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Zinc Plating Companies

Last updated: January 2026

This directory lists 86 zinc plating companies across the United States, from high-volume automated barrel lines to specialized manual rack plating facilities.

Buyers in this space are typically solving problems related to corrosion protection for ferrous metals, enhancing part appearance, or preparing surfaces for subsequent painting. This involves specifying the correct zinc deposit thickness, the type of chromate conversion (e.g., trivalent clear for RoHS compliance, or yellow for enhanced protection), and ensuring adequate hydrogen embrittlement relief for critical components.

Zinc plating suppliers range from large, multi-process finishing houses offering a full suite of services including electropolishing and anodizing, to smaller, highly specialized shops focusing exclusively on zinc and zinc alloys. Some cater to high-volume automotive runs with automated lines, while others specialize in complex, intricate parts requiring meticulous rack plating and specific masking operations for industries like aerospace or medical.

To ensure a successful engagement, buyers should come prepared with detailed part drawings, material specifications (including heat treatment status), required deposit thickness (e.g., 8-12 microns), desired chromate type, any post-treatment requirements, and performance standards such as specified salt spray hours (e.g., 96 hours to red rust). Suppliers will often inquire about the application and end-use environment to recommend the most suitable plating system.

A significant trend in the zinc plating industry is the continued shift towards environmentally friendlier processes. This primarily involves the widespread adoption of trivalent chromium passivation as a replacement for hexavalent chromates, driven by global regulations like RoHS and REACH, pushing platers to invest in new chemical lines and process controls while maintaining equivalent corrosion resistance.

86 companies·61 emails·81 phones

Company Directory

86 companies nationwide

Los Angeles, CA

Based in Los Angeles, CA, Accurate Plating Co. specializes in zinc coating and comprehensive metal finishing services. Established in 1950, they also provide chrome, bright tin, copper, nickel, and gold plating. Holding ISO9001:2015 certification, the company delivers high-quality, reliable solutions for businesses.

Newark, NJ

Based in Newark, NJ, Ace Powder Coating & Plating is a metal finishing company established in 1977. They provide a range of services including powder coating, sandblasting, and electroplating. The company also offers polished nickel finishing, focusing on flexibility and quick turnaround for various metal finishing needs.

Portland, TN

Advanced Plating, based in Portland, TN, specializes in automotive plating and restoration. They provide an array of plating finishes, beyond chrome, for materials including steel, pot metal, and aluminum. The company also offers commercial polishing and plating solutions for industrial clients, handling diverse project scales.

Montclair, NJ

Based in Montclair, NJ, Alcaro & Alcaro Plating Co., Inc. provides fully automated zinc barrel and rack plating services. Established in 1974, they specialize in zinc sulfamate nickel, electroless nickel, cadmium, and silver plating for aerospace, automotive, military, and construction industries. The company is ISO 9001:2015 certified.

Oxnard, CA

Based in Oxnard, CA, Alliance Finishing & Manufacturing offers premium plating and finishing services. They specialize in plating various metals, including stainless steel, aluminum, copper alloys, steel, and zinc substrates. The company provides polishing and secondary services to equipment manufacturers throughout North America and Europe for mission-critical products.

Stanton, CA

Based in Stanton, CA, All Metals Processing provides quality metal finishing services for critical applications. Operating since 1961, the company specializes in serving the aerospace, military, and defense industries. They deliver superior workmanship for projects ranging from small fasteners to large landing gear components.

Brooklyn, NY

Based in Brooklyn, NY, American Metal Coatings specializes in zinc and zinc alloy plating, phosphating, and cleaning. They utilize automated lines to provide corrosion-resistant finishes, including passivates, chromates, dyes, and sealers. Serving component manufacturers, their clientele spans automotive, heavy truck, agriculture, and consumer goods industries.

Dekalb, IL

Armoloy Corporation, based in DeKalb, IL, is a global provider of diversified metal surface treatment and plating technologies. Certified with NADCAP, AS9100, and ISO 9001, they engineer solutions to enhance wear life, reduce friction, and provide corrosion protection for the manufacturing community, operating 16 facilities worldwide.

