China National Standards

China Bimetallic Composite Steel GB Standards List

  •  China "Bimetallic Composite Steel" GB Standards List:
    • Standard  Code Standard Title Standard Class Order
    GB/T 31940-2025 Bimetallic Composite Steel Pipes for Fluid Transport {译}
    输送流体用双金属复合钢管    		 China National Standards
    Bimetallic Composite Steel
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