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See Chinese contents: Q/BQB 494-2014 Q/BQB 494-2014: Cold Rolled Strip for Welded Pipe
This Technical Conditions specifies the classification and code, dimension, shape, weight, technical requirements, inspection and test, packaging, marking and quality certificate of cold-rolled steel strips for welded pipes. This Technical Conditions applies to the cold-rolled steel strips for welded pipes produced by Baoshan Iron and Steel Co., Ltd.
