... -1 Flanges(3) Material: Carbon steel flanges ASTM A105, ASTM A350 LF1, LF2 CL1/CL2, LF3 CL1/CL2 ASTM A694 F42, F46, F48, F50, F52 ... /Pressure Reating: Sch10 , Sch20 , Sch30 , Sch STD , Sch40 , Sch60 , Sch XS , Sch80, Sch100,Sch120, Sch140 Sch160 , Sch XXS, Class 150, 300, 600, 900, 1500 ...