国外标准列表
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[国外标准] BS 2A 57-1962 Specification for steel hexagonal-headed shear bolts (B.S.F. threads) for aircraft
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[国外标准] BS 2989-1992 Specification for continuously hot-dip zinc coated and iron-zinc alloy coated steel fla
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[国外标准] BS 2874-1986 Specification for copper and copper alloy rods and sections (other than forging stock)
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[国外标准] BS 2871-1-1971 Specification for copper and copper alloys. Tubes. Part 1 Copper tubes for water, gas