国外标准列表
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[国外标准] ASTM A182/A182M-05a Standard Specification for Forged or Rolled Alloy-Steel Pipe Flanges, Forged Fit
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[国外标准] ASTM A181/A181M-01 Standard Specification for Carbon Steel Forgings, for General-Purpose Piping
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[国外标准] ASTM A179/A179M-90a(2005) Standard Specification for Seamless Cold-Drawn Low-Carbon Steel Heat-Excha