GB/T 13912 Metallic coatings—Hot dip galvanized coatings on fabricated iron and steel articles—Specifications and test methods*, 2020-06-02 Update
GB/T 191 Packaging.Pictorial marking for handling of goods
GB/T 2828.1-2003 Sampling procedures for inspection by attributes--Part 1: Sampling schemes indexed by acceptance quality limit(AQL) for lot-by-lot inspection
GB/T 4232 Stainless steel wire for cold heading and cold forging*, 2019-06-04 Update
GB/T 4354 Hot rolled quality carbon steel wire rods