... 1.Hot dipped zinc plated ,A / B grade. 2.Professional manufacturer Strict quality control Production Detailed Information1. Products NameZinc coated ... Test RequiredNominal Diameter,Torsion,wrapping, tensile strength, Thickness of zinc coated , Breaking force at 1% elongation10. Payment termT/T 30 ... after received the purchased order .Production line TestingPacking hot dipped zinc coated steel wire