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OEM & ODM services for all kinds of pipe fittings.

Weld Neck Flanges
Our weld neck flanges provide superior structural integrity and stress distribution for high-pressure and high-temperature piping systems. Featuring a tapered hub design that transitions smoothly into the pipe wall, these stainless steel flanges minimize stress concentration at the weld joint. Manufactured in SS304, SS316L, and carbon/alloy steel grades, they comply with ANSI, GB, and DIN standards with PN16–PN40 ratings. Ideal for oil & gas, chemical, and power plant applications, each weld neck flange delivers reliable performance under cyclic loading and thermal expansion.
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SS Weld Neck Flange ANSI/GB/DIN Standard SS304/316L PN40
These are stainless steel weld neck (WN) flanges, featuring a long, tapered neck that integrates with the pipeline via butt welding. The neck design ensures uniform stress distribution, making them ideal for high-pressure, high-temperature, and corrosive environments. Widely used in oil & gas, chemical, pharmaceutical, and power industry pipelines requiring long-term reliability.
Always adhering to the principle of Quality First, Customer Foremost, we provide stable supply, competitive price and considerate after-sales service.
Tel/Wechat/WhatsApp: +86 13968858018
ADD: No 2399, 11th Road,2nd Street, Binhai Economic and Technological Development Zone, Wenzhou City, Zhejiang Province CHINA
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