Santa Clara, CA

Arnold's Metal Finishing, based in Santa Clara, CA, provides Nadcap accredited metal finishing services from its state-of-the-art facility. Leveraging premium finishing standards, the company serves industrial clients, including those in the aviation industry, from its Silicon Valley location.

Fort Worth, TX

Based in Fort Worth, TX, Arrow Plating Co Inc offers metal finishing services with over 70 years of experience. Since 1982, they have specialized exclusively in zinc-related processes, performing all zinc plating to meet rigorous ASTM-B633 standards.

Compton, CA

Bowman Plating Co., located in Compton, CA, provides industrial plating services primarily for aerospace and related industries. Established in 1945, their 70,000 sq ft plant operates 24/5. They leverage experienced staff and technology to efficiently process products, offering job tracking and pick-up/delivery.

Pacoima, CA

Burbank Plating Service Corp. offers expert metal finishing, specializing in Zinc, Cadmium, Zinc-Nickel, and Tin-Zinc plating. Serving aerospace and automotive sectors, they handle high-volume barrel plating and detailed rack plating for diverse part sizes. The company is Nadcap Approved and provides RoHS compliant solutions.

Cal-Tron Plating Inc. is a metal finishing company with over 60 years of experience. They provide a range of services including decorative plating, polishing, and general production metal finishing. The company focuses on various plating solutions for industrial and commercial clients.

Chem Processing Inc. provides comprehensive metal finishing services. They specialize in zinc plating for general corrosion and zinc nickel alloy plating for premium protection. Offerings also include cadmium, copper, electroless nickel, hard chrome, silver plating, and anodizing treatments for industrial applications.

Escondido, CA

Based in Escondido, CA, Chrome Plating USA & Zinc Plating provides metal finishing services, specializing in clear and yellow zinc plating, electroless nickel, chem film, and anodizing. They serve fabricators, manufacturers, and restoration projects for automotive, motorcycle, and plumbing hardware, offering local pick-up and delivery.

Cleveland, OH

City Plating, based in Cleveland, Ohio, is a specialized provider of zinc plating and comprehensive metal finishing services. The company offers zinc, zinc nickel, and zinc cobalt plating, alongside various chromate conversion coatings and dehydrogenation baking. They primarily serve industrial customers in automotive, construction, and heavy equipment sectors.

Fresno, CA

Based in Fresno, CA, Commercial Electro Plating Inc. specializes in zinc rack and barrel plating services. With over 50 years of experience, they provide durable, high-quality finishes for steel, brass, and copper parts. They also offer additional metal finishing solutions including electropolishing and electroless nickel plating.

Fridley, MN

Based in Fridley, MN, D&B Plating is a full-service provider specializing in zinc plating with multiple chromate finishes. They also offer chromate conversion for aluminum alloys and passivation for stainless steels. Services are available in bulk, barrel, or rack plating, focusing on quality and quick turnaround.

Auburn, IN

Based in Auburn, IN, DeKalb Metal Finishing provides zinc nickel, zinc iron, and zinc electroplating services. They specialize in RoHS compliant alkaline processes with trivalent passivates and sealers, offering enhanced corrosion protection, aesthetics, and wear resistance. The company serves automotive and general industry sectors with over 70 years of experience.

Houston, TX

Based in Houston, TX, Diamond Metal Finishing provides comprehensive metal finishing services. They specialize in various electroplating processes, including zinc plating, electroless nickel, tin plating, and anodizing. The company also offers phosphate coating, passivation, powder coating, and painting for diverse industrial applications.

Santa Clara, CA

Based in Santa Clara, CA, EC Plating Inc. offers zinc plating (clear, gold) and diverse metal finishing services. With 40 years of experience, they provide alodine, anodizing, electroless nickel, and electropolishing. This ISO 9001:2015 certified company serves medical, government, aerospace, and telecommunication industries.

