China National Standards

China hardenging GB Standards List

  •  China "hardenging" GB Standards List:
    • Standard  Code Standard Title Standard Class Order
    GB/T 35840.4-2020 Steels for plastic mould—Part 4: Pre-hardenging steel plate
    塑料模具钢 第4部分：预硬化钢板    		 China National Standards
    hardenging
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