China National Standards

China Thermoplastic pipework underground GB Standards List

  •  China "Thermoplastic pipework underground" GB Standards List:
    • Standard  Code Standard Title Standard Class Order
    GB/T 39997-2021 Thermoplastic pipework for underground installation at petrol filling stations
    加油站埋地用热塑性塑料复合管道系统    		 China National Standards
    Thermoplastic pipework underground
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