Electrolurgy offers comprehensive metal finishing solutions, including anodizing, painting, electroless nickel, and zinc-nickel plating. With 54 years of experience, the company serves top aerospace and defense clients across the US, ensuring rigorous compliance with NADCAP and AS9100 certifications.

Oxnard, CA

Elite Metal Finishing LLC, based in Oxnard, CA, provides comprehensive chemical processing, plating, painting, and non-destructive testing services. With over 60,000 square feet of on-site facility space, the company supports customers from prototype to production, serving various industrial needs.

Hayward, CA

Based in Hayward, CA, Electro-Plating Specialties Inc. provides comprehensive metal finishing services, with a strong focus on zinc plating and zinc nickel plating. From their 30,000 sq ft facility, they also offer gold, silver, tin, and electroless nickel plating, anodizing, passivation, and heat treatment solutions.

Based in Erie, PA, Erie Plating provides certified aerospace, military, and industrial metal finishing, including plating, anodizing, and polishing. With Nadcap and ISO 9001:2015 certifications, this veteran-owned company tackles tough finishing challenges for clients ranging from boutique manufacturers to aerospace leaders, ensuring quality and on-time delivery.

Chicago, IL

Based in Chicago, IL, Gatto Industrial Platers, Inc. provides ISO 9001:2015 certified zinc and zinc-nickel electroplating services. Their 210,000 sq ft facility processes industrial parts up to 27 feet and 8000 lbs. They serve the automotive, agricultural, electrical, and railroad industries with RoHS-compliant finishes.

Los Angeles, CA

Based in Los Angeles, CA, General Brite Plating is a metal finishing company specializing in a range of plating services. They cater to industrial and commercial clients, providing solutions for corrosion protection and surface enhancement. The company offers various metal plating processes, including capabilities for zinc plating requirements.

Covington, GA

Georgia Plating, Inc., based in Covington, GA, specializes in industrial zinc plating and e-coating (electro-coated paint). With decades of experience, they provide technical engineering and high-quality finishes. The company offers competitive pricing, analyzes plating specifications, and utilizes environmentally friendly, non-lead based e-coating processes meeting automotive requirements.

Fenton, MI

Based in Fenton, MI, Holly Plating Company specializes in zinc electroplating and zinc plating services. The company provides rack and barrel plating for metallic producing and fabricating manufacturers. They serve diverse industries such as automotive, industrial, heavy truck, construction, agriculture, and defense.

Houston, TX

Based in Houston, TX, Industrial Metal Finishing offers industrial finishing services. They provide comprehensive electroplating, including zinc, electroless nickel, and cadmium. Additional services feature various spray coatings and other metal finishing processes. They serve diverse sectors like oil and gas, aviation, military, and fastener manufacturers.

Fridley, MN

INCEERTEC Metal Finishing Company, based in Fridley, MN, is a major provider of metal plating and finishing solutions. They offer a large range of electrolytic and electroless plating options, anodizing, and heat treating services. The company serves primary OEMs across the aerospace, medical, and defense industries.

Grand Prairie, TX

Grand Prairie, TX-based J & S Plating and Repair offers industrial plating services. The company ensures high-quality outputs through strict compliance with client drawings and specifications. Operating dedicated plating facilities, they serve commercial clients with diverse project needs, emphasizing precision and quality control.

Warren, MI

Based in Warren, MI, KC Jones Plating Company provides zinc plating solutions for manufacturers, preventing rust and corrosion for over six decades. Specializing in zinc, zinc nickel, and zinc iron plating, they serve automotive, aerospace, and military sectors with comprehensive surface finishing and part protection.

Wichita, KS

Based in Wichita, KS, Metal Finishing Company is a direct provider of comprehensive metal processing and finishing solutions. They serve as a one-stop resource, offering various types of plating, including zinc plating, for industrial and commercial customers seeking quality surface treatments.

