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聚乙烯(PE)管适用于天然气等燃气管道,其耐腐蚀、密封性、韧性和挠性、抗刮痕能力、抵抗快速裂纹传递能力、均优于传统的铸铁管、钢管,且安装施工方便、卫生环保、使用寿命长,所以PE管应用发展迅速。在监检中发现一些PE管壁厚不符合要求,有的壁厚过大、有的壁厚过小,这些壁厚不均匀的PE管一方面给热熔连接或电熔连接的焊接质量带来不利影响,另一方面也影响了PE管的承压能力,埋地使用后一旦出现泄漏不易处理。而埋地使用的PE管一般要求寿命为50年,燃气管道大多作为城镇公用管道,一
Polyethylene (PE) pipe is suitable for natural gas and other gas pipelines. Its corrosion resistance, tightness, toughness and flexibility, scratch resistance and resistance to rapid crack propagation are superior to the traditional cast iron pipe and steel pipe, and the installation and construction is convenient , Health and environmental protection, long life, so the rapid development of PE pipe applications. In the inspection found that some PE pipe wall thickness does not meet the requirements, and some wall thickness is too large, and some wall thickness is too small, the uneven thickness of the PE pipe on the one hand to the hot melt connection or welding quality welding zone To adversely affect the other hand, has also affected the pressure-bearing capacity of PE pipe, buried in the event of a leak once it is not easy to handle. The buried pipe commonly used life expectancy of 50 years, most of the gas pipelines as urban public pipe, a