What Is A Steel-plastic Adapter And Where Is It Mainly Used?

May 16, 2026

Steel-plastic transition joints with anti-corrosion heat shrink sleeves are used for underground anti-corrosion protection and wall penetration protection of DN natural gas steel pipes. They are professionally designed for the anti-corrosion, sealing, wear resistance, and aesthetic requirements of weld seams in directly buried and overhead steel pipelines, as well as for the joints in steel-plastic transition sections. They can also be used for sealing and anti-corrosion of pipe slip flanges, insulating flanges, and clamp (locking) positions. They form a robust anti-corrosion body with good wear resistance, corrosion resistance, impact resistance, and excellent resistance to ultraviolet light and aging.

 

Double-fly heat shrink steel-plastic transition joints offer reliable connection characteristics, high pin strength, good sealing performance, strong adhesion, and stable welding performance.

 

High-pressure polyethylene (PE) steel-plastic transition joints are generally required when connecting high-pressure pipelines to low-pressure pipelines, and when plastic pipes enter households from courtyards.

 

High-pressure polyethylene (PE) pipes exhibit outstanding corrosion resistance, with a designed service life of up to 50 years. However, the seamless steel pipe end of the steel-plastic transition joint, which is used in conjunction with PE pipes, is made of steel, and its corrosion resistance is far inferior to that of PE pipes. Furthermore, since steel-plastic transition joints are mostly laid underground in damp conditions or exposed to air, their corrosion resistance requirements are extremely high.

 

Steel-plastic transition joint anti-corrosion heat shrink sleeves are used for underground corrosion protection and wall penetration protection of DN gas steel pipes. They are specifically designed for the corrosion protection, sealing, wear resistance, and aesthetic requirements of welded joints in buried and overhead steel pipes, as well as for the joints of steel-plastic transition sections. They can also be used for sealing and corrosion protection of pipe flange connections, insulating flanges, and clamp (locking) parts. They form a robust anti-corrosion body with good wear resistance, corrosion resistance, impact resistance, and good protection against direct sunlight and photo-aging.