We offer epoxy coated flanges upon requestthat designed to meet industry standards for corrosion resistance and long service life. They are available in multiple types and sizes.
Epoxy coated flanges are steel flanges protected with Fusion Bonded Epoxy (FBE) coating. This coating, sometimes referred to as “powder coating”, is a thermosetting epoxy powder that permanently bonds to the steel surface, establishing it as the industry standard for corrosion protection across pipelines, water systems, sewage networks, oil & gas facilities, power generation & utilities, marine & coastal environments, fire protection, and HVAC systems. It is applied to the entire surface of the flange.
FBE coating is commonly used in harsh environments where steel is exposed to saltwater, chemicals, and other corrosive elements. It provides effective protection for buried pipelines that face constant moisture and soil-induced corrosion.
Because this coating delivers strong resistance against corrosion, abrasion, and chemical exposure, it helps to extend the service life of flanges. It also reduces friction inside the pipeline, allowing for better fluid flow and minimizing wear over time. Furthermore, it enhances pipeline performance by reducing internal friction, improving fluid flow, and reducing component wear over time.
Beyond durability, FBE coating is an environmentally friendly solution. The application process releases minimal to zero harmful emissions, making it a preferred choice for industries that value sustainability and compliance with modern environmental standards.
The standard for epoxy-coated flanges and pipe systems is AWWA C213-22 – Fusion-Bonded Epoxy Coatings and Linings for Steel Water Pipe and Fittings. It describes the minimum requirements for materials, application, and testing of fusion-bonded epoxy coatings. It applies to steel water pipelines and fittings, including welded joints, connections, and special sections used in underground or underwater environments.
Fusion-bonded epoxies are heat-activated, chemically cured systems designed to provide long-lasting protection against corrosion and deterioration. The standard ensures consistent quality when FBE is applied to both the interior and exterior surfaces of steel water pipelines and fittings.
Each option provides different levels of corrosion and abrasion protection. Selection depends on fluid type, environmental exposure, and service conditions.
FBE coating provides strong chemical and abrasion resistance, protecting flanges used in oil and gas transmission lines against harsh hydrocarbons and corrosive substances.
Used in power plants and processing facilities, epoxy-coated flanges maintain integrity in high-temperature, high-pressure, and chemically aggressive conditions.
Networks FBE-coated flanges ensure reliable performance in fire suppression piping and HVAC systems, where long-term corrosion resistance and safety are critical.
Slides over the pipe and is welded at both the inner and outer diameters. Easier to install and align than weld neck, but suited for moderate pressure systems.
Solid flange with no bore, used to seal the end of a pipe system or pressure vessel. Allows easy access for inspection or future expansion.
Designed with a long tapered hub that is welded to the pipe, providing excellent strength and stress distribution. Ideal for high-pressure and high-temperature applications.
Has a socket to insert the pipe before welding. Provides good flow characteristics and is used in small-bore, high-pressure lines.
Features internal threads to connect with externally threaded pipes without welding. Common in low-pressure and non-critical applications.
Used with a stub end fitting. The flange itself does not touch the process fluid and can rotate around the pipe, making alignment and assembly easier.
They provide long-lasting corrosion resistance, are ANSI/ASME-compliant, and extend the service life of piping systems.
To order epoxy coated flanges from API International, determine your required pipe size, pressure class, material, and any special standards (such as ASME B16.5). Contact API International’s experienced team and we will help you select the right flange for your application.
• Custom Bolt Holes, Overbore, Counterbore, Tapped, Welds, O-ring Grooves, Threads, Special Serrations, Bevels, Chamfers
• Metric Parallel, Metric Tapered, Parallel (BSPP), Taper Thread (BSPT), UN/UNF/UNC Thread, NPT (National Pipe Thread)
• MWD
• Contact API’s engineering department for exact specifications and tolerances.
