Internal & External Plastic Coated Steel Pipe

Internal&External PE Coated Steel Pipe is a high-performance steel-plastic composite pipe that takes high-quality steel pipe as the base material and covers both its inner and outer surfaces with a polyethylene(PE)coating through professional processes such as hot-dipping,spraying or extrusion.It integrates the superior mechanical strength,impact resistance and load-bearing capacity of steel pipes with the excellent corrosion resistance,wear resistance and non-toxicity of PE materials,making it a reliable and cost-effective piping solution in various industrial and civil applications.

The production process of Internal&External PE Coated Steel Pipe is strictly controlled to ensure the quality and adhesion of the PE coating on both inner and outer surfaces.First,the steel pipe undergoes strict surface pretreatment:it is derusted by sandblasting or shot blasting to reach Sa2.5 level cleanliness,then degreased and dried to remove oil,dust and moisture.After pretreatment,the steel pipe is preheated to a suitable temperature(usually 180-220℃)before the PE coating is applied—hot-dipping is the most common method for PE coating,which ensures a uniform,thick and firmly bonded coating on both inner and outer walls,with a thickness ranging from 0.5mm to 3mm.

Internal&External PE Coated Steel Pipe has remarkable advantages.Thanks to the full PE coating on both inner and outer surfaces,it has excellent corrosion resistance,effectively isolating the steel base from water,acids,alkalis,salts and other corrosive media,thus extending the service life to 30-50 years.Its inner wall is smooth and non-sticky,reducing fluid resistance and avoiding scaling,which improves transportation efficiency.The pipe is non-toxic and odorless,meeting the requirements of drinking water transportation.It also has good low-temperature resistance,being able to work stably at-40℃to 80℃,and can bear a maximum pressure of 6MPa,with specifications ranging from DN15 to DN1660 to adapt to different working conditions.

Its application scope is extremely wide,including municipal water supply and drainage,building water supply systems,rural water conservancy projects,chemical industry(for transporting non-corrosive fluids),oil and gas transportation,and agricultural irrigation.As a dual-coated composite pipe,it can replace traditional galvanized pipes and ordinary steel pipes,solving the problems of rust,corrosion and pollution,and greatly reducing maintenance costs.With its environmental protection,durability and easy installation,Internal&External PE Coated Steel Pipe has become an essential choice in modern piping projects.