China National Standards

China Polyethylene coating buried GB Standards List

  •  China "Polyethylene coating buried" GB Standards List:
    • Standard  Code Standard Title Standard Class Order
    GB/T 23257-2017 Polyethylene coating for buried steel pipeline
    埋地钢质管道聚乙烯防腐层    		 China National Standards
    Polyethylene coating buried
    English PDF
    GB/T 23257-2009 Polyethylene coating for buried steel pipeline
    埋地钢质管道聚乙烯防腐层    		 China National Standards
    Polyethylene coating buried
    English PDF

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