What do butt welding flanges WN300-150, RF, Sch40 mean?
WN said neck flange; 300 said flange nominal diameter DN300 welding diameter of 325MM, 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 said steel tube wall thickness, the thickness is 10.31MM general welding neck flange with ring loose flange complete specifications are required to fill in the pipe wall thickness.
WN neck welding flange, bore 300mm, pressure 150 psi, pipe No. 40, standard pipe number, used to determine the inner hole of flange.
WN weld neck flange DN300 said 300 dimensions; 150 is the pressure of 150 pounds; RF is the flange face form process surface RAISE sch40 refers to FACE; and steel pipe wall thickness; flange specific data can be found in the ASME B16.5, SCH40 B36.10 or ANSI reference wall thickness is ANSI B36.19
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.
