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). ... steel, Low-temperature steel. 5). Use: It has good welding performance, widely used in Petroleum, Chemical industry, Machinery, Electric power and so on ... in, pls don't hesitate to contact carbon steel flange