Lined tubing is a kind of tubing with a layer of special material lined inside the ordinary tubing. The following is a detailed introduction about it:
Common type
Fiberglass lined tubing 1: The pultruded molding process or direct adhesion process manufacturing, with high pressure molding, high density, good air tightness characteristics, can resist CO, H₂S, HF corrosion, the internal surface is smooth, can effectively shield polar scale crystal ion and metal bond between electrostatic dipole moment, but also has good thermal insulation performance, can delay the crystallization rate of scale ions.
UHMWPE lined tubing 2: Ultra high molecular weight polyethylene (UHMWPE) as the lining material, lining UHMWPE is in steel ordinary tubing lined with a layer of ultra high molecular weight polyethylene pipe, through the technology to make the liner and tubing close to form a “tube in the tube” structure. It has excellent wear resistance, corrosion resistance, self-lubrication, non-viscosity, high impact resistance, weather resistance and aging resistance and wide temperature resistance.
HDPE lined tubing 3: HDPE is often used as a pipeline anti-corrosion layer, the use of HDPE lined tubing in oil Wells is to avoid the wear of the rod and the inner wall of the tubing and the internal corrosion of the tubing. The lining surface is smooth and flexible, which can avoid direct friction between the rod and the inner wall of the tubing, reduce the wear amount of the rod, and reduce the failure caused by the corrosion of the inner wall of the tubing.
