... can produce various copper mould tubes,including square copper tubes,rectangular copper tubes,round copper tubes,non-standard copper mould tubesCopper ... .083°C1.083°C1.078°C1.080°CCoefficient of thermal expansion at 20°C1,68 10-51,68 10-51,70 ... blank700-1016280-48080-140CuCrZr,CuAgNi-Co,Ni-Fe Deoxidized phosphorus Rectangular copper mould tubes