... Pressure Class 150Lbs, 300Lbs, 600Lbs, 900Lbs, 1500Lbs, 2500Lbs, /PN6,PN10,PN16,PN20,PN25,PN40/ Class A, B, C, ... B16.5, ASME B16.47, ASME B16.36,DIN 86341-2000, DIN2505material Carbon steel(ASTM A105, Q235, ... F22,F5,F9,F91,F1ECT)qualification ISO9001:2008 Quality Mangement System Certificate,ISO 14001 Environment Mangement System ... etcSpecial design available as the requirement of customer DIN 2533 flange