Gate Valve stem 2)4"API JIS Gate Valve 3)Checked by Go & ... supply the products as follows:1) Materials include: Stainless Steel, Carbon Steel, Alloy Steel, Ductile Iron, Grey Iron, Copper, Aluminum Bronze ... ) Standard: ASTM, BF,BS, JIS, UNI, ANSI, ISO etc.valve stem of 303 stainless steel4"API Gate ValveMaterial: Alloy Steel, Stainless ... can be made before packing. JIS API lengthening Gate Valve Stem