China National Standards

China Plastic check valves GB Standards List

  •  China "Plastic check valves" GB Standards List:
    • Standard  Code Standard Title Standard Class Order
    GB/T 44574-2024 Plastic check valves for pollution prevention of building drainage pipe systems {译}
    建筑排水管道系统防污染用塑料止回阀    		 China National Standards
    Plastic check valves
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