Bell Gardens, CA

Based in Bell Gardens, CA, Metal Surfaces Inc. provides precision electroplating and surface finishing services. They offer zinc-nickel, electroless black nickel, and black chrome. Serving aviation, aerospace, automotive, medical, military, and electronics industries, MSI operates a 70,000 sq ft facility with extensive reel-to-reel, rack, and barrel plating capabilities.

Cincinnati, OH

Based in Cincinnati, OH, Micro Metal Finishing specializes in custom zinc and zinc-nickel plating processes. They also provide black chromate finishing for the automotive industry. Utilizing alkaline plating chemistry, the company ensures outstanding thickness distribution for various part sizes.

Garland, TX

Based in Garland, TX, Micron Industries is an experienced metal finishing and electroplating company, operating since 1971. They provide a robust selection of services including Zinc Plating (Chloride and Alkaline), Zinc Nickel alloys, Type II and III anodizing, ChemFilm, electropolish, passivation, electroless nickel, and precious metals.

Medina, OH

Based in Medina, OH, Miller Plating LLC is an electroplating facility with over 50 years of experience. They provide a wide range of zinc, zinc-iron, and zinc-nickel plating options, including passivate capabilities for parts up to 11 feet. The company also operates a 14,000 sq ft warehouse.

Milwaukee, WI

Based in Milwaukee, WI, National Plating Company offers zinc electroplating, pickling and passivation, electropolishing, and testing services. With over 100 years of experience, this ISO 9001:2015 certified provider serves diverse industries such as aero/defense, medical, power distribution, railway, and electric vehicles.

Garland, TX

Nor-Tex Metal Finishing is a Garland, TX-based company providing quality surface protection services. They focus on enhancing durability and functionality for various parts, operating with an ISO 9001 certified quality management system. The company specializes in metal finishing processes, which commonly include zinc plating.

Alhambra, CA

Based in Alhambra, CA, Pemaco-Plating is an established provider of electroplating and comprehensive metal finishing services, including wet paint application and mechanical finishing. Operating since 1946, the company offers extensive knowledge and expertise for various metal finishing needs in the Los Angeles area.

Los Angeles, CA

Pentrate Metal Processing, Inc., based in Los Angeles, CA, offers comprehensive metal finishing and electroplating services. They specialize in plating and coating for fasteners, firearm components, and industrial parts. Services include chrome and nickel plating of die-cast zinc components, black oxide coating, and custom plating solutions.

Pico Rivera, CA

Based in Pico Rivera, CA, Pico Rivera Plating Inc. is a full-service metal finishing and electroplating company. They specialize in zinc plating, electroless nickel, copper, and passivation for precision components. Serving aerospace, automotive, medical, and electronics industries, they offer high-quality metal finishing solutions.

Green Bay, WI

Pioneer Metal Finishing specializes in comprehensive metal finishing solutions for manufacturers and OEMs, processing millions of parts annually. Based in Green Bay, WI, they work with materials including aluminum, steel, and zinc die cast, providing services for corrosion resistance, wear resistance, and aesthetic enhancements.

Reedsburg, WI

Plateco Inc. specializes in zinc plating services, including barrel, rack, and mechanical galvanizing. The company is committed to high quality, on-spec parts, and timely delivery, boasting a low customer return rate and a 95% on-time record, serving as a dedicated customer partner.

Dayton, OH

Plating Technology, Inc., based in Dayton, OH, offers high-volume bulk barrel plating. They specialize in anti-corrosion zinc alloy finishes, including zinc nickel, tin zinc, and zinc iron. Serving automotive and agriculture industries, the company is an approved applicator for ZinKlad 1000 and 1000B.

Anaheim, CA

Based in Anaheim, CA, Precision Anodizing and Plating, Inc. is a family-owned, Nadcap and ISO9001 certified provider of anodizing, plating, and metal finishing. With over 47 years of experience, they serve military, aerospace, medical, and automotive industries from their 48,000 sq ft facility.

