NACE Flanges are specially manufactured piping components designed for use in corrosive and sour service environments where hydrogen sulfide (H₂S) is present. Produced in compliance with NACE MR0175 / ISO 15156 standards, these flanges provide exceptional resistance to sulfide stress cracking, corrosion, and material degradation. Gopal Forge Industries™ manufactures premium-quality NACE Flanges that are widely used in oil & gas, petrochemical, offshore, refinery, and process industries where reliability and safety are critical.
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Gopal Forge Industries™ is recognized among trusted NACE Flanges manufacturers delivering precision-engineered products for demanding industrial applications. Our manufacturing processes follow strict quality standards to ensure compliance with NACE requirements and international specifications. Every flange is produced using carefully selected raw materials and advanced machining techniques to provide superior performance in aggressive service conditions.
As established NACE Flanges exporters, Gopal Forge Industries™ supplies corrosion-resistant flange solutions to customers worldwide. Our export team manages documentation, traceability records, inspection certificates, and secure packaging to ensure seamless international deliveries. Through our global supply capabilities, clients receive products that meet stringent project and regulatory requirements.
Gopal Forge Industries™ has earned a strong reputation among dependable NACE Flanges suppliers by offering a broad range of material grades, pressure ratings, and flange configurations. Our engineering professionals assist customers in selecting suitable NACE-compliant products based on operating temperatures, fluid composition, and environmental conditions. This technical support helps improve plant reliability and long-term operational efficiency.
As reliable NACE Flanges stockists, we maintain extensive inventories to support urgent maintenance requirements, shutdown projects, and large-scale industrial installations. Our stock includes carbon steel, stainless steel, duplex steel, super duplex steel, alloy steel, and nickel alloy NACE Flanges manufactured to meet sour service requirements. Ready stock availability enables faster deliveries and reduced project lead times.
Among leading NACE Flanges manufacturers, Gopal Forge Industries™ continuously invests in advanced quality assurance systems and testing procedures. Each flange undergoes material verification, dimensional inspection, hardness testing, and compliance checks to ensure adherence to NACE MR0175 standards. This commitment to quality helps customers achieve safer and more reliable piping operations.
Being professional NACE Flanges suppliers, we provide complete industrial piping solutions alongside our flange range. Our product portfolio includes pipe fittings, buttweld fittings, carbon steel elbow, stainless steel elbow, forged fittings, reducers, tees, valves, and other industrial piping solutions. This comprehensive offering allows customers to source compatible piping components from a single experienced supplier.
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Nace Flanges Specification
| Specification |
Details |
| Product Name |
NACE Flanges |
| Technical Description |
NACE-compliant flanges designed for sour-service environments containing hydrogen sulfide (H₂S), manufactured according to applicable NACE MR0175 / ISO 15156 requirements for material selection, hardness control, heat treatment, testing and documentation. |
| Available Sizes |
1/2" NB to 60" NB, depending on flange type, pressure class, standard and material |
| Standards |
ASME B16.5, ASME B16.47, API 6A, MSS SP-44, EN 1092-1, BS 4504 and applicable DIN standards |
| Material Grades |
Carbon Steel: ASTM A105N, ASTM A350 LF2, ASTM A694 F52/F60/F65/F70; Stainless Steel: ASTM A182 F304L, F316L, F321, F347, F904L; Duplex: ASTM A182 F51/F60; Super Duplex: ASTM A182 F53/F55; Nickel Alloys: Inconel 625, Inconel 825, Monel 400, Hastelloy C276, Alloy 20 |
| Pressure Ratings |
ASME Class 150, 300, 600, 900, 1500 and 2500; PN6, PN10, PN16, PN25, PN40, PN64, PN100 and PN160 |
| Dimensions |
Manufactured according to applicable dimensional standards including ASME B16.5, ASME B16.47, API 6A, EN 1092-1 and MSS SP-44. Dimensions vary according to nominal size, flange type, pressure class, facing and applicable standard. |
| Applications |
Oil & Gas, Sour-Service Pipelines, Refineries, Petrochemical Plants, Chemical Processing Facilities, Offshore Platforms, Wellhead and Production Equipment |
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FAQ's
NACE Flanges are flanges manufactured and selected for applications where
resistance to sulfide stress cracking and other forms of corrosion associated with
sour service is required. They are commonly used in oil and gas, petrochemical,
and other environments containing hydrogen sulfide (H2S).
Common NACE flange types include:
- NACE Weld Neck Flanges
- NACE Slip On Flanges
- NACE Blind Flanges
- NACE Socket Weld Flanges
- NACE Threaded Flanges
- NACE Lap Joint Flanges
- NACE RTJ Flanges
NACE Flanges are commonly manufactured or specified in accordance with applicable
NACE MR0175 / ISO 15156 requirements for materials used in
sour-service environments. Flange dimensions and pressure ratings may also follow
standards such as ASME B16.5 or ASME B16.47, depending on the flange size and application.
Common materials used for NACE-compliant flanges include:
- Carbon Steel
- Low Alloy Steel
- Stainless Steel
- Duplex Stainless Steel
- Nickel Alloys
Material selection depends on the sour-service conditions, pressure, temperature,
corrosion environment, and applicable material requirements.
NACE Flanges are commonly used in oil and gas, petrochemical, refineries,
natural gas processing, chemical processing, and other sour-service applications.
They are particularly suitable for piping and equipment exposed to environments
containing hydrogen sulfide (H2S), where resistance to sulfide-related
cracking and corrosion is important.
Application of Nace Flanges
Latest Price List of Nace Flanges
The latest market pricing for NACE Flanges depends on material grade, NACE compliance requirements, flange dimensions, pressure ratings, inspection standards, and raw material market conditions. Carbon steel NACE Flanges are generally available in a moderate industrial pricing range, while duplex steel, super duplex steel, stainless steel, and nickel alloy variants are priced higher due to enhanced corrosion resistance and specialized manufacturing requirements. Gopal Forge Industries™ offers competitive market-based pricing and customized quotations for EPC contractors, oil & gas projects, refineries, and bulk procurement needs.
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