... :1/2"-48" Material:carbon steel,stainless steel,alloy steel Flange 1). Type: WN Flange, SO Flange, RTJ Flange, ... 203, JPI 7S-15, GB9112~9124, SH3406 Material: Carbon steel, stainless steel, Alloy steel, Low-temperature steel. 5). Use: It has good welding performance, widely ... professional manufacturer, we can offer all kinds of the metal pipe fittings and can manufacture them according to any drawings ...