Sun Valley, CA

Based in Sun Valley, CA, Prime Plating provides precision electroplating and anodizing services, notably Zinc-Nickel and Cadmium plating. Since 1986, their 30,000 sq. ft. facility has served commercial, military, and aerospace sectors. They are known for high-quality metal finishing, strict controls, and consistent repeatability.

Altamonte Springs, FL

Seminole Metal Finishing specializes in expert electroplating and metal finishing services. Based in Altamonte Springs, FL, the company provides high-quality surface treatment solutions for industrial and commercial clients. They offer fast quotes for custom plating needs via email.

Los Angeles, CA

Spectrum Plating Company provides world-class metal finishing services, offering reel-to-reel, rack, and barrel plating for contacts and components. They serve a diverse range of industrial clients in sectors such as automotive, computer, connector, aerospace, and telecommunications. Committed to quality, this company specializes in industrial plating solutions.

Providence, RI

Based in Providence, RI, Surface Coatings LLC offers commercial metal finishing services, including zinc, electroless nickel (with or without Teflon®), tin, chrome, and black oxide. Utilizing state-of-the-art equipment and various plating lines, they handle precision machined parts and larger components up to 10 feet for OEM clients.

Houston, TX

Southwestern Plating Co Inc, based in Houston, TX, is a seasoned metal finishing and industrial coatings provider. With over 65 years of experience, they offer electroplating services, including zinc chromate conversion, for superior corrosion protection and performance. The company serves manufacturers across diverse industries.

Eastanollee, GA

Team Metal Finishing Inc. provides comprehensive metal finishing services including zinc plating, electroless nickel, passivation, and anodizing. Based in Eastanollee, GA, the company serves industrial clients with capabilities like shot peening, e-coat, and wet paint for diverse applications.

Van Nuys, CA

Based in Van Nuys, CA, Van Nuys Plating Inc. is a family-owned and operated metal plating company established in 1954. They provide diverse services, including black oxide, cadmium, chrome, copper, electroless nickel, silver, tin, and zinc plating for industrial applications.

Chatsworth, CA

Based in Chatsworth, CA, West Valley Plating Inc. is a full-service metal finishing provider specializing in plated and anodized parts. Serving military, aerospace, and commercial industries, they offer comprehensive services including plating, anodizing, passivation, and chemical conversion coatings from their own facilities.

Northwood, OH

Based in Northwood, OH, Whitaker Finishing, LLC has provided quality metal plating and finishing services since 1898. They specialize in automated barrel zinc-nickel and zinc copper plating, featuring three advanced, fully automated zinc-nickel plating lines. Whitaker Finishing serves industrial and commercial customers across several US states.

Roseville, MI

Based in Roseville, MI, Wolverine Plating Corporation provides barrel electroplating services. They specialize in zinc and zinc-nickel plating for high-volume fasteners, machined parts, and stampings. Serving automotive, construction, and military industries, the company offers quality solutions with over 60 years of experience.

Anaheim, CA

Based in Anaheim, CA, ZincNation, Inc. provides advanced zinc metallizing and specialty coating services for steel products. With over 30 years of experience, the company creates an active galvanic barrier against corrosion, enhancing product durability. They handle projects of all sizes, including fences, gates, and structural support beams.

Hamburg, NY

BFG Manufacturing, based in Hamburg, NY, offers high-volume industrial plating services. They specialize in consistent quality zinc, zinc nickel, e-coat, trivalent chromates, and phosphates finishes for various industrial applications.

Nashville, TN

Based in Nashville, TN, Quality Plating Co., Inc. provides comprehensive metal finishing services. They specialize in chromate zinc plating, trivalent plating, and electroless nickel plating, along with black oxide coating. This ISO 9001:2000 registered company offers solutions for corrosion protection, wear resistance, and improved part aesthetics.

