Product type: Socket welded flange SW, butt welded flange WN, flat welded flange SO, blind flange BL, loose flange LJ, threaded flange TH, orifice flange, hubbed butt welded flange
Size range: DN15 - DN1500 (1/2" - 60")
Manufacturing standard:
National standard GB/T14383、SH3410、HG21634