Plastic: Delrin, POM, Lexan, Nylon 66, Nylon 6, PEEK, PP, PE, Acetal
Rubber: EPDM, Neoprene, Buna-N, Viton
Aluminum: A2011, A2024, A2017, A5052, A5056, A6061, A6063, A6463, A6082, A7075
Copper: 3600, 3604, 3771
Titanium: 1-28
Steel Series:
• Ductile Iron: ASTM A536
• Carbon/Mild Steel: A105, A36, A516-70, A572-50, etc.
• Stainless Steel:
- 300 Series – 303, 304, 304L, 316, 316L
- 400 Series – 420J2, 430, 434, 442
Special Metals: Hastelloy, Inconel, Incoloy, Duplex 2205, Super Duplex 2507, Chrome Steel, alloys, or their equivalents
Stock Finish, Spiral Serrated (Phonographic), Concentric Serrated, Smooth Finish, Cold Water Finish, MWD, Phonographic
Dipped, Nickel Plating, Zinc Plating (clear, yellow, black, red, blue), Super Agitine, Powder, Painted, Galvanized, Epoxy, Lacquer
Water/Wastewater, Irrigation, Agriculture, HVAC, Marine, Exhaust, Mining, Energy/Power Generation/Oil
• Forged:
- Ring Rolling:
• Materials: Carbon Steel, Stainless Steel, Duplex
• Size: 2–202”
• Cast:
- Centrifugal Casting (Industrial):
• Material: Stainless Steel
- Continuous Casting:
• Material: Stainless Steel
- Sand Casting:
• Material: A536, Stainless Steel, Ductile Iron
- Investment/Lost-Wax/Precision Casting
• Material: Stainless Steel
Machining: Milling, Turning, Facing, Boring, Drilling, Tapping, Counter Sinking, Laser Cutting, Water Jet, Plasma Cutting
| Products | Type | Materials | Size Range |
|---|---|---|---|
| Flanges | Flat-Face, Raised-Face, & Plate: Slip-On/Ring Weld, Neck, Blind, Socket Weld, Orifice, Reducing, Threaded | See Materials List | 5–202″ |
| Gaskets | Molded, Extruded, sheet | EPDM, Buna-N, NBR, Non-Asbestos (GNA), Red Rubber (GRR), Viton | 5–60″ |
| Screens For Filters | Basket Screens and Cone Screens (Perforated, Mesh) | Galv. Carbon Steel, Carbon Steel, Stainless Steel | 6”D x 8’-H |
| Rings | Exhaust Rings (Marmon Flanges for DPF Filters) | Carbon Steel, Stainless Steel, Aluminum | 1–16” |
| Seamless Rolled Rings | Forged | Carbon Steel, Stainless Steel, Aluminum | 1–165” |
| Square Hole Rings | Repair Couplers | Carbon Steel, Stainless Steel, Galvanized, Epoxy Coated | 3–32” |
| Fabricated Assemblies | Weldments, Pipe Spools, Valve Bodies, Silencer Housings | Carbon Steel, Stainless Steel | 2–24” |
| Long/Short Radius Elbows | EN 10253-2–S235, P235GH–P265GH–P265NL and ASTM A234, WPB, WPC/ A420 WPL6, WPL3/ A860 WPHY52/ ASTM A234 WP11, WP22, WP5, WP9–16Mo3 | 304L & 316L Stainless Steel | (45° & 90°): OD: 21.3mm (1/2”)–3048mm (120”) WT: Up to SCH. XXS/160 |
| Miscellaneous | Tubesheets / Diffuser Plates / Baffles / Ferrules / Sleeves / Pins | Carbon Steel, Stainless Steel, Duplex | 5–104” |
Who we are
API International is a manufacturer and wholesale distributor of flanges, expansion joints, valves, other pipe fittings and custom fabricated parts. We offer a wide variety of AIS & imported flanges along with other industrial pipe fitting and accessories. Customers turn to us when they need quick delivery of parts and are looking for a higher level of customer service. Standard parts are stocked in one of our conveniently located warehouses for quick distribution throughout the United States.
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