Precautions for applying primer with polyethylene anticorrosive tape

Before using the polyethylene anticorrosive tape, it is necessary to apply the primer first to make the pipe surface intact and smooth, so that the anticorrosive tape is flat and tightly attached to the pipe. Therefore, the quality of the primer indirectly affects the anti-corrosion effect of the anti-corrosion tape. Therefore, the following editor will focus on some precautions when applying primer, so as to help everyone better use anti-corrosion tape.

　　 1. The primer must be mixed well.

　　2. Use a clean brush, roller brush or other machinery to apply evenly (without missing coating) on the clean, dry, and anti-corrosion work surface that has been treated.

　　3. If there is any missing coating, it needs to be repaired after the coating surface is dry. The solution is volatile during use. If it is too thick, add supporting thinners appropriately.

　　4. The primer applied on the steel pipe should have no defects such as missing coating, no bubbles, clots and sagging, and should form a uniform film. The thickness should be controlled within 30-35 microns. The welds should be painted carefully to prevent leakage.

　　 5. After the primer surface is dry, it is recommended to manually wind the polyethylene anticorrosive tape for 20 minutes before wrapping the tape. The winding time of the manual winding machine should be based on the non-stick wheels. (The primer can be wound in 30 minutes when the thickness of the primer is 30 microns). Special attention should be paid to the long surface drying time when the temperature is low or when the groove is constructed. Ensure the lower half of the steel pipe Surface dry.

6. After the primer is applied to the surface of the steel pipe, the time interval between the wrapping of the polyethylene anticorrosive tape should be controlled within 20 minutes to 1 hour. The surface of the primer should be dry, slightly sticky, and dust-free (large sand or high air humidity) It is not suitable for construction). If it exceeds 1 hour, repaint the primer before winding the tape.

　　7. When using primer, pay attention to safety, prevent splashing, and keep away from fire. After the primer is used, the remaining primer should be poured back into the original iron container and the container should be sealed to prevent the volatilization of the primer.

　　 8. The construction should be carried out under well-ventilated conditions (-5～+50°C), and the users should strengthen labor protection.

　　 9. It is forbidden to use it in the open air under rain, snow, fog, humidity over 85% and in a windy and sandy environment.

　　 10. It is strictly forbidden to approach fire and heat sources; fire and explosion-proof measures shall be taken.

If the anti-corrosion effect of the polyethylene anti-corrosion tape is to be fully utilized in the later use process, all the construction steps related to it must be carefully operated, so as to improve the construction quality of the anti-corrosion tape and reduce the damage to the anti-corrosion performance of the anti-corrosion tape due to construction errors. may.