Vonore, TN

Volunteer Metal Finishing, an ISO 9001:2015 certified job shop in Vonore, TN, provides direct zinc plating (barrel & rack, clear & yellow). Additional services include anodizing, chromate conversion coating, electropolish, passivation, and black oxide. The company emphasizes quality, quick turnarounds, and competitive pricing for industrial clients.

Piedmont, SC

Based in Piedmont, SC, Aalberts RMF specializes in electroplating, e-coat, and powder coat finishes for industrial and commercial customers. The company offers a comprehensive range of surface finishing solutions, complemented by various value-added services to support client business needs.

Houston, TX

Based in Houston, TX, Accurate Precision Plating specializes in industrial metal finishing and plating services. They offer a range of solutions including gold, silver, and nickel plating, utilizing both barrel and rack methods. Committed to continuous improvement, the company protects and enhances metal components for various applications.

Santa Ana, CA

Based in Santa Ana, CA, Active Plating, Inc. provides industrial Chloride Acid Zinc Plating (B-633) services for steel, offering zinc chromates in Blue Brite and Gold. Their tanks handle parts up to 9 feet long and 3 feet wide. They also specialize in chemical film for aluminum surfaces and passivation for stainless steel.

Escondido, CA

Based in Escondido, CA, A & D Electroless Nickel Zinc Plating Anodizing Chem Film Passivation offers comprehensive metal finishing services. The company specializes in in-house zinc plating (Types I, II, III), electroless nickel, anodizing, chem film, and passivation. They provide fast turnaround times, immediate quotes, and serve local manufacturers across Southern California.

San Diego, CA

Based in San Diego, CA, Anocote Metal Finishing provides a wide range of metal finishing solutions, prominently featuring zinc plating services. They offer various chromate finishes and specialize in industrial applications, including aerospace, defense, and medical sectors.

Asheville, NC

Asheville Metal Finishing Inc., based in Asheville, NC, provides industrial electroplating, metal restoration, and anodizing services. Specializing in zinc plating (ASTM-B-633-15), nickel, and silver finishes, the company offers corrosion resistance solutions. It serves commercial clients in automotive, medical, and recreational fields.

Tucker, GA

Based in Tucker, GA, Durable Industrial Finishing Company (DIFCO) specializes in high-capacity zinc plating services for metal surfaces. They offer a variety of colors and accommodate diverse sizes and batch loads. Operating a 65,000 sq ft automated facility for over 60 years, DIFCO provides protective coatings and on-time delivery for industrial clients.

Hamden, CT

Based in Hamden, CT, Giering Metal Finishing provides extensive metal finishing services, specializing in high-quality coatings and corrosion protection. With over 70 years of experience, the company serves industrial clients nationwide, offering durable surface treatments for various metal components.

Garland, TX

Based in Garland, TX, Gleco Plating specializes in alkaline zinc plating services, adhering to ASTM B-633 and B-840 standards. They accommodate parts up to 120" x 36" x 72", providing corrosion resistance without excess thickness for industrial applications.

Great Lakes Metal Finishing, Inc. specializes in zinc and zinc nickel electroplating services, providing trivalent and hexavalent chromate finishes such as black, yellow, clear, and olive drab. Serving industrial, automotive, and manufacturing clients since 1994, the company processes products to high quality standards and holds Zinklad certification.

Santee, CA

Based in Santee, CA, Industrial Metal Processing offers comprehensive zinc plating services, adhering to ASTM B633 and QQ-Z-325 specifications, available in yellow/gold, clear, and black finishes. They also provide expert painting, powder coating, and Cerakote solutions for industrial, military, and commercial applications.

Fort Worth, TX

Based in Fort Worth, TX, JB Chrome Plating provides a full range of metal finishing services, including zinc plating, chrome plating, anodizing, and powder coating. With over 30 years of expertise, they serve industrial and commercial clients with quality surface treatments in the Dallas-Fort Worth Metroplex.

Sacramento, CA

Based in Sacramento, CA, Metal Finishing Group offers comprehensive metal finishing solutions from its large-scale facility. With tanks up to 12 ft long, they accommodate diverse part dimensions for critical applications in leading sectors. The company operates Northern California’s largest finishing infrastructure, ensuring on-schedule project delivery.

