copper line

Range of specifications:side a2.50mm-14.00mmside b30.00mm-95.00mmR1.2.3≥0.20mmadopted standard: GB5585.2 or OGT628.000Main technical parameters Item technical requirements testing methods Material The copper ingots conform to GB/T486-97,using hydraulic pressing process to get dense material quality,uniform;no shrinkage ends;no air bubles,no extraneous impurities &defects and so on . GB/T5121.1YB732-71 or no damage resistivity type resistivityGB/T3048.2TPWR TPWY≥0.01724 ≥0.01754 mechanical ability type tensile strength enlongationGB4909.3TPWR TPWY≥206≥35≥250≥7 Hardness type hardness HBSGB4909.8TPWY≥65 Bending fullfil the need in item 5.3 table 4 of GBT5585.2GB4909.6 Dimension and tolerance fullfil the need of OGT501000 and the demand of drawingsGB4909.2 straightness fullfil the nees in item 11 of GBT5584.2 or agreementsGB4902.2 Surface condition fullfil the need in item 12 of GBT5585.1 and item 6 of OGT628000 normal vision inspection