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| 3PE mainly means the pipeline has three PE layer：The first layer is FBE（FBE＞80um），the second layer is AD（170～250um）,the third layer is PE(1.8～3.7mm,the color of PE is black at most time, it can also be blue or yellow color which depends on customer’s request.）。 2PE means the pipeline only have the second and the third layer. The first layer is AD,the second is PE Three material mixed together, combined firmly with the steel pipe and become excellent anticorrosive coating, which can be used in 70°C degree environment Standards: SY/T0413-2002，GB/T23257-2009，DIN30670 etc. The min thickness of coating can refer to the standard. 3PE produce process as follows: |
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