San Diego, CA

Based in San Diego, CA, Miramar Metal Processing provides comprehensive metal finishing services. The company specializes in various plating options, including zinc plating per QQ-Z-325 and ASTM B633, with clear, yellow, and black finishes. They also offer anodizing, chemical film, passivation, and powder coating for industrial applications.

New Britain, CT

Northeast Metal Works offers zinc plating services, providing an environmentally friendly and cost-effective solution to protect metals like carbon steel and brass from corrosion. They specialize in safeguarding various metal components for industrial applications.

Spokane Valley, WA

Based in Spokane Valley, WA, Novation Inc. is a Nadcap certified metal finishing company providing extensive surface finishing solutions. They specialize in clear zinc plating, a RoHS compliant product, offering aesthetically appealing and protective finishes for parts. Novation delivers high quality with fast turnaround times and consistent results.

Santa Ana, CA

Based in Santa Ana, CA, Reid Metal Finishing provides precision metal finishing services, including anodizing, chemical film, and various plating types. The company offers Zinc-Nickel plating, alongside electrolytic nickel, electroless nickel, and cadmium plating. Serving aerospace, medical, defense, and industrial sectors, it also performs non-destructive testing.

Based in Emigsville, PA, Sharretts Plating provides industrial plating and metal finishing services. They offer a range of specialized plating solutions, including common processes like zinc plating, for various industries across the U.S.

Garland, TX

Based in Garland, TX, Texas Precision Plating, Inc. offers automatic barrel zinc plating, anodize, and chemical film services. They provide other metal finishes for commercial, automotive, electronics, aerospace, military, and government specifications. This family-owned company has operated since 1966.

Batavia, NY

Based in Batavia, NY, Tompkins Metal Finishing, Inc. offers rack plated alkaline zinc finishing with clear, yellow, and black chromate options. Their 65,000 sq ft facility is ISO9100:2015 and AS 9100 Rev D certified, providing metal finishing for aerospace, defense, and medical industries.

Los Angeles, CA

Based in Los Angeles, CA, Valley Plating Works, Inc. offers ISO 9001 certified barrel and rack zinc plating services, leveraging over 90 years of electroplating experience. They utilize state-of-the-art proprietary systems, ensuring dependable production volume and efficient turnaround times for various manufacturing customers.

Oceanside, CA

Based in Oceanside, CA, West Coast Plating offers comprehensive metal finishing services. Capabilities include Electroless Nickel, Chrome, Brass, Copper, and Nickel Plating, along with chemical stripping, patinas, and metal polishing. They provide diverse metal treatment solutions for industrial applications.

Morgan Hill, CA

GMP Plating Inc., located in Morgan Hill, CA, specializes in high-quality zinc plating services. The company provides a variety of zinc finishes, including clear, yellow, and black chromates, to meet diverse industry specifications. They offer robust metal finishing solutions for commercial and industrial applications.

Humble, TX

Based in Humble, TX, Houston Plating & Coatings LLC offers industrial metal finishing, specializing in zinc plating. They also provide electroless nickel, phosphate plating, anodizing, and powder coating. Serving diverse sectors including oil & gas, power generation, chemical, and general manufacturing, the company operates extensive production facilities.

Anaheim, CA

Based in Anaheim, CA, Platinum Surface Coating provides comprehensive metal finishing services for industries like aerospace, medical, and automotive. Their capabilities include clear, yellow, and black zinc plating, anodizing, chromate conversion, passivation, electroless nickel, tin plating, and powder coating.

