China National Standards

China Test method macrostructure GB Standards List

  •  China "Test method macrostructure" GB Standards List:
    • Standard  Code Standard Title Standard Class Order
    GB/T 226-2015 Test method for macrostructure and defect of steel by etching
    钢的低倍组织及缺陷酸蚀检验法    		 China National Standards
    Test method macrostructure
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