Plastic Coated Steel Pipe

Plastic Coated Steel Pipe,also known as steel-plastic composite pipe,is a high-performance composite pipe that takes steel pipe as the base and covers its inner and outer surfaces with a plastic anti-corrosion layer through professional processes such as spraying,hot dipping,or vacuum suction coating.It perfectly combines the high mechanical strength of steel pipes with the excellent corrosion resistance of plastic,making it a preferred choice in various industrial and civil fields.

The production process of this pipe is strictly standardized,starting with surface pretreatment which is crucial for coating adhesion.The steel pipe is first derusted by sandblasting or shot blasting to reach Sa2.5 level cleanliness,then degreased and preheated to 80-120℃to ensure the plastic coating adheres firmly.Common coating materials include polyethylene(PE)and epoxy resin(EP):PE is usually applied by hot dipping for thicker coatings,while EP is mainly used for internal and external spraying.

Plastic Coated Steel Pipe has outstanding advantages.It features excellent corrosion resistance,isolating steel from water,acids,alkalis and other corrosive media,with a service life of up to 50 years.It also has good electrical insulation,low water absorption and smooth inner walls,reducing fluid friction and avoiding scaling.The pipe is available in specifications from DN15 to DN1660,with a temperature range of-30℃to 120℃and a maximum pressure of 6MPa,adapting to diverse working conditions.

Its applications are extensive,including municipal water supply and drainage,building water systems,fire protection,chemical fluid transportation,cable protection and mining ventilation.It can replace traditional galvanized pipes,solving problems such as rust and pollution,and reducing maintenance costs significantly.With its environmental friendliness,durability and cost-effectiveness,it has become an indispensable piping solution in modern engineering projects.