Which standards do Cangrun pipe fittings and flanges comply with?

Butt-weld fittings are produced to JIS B2311/B2312/B2313, GB/T 12459, GB/T 13401, GB/T 10752, SH/T 3408, SY/T 0609 and HG/T 21635 in ASTM/ASME A234 and A403 materials. Flanges are supplied in American series Class 150 to Class 2500 and European series PN2.5 to PN400.

What is your manufacturing size range?

Seamless fittings from 1/2 to 24 inch (DN15–DN600), welded fittings from 4 to 78 inch (DN150–DN1900) with wall thickness up to 150 mm, and weld neck flanges up to 160 inch (DN4000).

Which materials are available?

Carbon steel ASTM/ASME A234 WPB, WPC and ST37; alloy steel ST52, 12CrMo, 15CrMo, WP1–WP12, WP11–WP22, WP5, WP91 and WP911; stainless steel ASTM/ASME A403 WP304, 304L, 304H, 304LN, 304N, 316, 316L and 316Ti.

Which flange facing types can you supply?

Flat Face (FF), Raised Face (RF), Groove (G), Male/Female (MFM) and Ring Type Joint (RJ), depending on flange type and pressure class.

Which industries use your products?

Electric power, petrochemical, chemical, pharmaceutical, boiler, heating and shipbuilding projects, supplied to contractors and distributors worldwide.

How can I receive a full product catalog?

Use the Request a Catalog page or contact our export team at Bryan@crpipes.com with your product, size, schedule, material and standard requirements.

Best Source Factory ANSI 150LB 1" 4 Inch JIS/DIN/ISO/BS Socket Welding SW SS304 Stainless Steel Forged Flange Factories, Pricelist

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Best Source Factory ANSI 150LB 1" 4 Inch JIS/DIN/ISO/BS Socket Welding SW SS304 Stainless Steel Forged Flange Factories, Pricelist

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Product Description

Product Specifications

Item Steel Flange

Standard ASME B16.5 / GB/T

Material Carbon Steel (Q235 / A105)

Function Pipe Connection & Fixing

Frequently Asked Questions

What manufacturing standards do these steel flanges adhere to?

Our steel flanges are manufactured in full compliance with international standards including ASME B16.5 and GB/T specifications, ensuring high compatibility and structural integrity.

What carbon steel grades are available for these flanges?

These flanges are available in high-grade carbon steel options, specifically Q235 for standard applications and ASTM A105 forged carbon steel for higher temperature and pressure requirements.

What is the primary function of a carbon steel flange?

The primary function of a steel flange is pipe connection and fixing, allowing two pipes, valves, or equipment components to be joined securely while offering easy access for cleaning, inspection, or modification.

Are ASME B16.5 carbon steel flanges suitable for high-pressure systems?

Yes, ASME B16.5 forged carbon steel flanges (such as A105) are designed to withstand elevated pressures and temperatures, making them suitable for demanding industrial piping systems.

How do I select between Q235 and A105 carbon steel materials?

A105 is recommended for high-pressure and critical industrial environments due to its forged steel properties, whereas Q235 offers a cost-effective solution for general, low-to-medium pressure structural piping applications.