Spiral steel pipe anti-corrosion steel pipe manufacturer
Cangzhou Tianyuan Anti-corrosion Engineering Co., Ltd. Sales Hotline Manager Zhang
Steel pipe refers to anti-corrosion steel pipe, which is an externally wound three-layer polyethylene internal sintered epoxy anti-corrosion steel pipe. It inherits the advantages of traditional steel pipes such as high strength, strong integrity, good plasticity, ability to withstand high external and internal pressures, and good adaptability to the foundation. Compared with concrete pipes and ductile iron pipes, they are lighter in weight, easier to install, have fewer joints, and have no leakage. The thermally bonded epoxy resin coating on the inner wall has good adhesion, long durability and strong corrosion resistance, with a service life of more than 10 years. The inner wall is smooth, and the caliber can be reduced by one level to transport the same flow rate of media. The outer coating adopts high-pressure extrusion winding process. The layer is tough and wear-resistant, with excellent impact resistance and bending resistance. It can effectively prevent mechanical damage during construction and damage to plant roots and soil environmental stress during use. Anti-corrosion steel pipe
Spray out the plastic powder and apply suction. Use a vacuum pump to form a negative pressure in the tube, suck the plastic powder in and soak it. Store the plastic powder in a container, and immerse the preheated base tube in the powder for rotational molding. Plastic powder is stored on the wall of the base tube, and the base tube is rotated and rolled to evenly distribute the powder. Since the surface of the base pipe reaches a certain temperature, after the plastic powder reaches the pipe wall, it melts and is coated on the pipe wall to form a coating and an anti-corrosion layer. The tightness of the bond between the inner coating and the base pipe is related to many factors, such as the type of heating equipment, heating method, type of fuel, heating temperature, fineness of plastic powder, additive composition, etc., but the most critical thing is surface pretreatment. On the premise that the surface pretreatment reaches the standard, the comprehensive index is assessed by adhesion. Regarding the adhesion index in our country's standards, the original standard stipulated that it was on the low side. Now it has been raised to level 1 for polyethylene coating and epoxy resin coating. This standard Close to developed countries.
Spiral steel pipe TPEP anti-corrosion steel pipe manufacturer