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What does wn flange mean?

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What does wn flange mean? WN: Butt welding flange with neck; Butt welding flange with neck refers to a flange with a tapered neck and butt welding with the cylinder or pipeline. It is an integral flange. Due to the transition structure of the tapered neck and the butt welding connection, the strength and rigidity of the flange are strengthened, and the sealing performance is better than that of the flat welding flange.

 

The disadvantage is that it needs to be manufactured by forgings, which consumes a lot of materials and is expensive to manufacture. It is suitable for occasions with high pressure and temperature or high sealing requirements.

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