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See Chinese contents: GB/T 12755-2008 GB/T 12755-2008: Profiled steel sheet for building
This Standard specifies the classification, code, plate profile and structure requirements, cross section shape and size, technical requirements, quality inspection and tolerance, packaging, marking and quality certificate of various profiled steel sheet for building. This Standard is applicable to roll-forming profiled steel sheet for building on the continuous mode unit, including various shaping plate used for all parts of roof, wall face and floor cover.
