... B16.5,ASME B16.47,DIN,JIS,GB,BS etc.2)Material:Carbon steel,stainless steel,alloy steel etc.3)Packaging ... . API 5L X42 X52 X60 X70 ETC.SIZE:DN: 1/2-80(10MM-2000MM)PRESSURE:SCH20, SCH30, SCH 40, SCH50, SCH60 ... joint flange,carbon steel flangeAPPLICATION: petroleum, chemical, electrical industry, construction. RJ flange