Carbon steel high quality J roofing bolt with Hex nut rubber washer

Materials：Stainless steel, carbon steelSurface Treatment：zinc platedStandard：unstandardMould：1.Depend on customer’s require to make the mould .before make the mould.2.We sent the mould design to customer approval first .Before move onto products.3.We sent samples to customer to confirm first.Confirmed sample：If the first sample is not satisfied customer . we will modify the mold until customer satisfied.4.QC：1. Materials are to be checked carefully before production.2.Strict processing quality control5.Application fields；Furniture hardware.electronic hardware.construction machinery parts.metal.