... copper bars 1.Technique:Rolled and extrude 2.Standard: GB/T12769-2003 1.Reference standard GB/T 12769-20032.Specification variety range:3 ... , anaerobic TU1 TU2, aluminum, copper AL etc.4.The clad material: titanium Ti, zirconium Zr, Ni Ni, stainless steel (304, 316L ... Φ (8 ~ 50)9.Square model revised (10 ~ 30)10.Silk material Φ (2.0 ~ 8.0)Another may be based on customer ...