... kinds of flanges such as Welding Neck Flange, Slip on Flange, Threaded Flange, Socket Welding Flange, Blind Flange, Orifice Flange, Ring Joint Flanges, Long Welding Neck ... , Class2500 ; 6Bar, 10Bar, 16Bar, 25Bar, 40Bar PN2.5 TO PN40MATERIAL: Carbon Steel: ASTM A105, ASTM A350 LF1, LF2, CL1/CL2, LF3 ... ,260,300,350; NF FGL150,FGL200,FGL250,FGL300,FGL350; 3. Carbon steel: WCB, 450-240, 1.0619, GS-45, 1. ...