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Causes of foaming of anticorrosive tape and treatment methods

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Causes of foaming of anticorrosive tape and treatment methods

Release date:2017-11-13 Author: Click:

一分彩First, the surface of the steel pipe wound with anti-corrosion tape should be pretreated, and the quality should reach the st3 level specified in GB / T8923-1988. After the rust removal is completed, the primer is painted, and the surface of the steel pipe must be dry and dust-free. The primer should be stirred well in the container before use. The primer should be painted evenly, and no defects such as missing coating, clot and sagging should occur. The thickness should be greater than or equal to 30um. After the primer surface is dry, wind the cold wrap (the primer is painted to the Time is about 3-5 minutes). 2. The anti-corrosion tape should be tightened when it is wound, increase the tension, and exhaust the air between the tape and the pipe. The overlap length of the beginning and end of the tape should not be less than 1/4 of the pipe circumference, and not less than 100mm. When winding, the tape must not be twisted or wrinkled, and the end of the tape should be pressed to prevent it from lifting.

There are many reasons for foaming of polypropylene anticorrosive tape during construction. Knowing these can prevent foaming of anticorrosive tape:

The first is the foaming of the anticorrosive tape caused by the temperature difference between the steel pipe body and the polyethylene anticorrosive adhesive tape. During the incomplete rust removal process or when the wind and sand are strong, there are foreign objects on the surface of the pipe. If the primer is not wrapped with the adhesive tape after it is brushed, it will be wound the next day, that is, the popular primer will cause this phenomenon overnight. The anti-corrosion tape is irregularly wound, and evenly wound by hand to ensure that the adhesive tape is in a tight state. The tape is not tangled into the tube in the true sense, such as there is a gap, and it is truly bonded to the primer. The anticorrosive tape is not tightened when it is wound, and insufficient tension is also a reason.

Anticorrosive tape


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Suzhou Qiangjiang Pipeline Anticorrosive Material Co., Ltd.

Contact: Cheng Huiqiang

Contact : Li Cong
Telephone:0512-63982510 Mobile phone:13962536717

Mobile phone:13806256210

Fax:0512-63982520
Address: No. 333, Jinxian Road, Jinjiaba, Wujiang District, Suzhou, Jiangsu
Website:www.diendanthanhly.net

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