... and production of copper valves, gas valves, cast steel valves, stainless steel valves, sanitary wares, water meters and various pipe fittings ... Aluminum/Stainless Steel Wavy Hose,F1/2"*F3/8" Technical Datas: 1.Brass Hexagon Nut,Nickle Plated.2.Brass Core3.Stainless Steel Wire. ... .Material: Copper or Stainless Steel7.Working Medium: Water,Plumbing,Air Condition8.Female Thread:ISO228/1,BSP,NPT etc. or ...