... so on.Size Flange: 3 / 8 "~ 100" DN10 ~ DN2500 Pressure U.S. Series: CLASS 150, CLASS 300, CLASS 400, CLASS 600, CLASS ... , PN 250, PN 320, PN 400 Flange sealing surface type U.S. Series: Flat (FF), suddenly face (RF), groove (G), convex surface ... )Packing:wooden cases or wooden pallets or as per customer's requirement ss400 jis 10k blind flange