GB/T 13912-2020金属覆盖层钢铁制件热浸镀锌层技术要求及试验方法标准
英文:Metallic coatings—Hot dip galvanized coatings on fabricated iron and steel articles—Specifications and test methods G...
英文:Metallic coatings—Hot dip galvanized coatings on fabricated iron and steel articles—Specifications and test methods G...