China National Standards

China Unified numbering system GB Standards List

  •  China "Unified numbering system" GB Standards List:
    • Standard  Code Standard Title Standard Class Order
    GB/T 17616-2013 Unified numbering system for designation of iron,steel and alloy
    钢铁及合金牌号统一数字代号体系    		 China National Standards
    Unified numbering system
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