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Polyethylene tape in the water supply steel pipe anticorrosion experiment

by:Yourijiu     2021-02-03





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in the buried tube, through the tunnel and bridge three kinds of typical working conditions, can through the test, to explore a kind of don't need to live in polyethylene tape of asphalt, construction is convenient, the possibility of tap water pipeline corrosion on application.



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the results show that the construction of appropriate polyethylene tape coating, fully applicable to tap water pipeline corrosion protection, in the process of the whole test, anticorrosive coating peel strength stability in standard requires 18 n/CM, mechanical winding up to 40 n/CM; No mechanical damage anticorrosive coating surface, always under 8 kv voltage without breakdown phenomenon, of good electricity insulativity, shows the polyethylene tape anticorrosive performance is stable.



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at present widely used in many areas outside the pipe anticorrosion winding glass cloth of epoxy coal pitch. Its construction technology is relatively mature, anti-corrosion effect basic meets the requirement of cost can also be accepted. Achilles' heel is construction process is too complex, often need to clean the clean the pipe outside surface coating a layer of primer, epoxy coal asphalt four layers, bind up two layers of glass cloth, each layer should be according to the standard uniform coating, air-dried, fully experience before and after the seven working procedure. Asphalt coating also need to boil the system, operation conditions, even if the factory focusing on pipe construction for prevention of corrosion, the quality is still greater instability. Winding glass cloth of epoxy coal pitch anti-corrosion construction technology of complex, bring inconvenience to site construction, the construction is also difficult to control and quality assurance.



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so looking for a kind of operation is more convenient, environmental protection, more convenient and efficient construction pipe outside surface anti-corrosion technology, in order to improve the construction of large pipeline efficiency and coating quality is more important. Polyethylene tape is a new kind of anticorrosive materials, but polyethylene tape large-scale application in water supply steel pipe anticorrosion the feasibility, reliability, and the actual effect of the need for demonstration and testing.

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