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Key Words:3-layer PE;property requirements;GB/T 23257-2009;ISO 21809-1:2011
Abstract:In order to meet the needs of foreign projects and better use of 3-layer PE coating of domestic and international standards .In a comparative way on three layer PE coating of Chinese standard GB/T23257-2009 and the international standard ISO21809-1:2011 in the coating thickness, material properties, coating performance indicators and other aspects comparative analysis. Generally speaking, Chinese standard GB/T23257-2009 on material performance requires a more detailed and strict, i.e. the supplier of raw material, coating plant requirements more stringent, more conducive to the control of coating quality, more in line with China. For foreign projects, called for the implementation of international standards ISO21809-1:2011, but in China the production of 3-layer PE coating, they need to pay attention to ISO21809-1:2011and GB/T23257-2009 difference.
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