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📌 Flat Welded Ring Flange – High-Quality Forged Flanges for Global Industry


Release Time:

Sep 11,2025

What is a Flat Welded Ring Flange?

A Flat Welded Ring Flange is a type of pipe flange designed for efficient pipeline connections. It provides reliable sealing, easy welding, and excellent performance under moderate pressure. Compared with a Weld Neck Flange, it is easier to install and widely used in industrial applications.


Key Features of Flat Welded Ring Flanges

Manufactured from forged carbon steel, stainless steel, or alloy steel

Precision CNC machining for a smooth surface finish

Excellent pressure resistance and leak-proof sealing

Compliant with ANSI, DIN, JIS, and EN standards

Size range from DN15–DN2000

For other pipeline solutions, we also supply Slip-On Flanges and Blind Flanges, suitable for various projects.


Applications Across Industries

Flat welded ring flanges are widely used in:

Oil & Gas transmission pipelines

Petrochemical facilities

Shipbuilding projects

Water treatment systems

Power generation


Why Choose ENFI Pipe?

Certified by ABS, DNV, BV, CCS, LR, and NK

3.2 MTC (Material Test Certificate) & third-party inspection available

Automated CNC machining for consistent precision

Customized production based on drawings and requirements

Global delivery with professional export support


Contact Us

Looking for a trusted flange supplier?
Get a free quote today for Flat Welded Ring Flanges designed for your project.

📩 Email: sales@enfipipe.com
🌍 Website: www.enfipipe.com

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Aug 09,2026

NFI to Exhibit at Oil & Gas Asia 2026 (OGA 2026)

CANGZHOU NFI STEEL CO., LTD will participate in Oil & Gas Asia 2026 (OGA 2026) at Hall 8 – Booth 8706, showcasing its core range of flanges and fittings. NFI supplies products in Carbon Steel, Stainless Steel, Duplex Stainless Steel, and Nickel Alloys, with capabilities to support material traceability, inspection and testing, third-party inspection, and complete project documentation for major Oil & Gas, Offshore, FPSO, Refinery, Petrochemical, and EPC/EPCC projects. We look forward to meeting customers and partners from around the world at OGA 2026.

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Meet Us at OTC Asia 2026 – Connecting Global Energy Solutions

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316L 2.5Mo is increasingly chosen for its better corrosion resistance in chloride or marine environments. It offers a balanced mix of performance, cost, and availability while staying compatible with standard 316L fabrication and welding practices. Our recent PMI test confirmed Mo content at 2.48–2.53%, fully matching the MTC — reinforcing our commitment to consistent quality and material reliability.