BS 7371-6-1998 金属紧固件涂层.热浸镀锌涂层的规范, Coatings on metal fasteners - Specification for hot dipped galvani
标准简介
BS 7371-6-1998 金属紧固件涂层.热浸镀锌涂层的规范, Coatings on metal fasteners - Specification for hot dipped galvanized coatings
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