... /2"-48" Material:Q235 A105 A304 STD SCH20-SCH160 steel forged BLIND flange1). Type: WN Flange, SO Flange, RTJ Flange, BL Flange ... , JPI 7S-15, GB9112~9124, SH3406 Material: Carbon steel, stainless steel, Alloy steel, Low-temperature steel. 5). Use: It has good welding performance, widely ... you are interested in, pls don't hesitate to contact steel forged BLIND flange