HDPE inner coated tubing typically refers to tubing where the inner surface is coated with a layer of High-Density Polyethylene (HDPE).
Applications Of HDPE/EXPE Tubing:
HDPE inner coated tubing finds applications in industries where corrosion resistance, chemical resistance, and durability are essential. Common applications include:
Oil production wells: suitable for oil wells with serious eccentric wear and corrosion of oil pipes, high sucker rod failure rate, and scaling;
Corrosive gas wells: resistant to H2S and CO2 gas corrosion;
Water injection well: suitable for water injection wells with serious corrosion and scaling;
Old pipe repair: Reduce oil production costs while increasing service life;
Transmission pipe: Old oil pipes with severe corrosion and eccentric wear that are not suitable for underground use can be used as oil delivery pipes after being lined.
Manufacturing Process:
The manufacturing process involves applying a layer of HDPE to the inner surface of the tubing. This coating can be applied through various methods, such as extrusion coating or lining.
Through the special process of cold rolling and diameter reduction, it is pulled and penetrated into the inner cavity of ordinary oil pipes, and then placed naturally or boiled at 70°C to expand the liner, thereby completely filling the annular gap between the oil pipe and the liner to form an interference connection.
HDPE tubing /HDPE liner can be finished with flange on both end.
Performance Of Lining Materials:
Increase molecular weight: 0.94~0.97g/cm3
Vicat softening temperature: ≧130 ℃
Notched impact strength of simply supported beams: ≧50KJ/m2
Tensile yield strength: ≧20MPa
Shore hardness: ≧65HD
Tensile elongation at break: ≧400%
Advantages:
Corrosion resistance.
Chemical resistance.
Reduced friction for improved fluid flow.
Enhanced durability.
Drawing Of HDPE/EXPE Lining Tubing
