Lap welded steel flanges are corrosion resistant 

The unit of pressure in the standard is "bar". (1bar=0.98kgf/cm2, 1bar=0.1MPa). The unit of dimension is "mm".Flat Face Flange       Material     Carbon steel ASTM A105, A350 LF1, LF2, LF3, LF6, CL1/CL2,; A694 F52, F60, F65, F70; A516 Gr. 60, 70; BS-EN 10222-2 P245GH, P280GH; EN10222-4 P355NH, P355QH; EN10273 P250GH, P265GH; DIN 17243 C22.8; VD-TUEV350/3 C21; GB/T 1591 Q345B, Q420B; NB/T 47008 16Mn,20#; BS 10250-2 S235JRG2;   Stainless steel ASTM A182 F304/304L, F316/316L, F316H, F304H, F321H, F310, F316Ti; NB/T 47010 S30403, S30408, S31603, S31608, S32168; BS-EN 10222-5 1.4301, 1.4307, 1.4404, 1.4541, 1.4571;…

Tongue And Groove Face Flanges Raised Face Flange Flat Face Flange Blind Flange Butterfly Valve Flange