carbon steel flange Size:1/2"-48" Material:carbon steel,stainless steel,alloy steel Flange 1). Type: WN Flange, SO Flange, ... RTJ Flange, BL Flange, LJ Flange, SW Flange, Thread Flange 2 ... JPI 7S-15, GB9112~9124, SH3406 Material: Carbon steel, stainless steel, Alloy steel, Low-temperature steel. 5). Use: It has good welding ...