WF face flangeI'd like to ask what flange form WF is,
2. flange according to material: cast iron flange, carbon steel flange, alloy steel flange, cast steel flange, copper flange, plastic flange and so onThe above supplement seems superfluous because you ask for the WF face flange, which clearly refers to the sealing surface type of the flange
written in WF flange?Supplement:1. flange connection points by welding, butt welding for (SO) (WN), socket welding (SW), (LJ), loose thread (PT).
The pattern of the flange sealing surface: plane (FF), sudden surface (RF), (MF), convex concave groove (TG) and ring junction (RJ). So far, there is no other form of sealing surface, is the concave and convex surface (MF) write backwards,
