NACE MR0175 / ISO 15156 Sour Service Certified

Pipe Fittings & Flanges for Oil & Gas Industry

ISO 9001:2015 certified manufacturer of high-pressure forged flanges, butt weld fittings, and heavy-wall alloy pipe fittings engineered for upstream, midstream, and downstream refinery operations.

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Client Proof & Supply Approvals

Trusted by major oil & gas EPCs and national petroleum corporations across India, UAE, Saudi Arabia, and USA.

ONGC Approved
HPCL & IOCL
L&T Energy
NRL & EIL Specs
ISO 9001:2015 Certified Mfg
Trusted Supplier ONGC • Tata • L&T • HPCL
MTC EN 10204 3.1 With Every Order
Quote in 30 Min Guaranteed Response

Piping Solutions Across Oil & Gas Value Chain

1. Upstream Offshore & Drilling

High-pressure Class 1500 to 2500 Weld Neck flanges, Spectacle Blinds, and Duplex/Super Duplex fittings resistant to sour gas (H2S) stress corrosion cracking.

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2. Midstream Pipeline Transmission

Seamless MSS SP-75 high-yield butt weld elbows, tees, and concentric/eccentric reducers engineered for long-distance oil and natural gas cross-country pipelines.

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3. Downstream Refinery & Petrochemical

Chrome Moly ASTM A335 P11/P22/P91 alloy steel pipes and ASTM A234 WP91 fittings for high-temperature hydrocracker and fluid catalytic cracking units.

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Strict Quality & Material Traceability

Every refinery shipment is supplied with EN 10204 3.1 or 3.2 Mill Test Certificates (MTC), NACE MR0175 / ISO 15156 sour service compliance, 100% PMI testing, and Hydrostatic test reports.

ASTM A105 / A105N
ASTM A182 F304L / F316L
ASTM A182 F51 / F53 Duplex
ASTM A350 LF2 Class 1

Need Sour-Service RFQ Quote?

Send us your project spec sheet or MTO list. We provide written factory quotes within 30 minutes.

Frequently Asked Questions (Oil & Gas Piping)

What standards govern oil & gas pipe fittings and flanges?

Oil & gas piping systems are designed to ASME B16.5 (flanges up to 24"), ASME B16.47 (large diameter flanges 26"-60"), ASME B16.9 (butt weld fittings), and ASME B16.11 (forged socket weld/threaded fittings).

What does NACE MR0175 sour service compliance mean?

NACE MR0175 / ISO 15156 restricts hardness levels and chemistry in metallic materials to prevent sulfide stress cracking (SSC) and hydrogen-induced cracking (HIC) in environments containing hydrogen sulfide (H2S).

Do you provide third-party inspection (TPI) like SGS or Bureau Veritas?

Yes, we regularly host TPI agencies (SGS, TUV, Bureau Veritas, DNV) for EN 10204 3.2 inspection witnessing on international oil & gas export orders.

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🏆 ISO 9001:2015
🤝 ONGC • Tata • L&T
📜 MTC 3.1 Provided
⚡ 30 Min Response