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How to Choose a Company

  • Verify their capability for hydrogen embrittlement relief treatments, especially for high-strength steel components (e.g., 180 ksi ultimate tensile strength or higher). Demand documented process control for bake times and temperatures post-plating to mitigate this critical failure mode.
  • Confirm their expertise in applying the specific chromate conversion you require, whether it's trivalent clear, yellow, or black, and that they can meet your desired salt spray hour performance (e.g., ASTM B117, 96 hours to white corrosion, 240 hours to red rust). Inquire about their lab testing capabilities and typical pass rates.
  • Assess their suitability for your part geometry and production volume by understanding their barrel vs. rack plating capacity. Small, intricate parts or those requiring selective plating often necessitate rack lines, while high volumes of bulk components are better suited for barrel plating, but beware of potential part impingement or inconsistent coverage in barrels for delicate items.
  • Red Flag: Be wary of suppliers who don't ask detailed questions about your part's end-use, material, or critical dimensions during the quoting phase. A good plater will probe for information regarding masking requirements, critical thread tolerances, or the presence of blind holes, which are all specific challenges in zinc plating.

Supplier Types at a Glance

TypeBest ForTypical MOQ
High-Volume Automated PlatersLarge production runs of small to medium-sized parts (fasteners, stampings), automotive, appliance components.10,000+ pieces or several thousand pounds.
Specialty Rack PlatersComplex, delicate, or large parts requiring precise finish, masking, or critical dimension control; aerospace, medical, defense.50-1,000 pieces, higher per-piece cost.
General Job ShopsPrototyping, small to medium runs, diverse part types, repair/rework.1-100 pieces (prototypes), 500-5,000 pieces (production).
Multi-Process Finishing HousesProjects requiring zinc plating alongside other finishes (e.g., anodizing, electropolishing, powder coating) from a single source.Varies widely based on specific processes; often cater to diverse needs.

Frequently Asked Questions

What's the critical difference between barrel plating and rack plating for zinc, and how do I choose?

Barrel plating involves processing many small parts in a rotating barrel, which tumbles them through the plating solution. It's highly cost-effective and efficient for high-volume, bulk components that can withstand some abrasion without damage or critical surface finish requirements. Rack plating, conversely, involves individually fixturing parts on racks. This method is preferred for larger, delicate, or complex parts with intricate geometries, critical dimensions, or areas that require selective plating or masking, ensuring uniform coverage and minimizing contact marks, though it comes at a higher cost per part. Your choice depends on part size, geometry, volume, and surface finish criticality.

How do I ensure hydrogen embrittlement isn't an issue for my zinc-plated high-strength steel parts?

Hydrogen embrittlement is a critical concern for high-strength steel (typically >180 ksi UTS) components after zinc plating, as hydrogen can be absorbed during the plating process, leading to delayed brittle fracture. To mitigate this, a post-plating bake treatment is essential. You must specify the precise baking temperature (e.g., 375-400°F or 190-205°C) and duration (e.g., 3-24 hours, depending on material thickness and strength) to your plater. The baking must commence within a specified timeframe (e.g., 1-4 hours) after plating and before any chromate conversion or topcoat application. Always request documentation of their baking process parameters for critical parts.

What do "clear," "yellow," and "black" chromate mean for zinc plating, and which should I specify?

These terms refer to the color and composition of the chromate conversion coating applied over the zinc layer as a post-treatment to enhance corrosion resistance. Clear Chromate (Trivalent) offers good corrosion protection, typically appearing clear or slightly blue. It's widely used for environmental compliance (RoHS, REACH) and for parts where appearance is critical but a distinct color is not desired. Yellow Chromate (Trivalent or Hexavalent) provides superior corrosion resistance compared to clear chromates, giving parts a distinct iridescent yellow or gold finish. While hexavalent yellow offers excellent performance, trivalent yellow is now common due to environmental regulations, aiming to match or exceed hexavalent performance. Black Chromate (Trivalent or Hexavalent) delivers a deep black finish with good corrosion resistance, often desired for aesthetic purposes or specific applications. Like yellow, trivalent black is increasingly replacing hexavalent black. Your choice depends on the required corrosion resistance (measured in salt spray hours to red rust), aesthetic requirements, and compliance with environmental regulations.

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