... , Class1500, Class2500, Wnrf, Sorf, Blrf, Thrf, Swrf, Ljrf Carbon Steel FlangeDin2573 Pn6 Slip-On, Din2576 Pn10 Slip-On, Din2543 Pn16 ... F Carbon Steel FlangeAs2129 Table D, Table H, Table E Carbon Steel FlangeGost 12820-80, 12821-80 Table D, E, H Carbon Steel Flange ... AD-2000 certification. Inspection: Factory In-House Or Third Party Shape: Equal Usage: connecting pipe line and keep its leakproofness; ...