Product Name: EPDM Rubber Bellows Model NO.: DN25-3200 Connection: Flange Material: EPDM Trademark: XQ Transport Package: Wooden Case Specification: DN25-3200 Origin: China HS Code: 7307 Product Description rubber bellows expansion joints also named flexible rubber joints,they are composed of one rubber bellow and two flanges.there are twotypes of flexible rubber joints: floating flanged and rubber lined.there are many kinds of coating materials for the rubber bellows:EPDM,Hypalon(CSM),NR(Natural Rubber),NBR, SBR,Neoprene(Nitrilr rubber), VITON.Material of the flanges: CS, CS zinc plating, CS hot dipped galvanization. SS304, SS316, SS316L, SS321, SS310, SS904L, SS2205, SS2507Sizesrange from DN25-DN3200Design pressure: 10KG/CM2 16KG/CM2 20KG/CM2 25KG/CM2