1.Standard---ANSI B16.5 FLANGES

2.Materia--- 1/ Carbon Steel   ASTM A105,20#,Q235,16Mn, ASTM A350 LF1, LF2 CL1/CL2, LF3 CL1/CL2,ASTM A694 F42, F46,F48, F50, F52, F56, F60, F65, F70

                   2/Stainess Steel   STM A182 F304,304L, F316,316L,1Cr18Ni9Ti,0Cr18Ni9Ti,321,18-8

                    3/Alloy Steel     ASTM A182 F1, F5a, F9, F11, F12, F22,

F91,A182F12  A182F11,16MnR,Cr5Mo,12Cr1MoV,15CrMo,12Cr2Mo1,A335P22,St45.8.

3.Sealing surface form--- RF,  FM,  TG,   RJ

4. PN,MPa---CL150,CL300,.CL400,CL600,CL900,CL1500