... carbon steel pipe fitting flange 1.Size 3/8"-24" 2.Manufacture and exporter 3.ISO9001/2000 ANSI carbon steel pipe fitting flange name carbon steel flangeFaceRF, ... B16.47, ASME B16.36,DIN 86341-2000, DIN2505materialCarbon steel(ASTM A105,A181-60, Q235,A350LF2,A350LF3,),1.0402, ... standard material supplier of China National Offshore Oil Corporation and China Petroleum Pipline Bureau.It was recognized by ...