What do butt welding flanges WN300-150, RF, Sch40s mean?
Butt welding flange WN300-150, RF, Sch40s mean:WN means neck welded flange;300 indicating nominal diameter of flange is 300mm,150 refers to the flange nominal pressure of 150LB (pounds), usually only the American system will use pounds to indicate nominal pressure;RF indicates that the sealing surface of the flange is in the form of a common face seal,SCH40 indicates the thickness of the steel pipe with neck. The neck flange and the welding ring and loose flange of the general neck should be filled in the specifications and the wall thickness of the pipe diameter should be filled out.
WN said neck flange; 300 said flange nominal diameter 300mm, the 150 refers to the nominal pressure flange is 150LB (pounds) system will usually only America in pounds nominal pressure; RF said flange sealing surface for ordinary raised face seal, SCH40 pipe wall thickness grade with neck, usually with a welding neck flange and butt welding ring flanges complete specifications are required to fill in the pipe wall thickness.
WN said neck flange; 300 said flange nominal diameter 300mm, the 150 refers to the nominal pressure flange is 150LB (pounds) system will usually only America in pounds nominal pressure; RF said flange sealing surface for ordinary raised face seal, SCH40 pipe wall thickness grade with neck, usually with a welding neck flange and butt welding ring flanges complete specifications are required to fill in the pipe wall thickness.
