Coal tar enamelling: This material is based on coal tar pitch and has good water resistance, chemical structure stability, cathodic stripping resistance and high electrical resistance. However, the use of this material is declining in some places due to its construction complexity and environmental impact.
Cement Mortar: Cement mortar is a low-cost and widely used lining material that provides protection by forming a stable hydroxide film at the interface between the steel pipe and the cement mortar material. Cement mortar linings are easy to apply and inexpensive, but can develop drying cracks and may not perform well at high flow rates.
Liquid Epoxy: Liquid epoxy linings provide good corrosion resistance and chemical stability and are suitable for a variety of water treatments. This material is typically used in more demanding piping systems.
Fusion Bonded Epoxy (FBE): FBE is a high performance lining material used primarily for corrosion protection. It has good adhesion and chemical resistance.
Polyurethane (PU): Polyurethane is an elastomeric material commonly used for pipe lining and is popular for its excellent abrasion and chemical resistance.
Each of these coating and lining materials has its own advantages and limitations, and the selection should take into account the specific conditions of use and performance requirements.
