There are more and more types of plastic-lined pipes on the market,and various plastic-lined pipes have different effects.What is the production process of plastic lined pipeline?

Plastic lined flanged pipes finished in Haihao Group

1. Cutting and Welding flanges for pipes or fittings according to the requirements of users.
2. Inspection of welded steel body which requires accurate size, smooth and full weld seam, after passing inspection, send products to sandblasting room for rust removal.
3. After sandblasting, the pipe body is coated with glue. The glue-lined pipe must be painted four times before the glue board can be pasted. Each layer of glue should be separated by more than 8 hours.
4. After the glue is coated, the production technology of lining pipeline in desulfurization system of power plant is tailored according to the pipe size. The temperature of the soldering iron should be strictly controlled when the thermal soldering method is used in the lining method, and it is generally appropriate to control the temperature between 100 and 200 degrees Celsius. When soldering glue, soldering iron should not stay on the rubber board, and soldering glue should start from the middle to drive out bubbles around. The bubbles should be punctured by needle in time when soldering glue, the gas should be shaken, and then compacted by soldering iron.
5. Before vulcanization, the lining equipment should be inspected and the problems should be dealt with in time. The vulcanization mode is selected according to the size of the equipment and the type of rubber lining. From the point of view of lining quality and economy, vulcanization of rubber lining should be considered first. Quality control of finished products should check the hardness of the adhesive layer and whether there is leakage in the lining layer by EDM. If so, it should be repaired.
6. After all the lining pipes are made, vulcanization can be carried out. The vulcanization temperature is controlled from 150 degrees to 180 degrees, and the pressure is controlled at 4 MPa. After 8 hours of continuous cooling, the temperature will be gradually cooled and cooled. After all the temperature drops down, polishing and inspection will be carried out. Only after the completion of the whole process can it be delivered to users.

Haihao Group manufacture and supply plastic-lined pipes and plastic-lined pipe fittings in high quality,we produce the pipeline products in different standards ANSI/ASME B16.5,B16.9,B16.28,B16.36,B16.47,ASTM A106,A53,A312,A333,A335,API 5L,API 5CT,EN 1092-1,AS,EN 10217,BS,DIN,EN 10219,JIS,GOST,MSS SP-44,MSS SP-43,MSS SP-75,UNI,SABS,etc.If you want to know more about our products,please feel free to contact us.Email:sales@haihaogroup.com