Description
Flange coverInformation
Flange cover sealing face
Flat faces (FF), raised faces (RF), male and female faces, tongue and groove faces (TG), ring joint faces (RJ) , (Related reading: Table of Flange Sealing Types)
Production Materials for Flange cover
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；
Stainless steel: ASTM A182 F304, 304L, F316, 316L, 1Cr18Ni9Ti, 0Cr18Ni9Ti, 321, 18-8;
Alloy steel: ASTM A182 F1, F5a, F9, F11, F12, F22, F91, A182F12, A182F11, 16MnR, Cr5Mo, 12Cr1MoV, 15CrMo, 12Cr2Mo1, A335P22, St45.8/Ⅲ;
Applicable flange standards
HG20601-1997 of the Ministry of Chemical Industry, Amerian standard ANSI B16.5, HG20622-1997 of the Ministry of Chemical Industry, the Chinese standard GB/T9123.1-2000—GB/T9123.4-2000.
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