... joint co stainless steel flexible pipe joint coupling1. specification:1/8'' - 4''2. material: AISI 304, 3163. widely used in hose connectingQiancheng Stainless Steel Products Co ... wax-molding fine technique, could produce all kinds of stainless steel and carbon steel pipe fittings,including couplings, nipples, valves, elbows, tees, crosses ...