China National Standards

China Specification size selection GB Standards List

  •  China "Specification size selection" GB Standards List:
    • Standard  Code Standard Title Standard Class Order
    GB/T 28708-2012 Specification for size selection of seamless and welded steel pipe used in piping engineering
    管道工程用无缝及焊接钢管尺寸选用规定    		 China National Standards
    Specification size selection
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