... joint 2.material:cast iron or ductile iron,stainless steel. 3.Pressure test:GB/T13927-92 large diameter dismantling ... jointmaterial:cast iron or ductile iron,stainless steel.Products: We can produce gate, check, penstock,foot and ... dismantling joint with the materials of ductile iron, carbon steel, , stainless steel, ,cast iron and other materials available to order. ...