... ,JIS,BS standard 4,Pipes pipe fittings & flanges 5Carbon steel and stainless steel Carbon Steel & Stainless Steel Flanges according to ASTM, DIN, JIS, BS standard, ... female ,Large tongue & Groove,Small tongue& Groove Materials:Carbon Steel Materials:ASTM A105-ASTM A350 LF2/ASTM A694 F42-F52 ... F65-F70/C22.8/C21/Rst37.2/S235JRG2/P355NH/SS400Stainless Steel Materials:ASTM A 182 F304/304L/304H-ASTM A182 ...