SS 347 Weld Neck Flanges (WNF) - High Pressure

SS 347 Weld Neck Flanges (WNF) are premium pipe forgings distinguished by their long, tapered hub that extends from the flange and matches the wall thickness of the connecting pipe. This design allows for a strong, reliable butt-weld connection, making them the preferred choice for **high-pressure, high-temperature**, and sub-zero service where joint integrity is paramount. The use of the **SS 347 material**, an austenitic stainless steel stabilized with **Niobium**, is critical. This stabilization effectively prevents the formation of chromium carbides in the weld Heat Affected Zone (HAZ), thereby eliminating the risk of **intergranular corrosion** when the flange is exposed to heat during welding or continuous service (**up to 870°C**). **Zeron Fasteners** manufactures these flanges in compliance with strict international standards, guaranteeing mechanical strength and long-term corrosion resistance in critical piping systems.

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