12 inch weld neck flange manufacturer

Durable Steel Options Decades of Craftsmanship

Our 35,000 m² tech-driven facility is powered by 40 years of precision engineering. Specialist in ASTM/EN fittings, flanges, and pipes since 1983.

## Quality Trusted worldwide Testing satisfies ISO 9001, CE, and GOST-R.

Oil, gas, and big infrastructure projects in difficult areas.

Sustainable, smart operations Automatic 100-meter painting lines and eco-friendly sandblasting enhance production and reduce waste.

We excel in high-volume production, producing over 30,052 tons annually with specialized logistics.

Excellent for large quantities, consistent quality, and fast international shipping.

Industry-grade parts that endure decades.

​​

​

Precision 12-inch weld neck flanges for

tough jobs For decades, JS FITTING has made sturdy 12 inch weld neck flanges. For oil & gas, chemical, and power production, our flanges excel in high-pressure, harsh temperature, and corrosive systems.

ASTM-tested 12-Inch Weld Neck Flanges in stainless, carbon, or alloy.

Uncompromising Engineering: CNC-machined to ASME B16.5/B16.47 requirements, with tolerances <0.5mm.

ISO 9001, API 6A, and PED certificates accompany every purchase.

Customized Solutions: Custom bolts, bores, coatings?

Accommodate.

Technical Features: 150-2500# Pressure Rating, meet system demands with raised, flat, or RTJ faces.

A shotblasted epoxy-galvanized coating that resists corrosion A 100% leak-test guarantee and 24/7 technical assistance save downtime and increase safety with our 12 inch weld neck flanges.

Working with a recognized manufacturer simplifies integration and offers value when replacing components or developing infrastructure.

Precision, compliance, and client-specific innovation are in every flange we make.