... steel,stainless steel,alloy steel Flange 1). Type: WN Flange, SO Flange, RTJ Flange, BL Flange, LJ Flange, SW Flange, Thread Flange 2). Diameter range: ... Petroleum, Chemical industry, Machinery, Electric power and so on pipe joint. 6). Special design available As a professional manufacturer ... , we can offer all kinds of the metal pipe fittings and can manufacture them according to any drawings ...