializes in pipe, tube, and steel fabrication. With over four decades of experience, they bend, roll, coil, weld, cut, and thread various materials, including carbon steel to nickel. They serve diverse industries such as petro-chemical, agricultural, and food processing.

Westville, NJ

Based in Westville, NJ, Corporate Piping, Inc. delivers reliable commercial and residential plumbing and piping services. They specialize in solutions from faucet installations to complete sewer line replacements, using high-quality parts and equipment. The company provides free consultations and 24-hour emergency service, ensuring customer satisfaction with all piping work.

Wingate, NC

Based in Wingate, NC, Commercial Piping & Fabricating, Inc. provides professional piping and fabricating services. The company offers industrial and commercial clients specialized solutions for various project needs. With a focus on quality craftsmanship, they deliver essential support for complex piping systems.

American Canyon, CA

Based in American Canyon, CA, Dowdle & Sons Mechanical, INC. is a commercial and industrial contractor specializing in plumbing, piping, and HVAC services. They offer comprehensive service, repair, and installation for various projects across the 9 Bay Area Counties and the greater Sacramento region.

Conway, SC

First Choice Plumbing Services LLC, based in Conway, SC, provides comprehensive plumbing contracting services. Specializing in the installation, repair, and maintenance of various piping systems, the company caters to both residential and commercial clients. Their expertise covers water lines, drainage, and essential plumbing infrastructure.

Tukwila, WA

Based in Tukwila, WA, Gary's Pipelining & Drain Services LLC offers comprehensive sewer and drain contracting. They specialize in pipelining, drain cleaning, and trenchless sewer repair for both residential and business clients in the Seattle area. Their experienced technicians utilize state-of-the-art equipment to efficiently address plumbing issues.

Issaquah, WA

Based in Issaquah, WA, George Gas Piping provides gas piping installation services for residential and commercial projects. They specialize in electric to gas range conversions, fireplace gas inserts, kitchen gas line relocations, and various water heater installations. The company focuses on quality workmanship and customer satisfaction.

Troy, MI

Based in Troy, MI, Industrial Process Piping, LLC provides industrial piping contractor services. They offer design, installation, and startup of various systems for residential, commercial, and manufacturing facilities. The company prioritizes safety and quality, serving customers across Michigan, Ohio, Indiana, North Carolina, South Carolina, and Tennessee.

Campbell, CA

Based in Campbell, CA, Knockout Plumbing & Repipe Inc. provides professional plumbing and repiping services for residents and businesses in San Jose and surrounding areas. Established in 2022, the company specializes in comprehensive solutions including drain and sewer repairs, water services, and complete repiping projects, ensuring quality and efficiency.

Las Vegas, NV

Based in Las Vegas, Nevada, Leak Experts USA Plumbing specializes in comprehensive home repiping, mainline replacement, and sewer repair services. The company also provides expert leak detection, slab leak repair, and sewer camera inspections, ensuring efficient and reliable plumbing system operations for residential properties.

Benicia, CA

Based in Benicia, CA, MSR Mechanical LLC is a specialty mechanical project and service contractor. The company provides commercial and industrial refrigeration services, specializing in all piping service projects and maintenance for customers throughout the Greater Bay Area.

Croton-On-Hudson, NY

NY Trenchless is a family-owned company based in Croton-On-Hudson, NY, specializing in trenchless sewer and water line repair and replacement. They offer pipe lining, burst pipe repair, and comprehensive sewer solutions, serving residential and commercial clients across NYC and surrounding counties.

Livermore, CA

Based in Livermore, CA, Performance Plus Plumbing LLC provides residential, commercial, and industrial plumbing services across Northern California. With over 48 years of experience, the company specializes in plumbing, drain cleaning, water heaters, water filtration, water softeners, and backflow testing, serving the East Bay Area and Central Valley.

Sonoma, CA

Based in Sonoma, CA, Peterson Mechanical Inc. provides comprehensive mechanical contracting services. They specialize in HVAC, plumbing, hydronic, and process piping, offering in-house licensed engineering, design-build, BIM modeling, and fabrication. The company serves commercial and industrial clients with complete build and ongoing service.

Miami Lakes, FL

Based in Miami Lakes, FL, Phixser Solutions INC provides professional plumbing services for residential and commercial customers. The company also offers comprehensive home services, including electrical, HVAC, and remodeling. They prioritize same-day service and upfront pricing, with licensed and insured technicians ensuring quality work.

Conway, SC

Based in Conway, SC, Pipe Doctors provides 24-hour residential and commercial plumbing services. They specialize in a wide range of plumbing needs, including leaky faucet repairs, stopped-up drains, toilet repairs, and general plumbing leak solutions. The company serves the greater Myrtle Beach, SC area and surrounding communities.

Performance Pipelining Inc. provides sewer renewal installation processes using trenchless technology. The company specializes in lateral and mainline rehabilitation and repair, offering cured-in-place lining services. Its field crews have extensive experience in the field.

