China National Standards

China Highway Pavement Grades GB Standards List

  •  China "Highway Pavement Grades" GB Standards List:
    • Standard  Code Standard Title Standard Class Order
    GB/T 920-2023 Highway Pavement Grades and Surface Type Codes {译}
    公路路面等级与面层类型代码    		 China National Standards
    Highway Pavement Grades
    English PDF

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