
FASTENERS - PART 16: WASHERS - SECTION 8: PLAIN WASHERS FOR HIGH-STRENGTH STRUCTURAL BOLTING, HARDENED AND TEMPERED
出版:South African Bureau of Standards

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FASTENERS - PART 16: WASHERS - SECTION 8: PLAIN WASHERS FOR HIGH-STRENGTH STRUCTURAL BOLTING, HARDENED AND TEMPERED
出版:South African Bureau of Standards
专家解读视频