Huntington Beach, CA

Performance Pipeline Technologies, based in Huntington Beach, CA, specializes in delivering efficient, high-quality, and safe pipeline solutions. The company provides ready-to-implement solutions for various challenges, leveraging industry-leading equipment and trained personnel. They hold patents for their innovative pipeline technologies, focusing on reliable project completion.

Milpitas, CA

Based in Milpitas, CA, Preston Pipelines specializes in underground engineering and utility installation. Since 1970, they have provided services for storm drains, water, sewer, fire protection, and natural gas lines. Their expertise extends to comprehensive excavation projects and related underground infrastructure.

Based in Manheim, PA, Process Piping Solutions LLC specializes in sanitary piping and custom fabrication services. The company offers quality, efficient, and safe solutions for industrial and commercial clients, including 24-hour emergency service. They cater to a broad range of custom fabrication and sanitary piping needs.

Fresno, CA

Based in Fresno, CA, PR Plumbing, Heating & Air Conditioning Inc. provides comprehensive plumbing, heating, and air conditioning services. Since 2000, they have offered re-piping and large line replacement for both residential and commercial clients in Fresno and surrounding areas.

Tucson, AZ

Qualified Mechanical Contractors Inc. specializes in green development projects, designing and implementing mechanical systems for healthier, energy-efficient structures. They utilize cutting-edge techniques to reduce electricity consumption, maintenance, and noise production in commercial environments. The company provides prompt service and proactive solutions to mechanical issues for clients.

Hacienda Heights, CA

Based in Hacienda Heights, CA, Repipe Plumbing Solutions specializes in comprehensive repiping services for homes and businesses. They offer expert solutions for copper repiping, PEX repiping, and pipe repairs, ensuring reliable and lasting plumbing systems with a focus on quality workmanship.

Seattle, WA

Based in Seattle, WA, Pacific Custom Sewer and Drainage provides comprehensive contracting services for sewer and drainage systems. The company specializes in installing, repairing, and maintaining various piping infrastructures. They offer custom solutions for both residential and commercial projects, ensuring efficient and reliable underground drainage.

Mason, OH

Based in Mason, OH, Southern Process Piping Inc. is a full-service industrial contractor specializing in hygienic and process piping solutions. They serve the food, beverage, dairy, pharmaceutical, and manufacturing industries, offering services from engineering design and custom fabrication to preventive maintenance and 24/7 emergency repairs nationwide.

Peachland, NC

Based in Peachland, NC, Southern Piedmont Piping & Fab specializes in delivering comprehensive piping and fabrication services. This company provides solutions for industrial and commercial clients, focusing on the construction, installation, and maintenance of diverse piping systems.

Based in Langhorne, PA, US Pipelining LLC specializes in trenchless pipe lining and rehabilitation services. They provide solutions for storm, sanitary, and potable water pipelines using advanced CIPP methods. Serving commercial, industrial, municipal, military, and high-rise clients, the company handles projects from fire suppression to infrastructure restoration.

Ozone Park, NY

Based in Ozone Park, NY, Water Works Piping specializes in sewer and water main contracting. Services include fire hydrant and new utility installations, plus comprehensive water main and sewer line repair. They also provide NYC DEP emergency water main and sewer services, handling line violations and utility disconnections.

Clio, MI

Action Plumbing & Heating, Inc. is a family-owned contractor based in Clio, MI, specializing in comprehensive plumbing and heating services. They provide new construction, remodel, repair, and maintenance for both residential and commercial clients. Capabilities include water heater, boiler, and furnace installations, plus drain cleaning and radiant floor heating.

Ash, NC

Based in Ash, NC, J&S Plumbing of the Carolinas provides comprehensive plumbing and piping services. Specializing in the installation, maintenance, and repair of various piping systems, they serve commercial and residential clients across the Carolinas. The company delivers efficient and reliable water and waste management solutions.

North Highlands, CA

Based in North Highlands, CA, Performance Contracting Group delivers comprehensive construction services for commercial and industrial sectors. This employee-owned company, with over 60 years of experience, provides integrated service offerings designed to streamline diverse projects with an emphasis on quality craftsmanship.

Sacramento, CA

Pacific Mechanical Services, Inc. (PMS) is a full-service mechanical contractor in Sacramento, CA. Specializing in HVAC, plumbing, and piping solutions, PMS provides design, installation, maintenance, and repair for commercial and industrial clients. Their expertise covers process, hydronic, gas, and medical gas piping.

Peachland, NC

Based in Peachland, NC, Richmond Piping and Fabrication offers comprehensive piping and fabrication solutions for industrial clients. They specialize in pipe fabrication, process piping installation, structural steel, and mechanical installation. Services include field and specialty welding for diverse materials, serving chemical, oil & gas, and power generation sectors.

Walnut, CA

Based in Walnut, CA, Scorpion Process Piping provides comprehensive process piping fabrication and installation for diverse industrial sectors. They offer expert mechanical installation, equipment setting, orbital welding, and structural steel services. Serving clients in pharmaceutical, biotech, food & beverage, chemical, and semiconductor industries.

