Discussion on standard of B level steel wire for cotton packaging

To compare the differences and similarities of B level steel wire for cotton packaging in the following aspects such as tensile strength,percentage elongation after fracture,bending and galvanized coat between YB/T5033—2001 and GB/T21530—2008. According to the properties of low moisture content,big back bulging force in Xinjiang cotton,enterprise standard suitable for Xinjiang cotton production should be made. It is suggested that on the condition of assuring tensile strength and percentage elongation after fracture when making standard,bending index of steel wire should be improved possibly. Adopting thin zinc electroplating layer such as zinc coating mass no less than 25 g/m2,the anti-corrosion requirement can be satisfied. Non-standard package weight steel wire is permitted,and each pack steel wire consists one wire. The tensile strength upper limited of steel wire should be controlled. And the tensile strength deviation of same pack steel wire should be small possibly.