Defects of 3PE Coating

3 PE anticorrosive coating steel pipe body is straight tube by coating operations in the factory, set aside for section, and then to the field of welding, then fill with heat shrink sleeve or heat shrinkable belt, for the quality of the bent pipe is adopted more process was conducted with heat shrink wrapped belt with level 3 PE anticorrosion, but such anticorrosive technology defect is unable to mechanized assembly line construction, can only manual winding, time consuming, and the material cost is high, and the construction quality is has a great influence to the quality of the anticorrosive, quality control is difficult. At present some design units developed a new type of double plus anticorrosive epoxy anticorrosive technology of adhesive tape. This technology makes full use of the high temperature fusion bonded epoxy powder excellent anti-corrosion performance, and can be used mechanical spraying, plus the anticorrosion tape are low in cost, and thus formed since the outer wrapping of anticorrosion tape will can be used as a coating of outer protection structure, can effectively eliminate the two-layer epoxy powder coating thickness thin, easy to fall off and knocked off and let the failure of anticorrosive coating defects. Practical applications, the anticorrosion tape can choose the kinds of polyethylene tape and polypropylene fiber anticorrosive tape. Polyethylene anticorrosive tape good ductility, flexible and the polypropylene anti-corrosive tape of wear-resisting performance is higher, so the more choice tendency is the polypropylene fiber tape, due to its excellent mechanical strength. Of course, this process comprehensive anticorrosive properties especially anticorrosion layer strength than with hot wind belt slightly difference, the pipe during the construction of transportation and more easily bruised and broken, need further improvement.

If you would like to know more about coating carbon steel pipe,pls contact:Hunan Great Steel Pipe Co.,Ltd.