What does "flange WN150-25FM sch40" mean?
Flange WN150-25FM sch40 is a neck welding flange, nominal pressure is PN25, the sealing surface is concave, and Sch40 is flanged with the pipe wall thickness class.
This is a neck welding flange with a diameter of 150MM and a pressure of 25 kg. Sch40 is the thickness of the pipe wall and WN is the code for the welded flanges
This is the WN standard HG 20592-2009 standard flange which is concave piece butt welding, FM, 150 is the nominal diameter of 6 "25 PN25 pressure, SCH40 is the flange interface, the wall thickness of the steel pipe butt SCH40; please check with standard.
WN means neck welded flange;150 indicating nominal diameter of flange is 150mm,25 refers to the flange nominal pressure of 25LB (pounds), usually only the American system will use pounds to indicate nominal pressure;RF indicates that the sealing surface of the flange is concave in form of sealing surface,SCH40 indicates the thickness of the steel pipe with neck,Fill in the flange of the general neck welding neck and the loose ring flange of the welding ring. When filling out the specifications, the wall thickness of the pipe diameter shall be filled out.
