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杨博 发表于 2007-8-13 10:23:02

ASTM A 179/A 179M-90a Standard Specification for Seamless Cold-Drawn Low-Carbon

ASTM A 179/A 179M-90a Standard Specification for Seamless Cold-Drawn Low-Carbon Steel Heat-Exchanger and Condenser Tubes
ASTM A 179/A 179M-90a 低碳无缝钢管

[ 本帖最后由 tdragonfu 于 2008-2-26 18:26 编辑 ]

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