Contact: Cheng Huiqiang
Address：No. 333, Jinxian Road, Jinjiaba, FENHU Town, Wujiang District, Suzhou City, Jiangsu Province
Winding method for cold-wrapped tape of gas pipeline
1. The temperature when the tape is unrolled is above 5 ℃, and the construction of the anticorrosive layer should be performed above -5 ℃. (Experience proves that the tape can be applied at a lower temperature of -30 ° C, but the unwinding temperature must be guaranteed.) When the ambient temperature is lower than 10 ° C, in order to ensure that the tape has good bonding strength immediately, it should be used The torch heats the adhesive layer of the steel pipe and baking tape.
一分彩2. For the weld, if necessary, it should be reinforced with a narrow strip of tape with a width of 30-50 mm. Cover the weld first and compact it with a hand or a wooden smooth tool.
一分彩3. Use appropriate mechanical or manual tools to spirally wrap the tape on the primed pipe according to the overlap requirements. The tape should maintain a certain tension to make the tape layers tightly connected. When winding the tape, the edges of the tape should be parallel, and the wrinkles must not be twisted. There should be more than 100 millimeters of overlap between the two ends of the tape. If necessary, apply primer or fully bake the end base film of the previous section of tape. After the surface is dry, overlap the beginning of the other section of tape. The beginning and end should be pressed tightly with a wooden smooth tool to prevent it from tilting.
4.The use of machinery is a powerful measure to ensure the quality of tape winding.It is difficult for hand-wound tape to achieve uniform surface quality and consistent tension. Manual winding can only be used when mechanical construction cannot be performed under special circumstances. However, use narrower tape.
一分彩5.In the factory prefabricated wrapping, cold or hot wrapping can be used.It can be pipe rotation (manual rotation or electric rotation) or winding equipment rotation.The welding end of the pipe should be reserved for 150-200 mm. .
6. Prefabricated anti-corrosion pipes shall be subject to quality inspection in accordance with the requirements of this Standard 8. After passing the inspection, the factory shall be provided with a certificate of delivery.
一分彩7. When using aluminum foil tape for anticorrosion of overhead spanning pipelines or household risers, they shall meet the relevant construction requirements in this specification, but electric spark detection testing is not required.
8. Bezier Plastics recommends: Use narrow-width tape as much as possible for the anti-corrosion tapes used for repairing mouths, elbows, and through walls, and refer to the relevant provisions in this specification for construction and testing.
9. For pipelines with overhaul of anticorrosive coatings, rotatable winding equipment should be used for construction at the construction site, and construction and testing should be performed in accordance with the relevant provisions in this code.
Contact: Cheng Huiqiang
|Contact : Li Cong|
|Address: No. 333, Jinxian Road, Jinjiaba, Wujiang District, Suzhou, Jiangsu|