China National Standards

China SAWL steel pipe GB Standards List

  •  China "SAWL steel pipe" GB Standards List:
    • Standard  Code Standard Title Standard Class Order
    GB/T 31937-2015 SAWL steel pipe for pipeline of coal slurry
    煤浆输送用直缝埋弧焊钢管    		 China National Standards
    SAWL steel pipe
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