ASTM A 1004-1999确定用于冷成形的框架构件的金属被涂覆...
A1004/A1004M-99 Standard Practice for Establishing Conformance to the Minimum Expected Corrosion Characteristics of Metallic, Painted-Metallic, and Nonmetallic-Coated Steel Sheet Intended for Use as Cold Formed Framing Members
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