ASTM A449-04b Specification for Hex Cap Screws, Bolts, and Studs, Steel, Heat Treated, 120-105-90 ks
标准简介
ASTM A449-04b Specification for Hex Cap Screws, Bolts, and Studs, Steel, Heat Treated, 120-105-90 ksi Minimum Tensile Strength, General Use
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