China National Standards

China Spheroidite examination grading GB Standards List

  •  China "Spheroidite examination grading" GB Standards List:
    • Standard  Code Standard Title Standard Class Order
    GB/T 38770-2020 Spheroidite examination and grading for low and medium carbon steels
    低、中碳钢球化组织检验及评级    		 China National Standards
    Spheroidite examination grading
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