Found what you're looking for? Unlock 56 emails and 88 phones.

How to Choose a Company

  • Verify Weld Procedures and Qualifications: Insist on reviewing their Welding Procedure Specifications (WPS) and Procedure Qualification Records (PQR) for the specific materials (e.g., P91 chrome-moly, 316L stainless, carbon steel) and welding processes (e.g., GTAW, SMAW, FCAW) relevant to your project's ASME B31.1 or B31.3 code requirements.
  • Assess Code Compliance & Stamps: For pressure piping or vessels, confirm they possess the necessary ASME U, S, or PP stamps and a demonstrated history of successful audits, especially if your project falls under specific regulatory jurisdictions that mandate these accreditations.
  • Evaluate In-House Fabrication vs. Field Installation: Determine if their capabilities align with your project's fabrication needs—do they have a climate-controlled shop for precision spool fabrication with overhead cranes, or are they primarily a field installation crew? This impacts quality, schedule, and cost.
  • Scrutinize Quality Control (QC) and Non-Destructive Testing (NDT) Protocols: Request their typical QC plan, including details on welder qualification management, visual inspection procedures, and their approach to NDT methods like radiography (RT), ultrasonic testing (UT), magnetic particle inspection (MPI), or liquid penetrant inspection (LPI).
  • Examine Project-Specific Experience: Beyond general piping, verify their track record with projects involving similar process fluids (e.g., steam, cryogenic liquids, hazardous chemicals), operating pressures, temperatures, and specific piping systems (e.g., jacketed piping, double-containment systems, clean-in-place lines).
  • Red Flag - Inadequate Project Management & Change Order Process: Beware of contractors with vague change order clauses or a history of significant cost overruns stemming from poorly managed scope creep. A robust, transparent change management process for unforeseen conditions, especially in brownfield environments, is critical for piping projects.
  • Safety Performance Metrics: Demand their Experience Modification Rate (EMR) and Total Recordable Incident Rate (TRIR) for the last three years. Piping work often involves elevated work, confined spaces, and hot work, making a strong safety culture and verifiable performance paramount.

Frequently Asked Questions

What's the key difference between ASME B31.1 and B31.3 piping projects, and why does it matter for contractor selection?

ASME B31.1 (Power Piping) applies to steam generation plants and industrial installations, focusing on high-pressure, high-temperature service. B31.3 (Process Piping) covers chemical, petroleum, pharmaceutical, and other industrial process plants, with broader material and design flexibility but still rigorous requirements. Contractors specializing in one may lack the specific weld procedures, material experience, or quality control protocols required for the other, leading to compliance issues or project delays.

How do I verify a piping contractor's Welding Procedure Specifications (WPS) and Welder Performance Qualifications (WPQ)?

Request their full WPS documents, which detail all parameters for a specific weld joint, and the supporting Procedure Qualification Records (PQR) that prove the WPS produces a sound weld. For individual welders, ask for their WPQ records, demonstrating they are qualified to perform welds according to approved WPS, including the specific materials, positions, and processes applicable to your project. Don't just accept a statement of qualification; review the actual documentation.

When is orbital welding a critical capability to look for in a piping contractor?

Orbital welding is crucial for applications requiring extremely high purity, consistent weld penetration, and precise, repeatable results, such as pharmaceutical cleanroom facilities, semiconductor gas delivery systems, and certain aerospace or critical instrumentation lines. It minimizes contamination, ensures smooth internal surfaces, and reduces the risk of crevice corrosion or particulate entrapment, making it non-negotiable for hygienic or high-spec fluid transfer.

What specific documentation should I expect from a piping contractor upon project completion?

Beyond as-built drawings and material certifications (MTRs), expect comprehensive weld maps, NDT reports (radiographs, UT scans, etc.), hydrostatic or pneumatic test packages including charts and sign-offs, Post-Weld Heat Treatment (PWHT) records if applicable, and a complete data book for regulatory or operational compliance. For regulated industries, this documentation is as critical as the physical installation itself.

What are the most common causes of cost overruns with piping contractors, and how can I mitigate them?

The most frequent culprits are poorly defined scopes, unforeseen conditions in brownfield sites (e.g., undocumented tie-in points, clash detection failures), late material delivery, and inadequate management of change orders. Mitigate these by providing highly detailed engineering packages (P&IDs, isometrics), conducting thorough site walk-downs, including contingency in your budget for brownfield work, and establishing a clear, mutually agreed-upon change order process upfront with defined rates and approval thresholds.

How important are a contractor's safety statistics like EMR and TRIR in the piping industry?

Extremely important. Piping work often involves inherent hazards like working at heights, in trenches, with high-pressure systems, or hazardous materials, making safety paramount. A low Experience Modification Rate (EMR) and Total Recordable Incident Rate (TRIR) indicate a strong safety culture, effective training programs, and proactive hazard mitigation, which translates directly to lower risk for your project, fewer delays due to incidents, and potentially lower insurance costs.

Related Directories