... ,DIN 2634,DIN 2636,and so on.Size Flange: 3 / 8 "~ 100" DN10 ~ DN2500 Pressure U.S. Series: CLASS 150, CLASS ... sealing surface type U.S. Series: Flat (FF), suddenly face (RF), groove (G), convex surface (MFM), ring joint face (RJ)Packing ... or wooden pallets or as per customer's requirement cl150 rf blind flanges