nickel and nickel alloy tube ASTM B/ASME SB 161,163,167 material:nickel 200,nickel 201,monel alloy 400,nickel alloy 600 nickel and nickel alloy tubespecification:ASTM B/ASME SB 161,163 ... ,167material:nickel 200,nickel 201,monel alloy 400,nickel alloy 600diameter ...