ASTM A105/A105N .A350 LF1, LF2 CL1/CL2, LF3 CL1/CL2

 A694 F42, F46, F48, F50, F52, F56, F60, F65, F70

 A516.60, 65, 70 (Spectacle Blind Flange, Spacer Ring/Spade Flange   Wind tower flanges )Steel RST37.2, C22.8

STINLESS STEEL FOR FLANGES :

ASTM A182 F304/304L, F316/316L, F316H, F316TI, F310, F321;

Alloy Steel: ASTM A182 F1, F5, F9, F11, F22, F91

Duplex & Super Duplext Steel: ASTM A182 F51/UNS S31803, A182 F53/UNS S32750