Wear-resistant conveying pipelines are a new generation of polymer composite conveying pipes with epoxy glass fiber reinforced plastic pipes as the outer structural layer and polyurethane elastomer as the inner wear-resistant layer. They are wear-resistant, corrosion-resistant and pressure-resistant. The outer wall epoxy fiberglass structural layer can bear the pressure inside the pipe and resist external corrosion; the inner polyurethane elastomer layer is an anti-wear and corrosion-resistant layer, which is firmly bonded to the outer wall fiberglass through unique interface treatment, pouring and flanging processes. inner surface of the layer.

　　1. Product performance: It combines the advantages of fiberglass and polyurethane materials and has excellent comprehensive properties such as wear resistance, acid resistance, alkali resistance, anti-scaling, radiation resistance, hydrolysis aging resistance, high elasticity, and mechanical impact resistance.

　　1. Excellent corrosion resistance and outstanding wear resistance:

　　The outer structural layer of FRP has excellent corrosion resistance. The outer surface of the pipeline does not need any anti-corrosion treatment in corrosive application environments. The wear-resistant layer of the polyurethane lining has high resilience. When high-speed corrosive particles wash away the surface of the polyurethane elastomer, the polyurethane surface is under pressure. Plastic deformation occurs and the polyurethane returns to its original shape after the external force disappears. This elastic property of "softness overcomes rigidity" greatly reduces the wear of the wear-resistant layer of the polyurethane lining by the medium, especially in working conditions where there are wet media such as water and oil. Under the conditions, its wear-resistant life is often several to dozens of times that of steel pipes and other non-metallic wear-resistant pipes.

　　2. Small operating resistance and excellent anti-fouling performance:

　　The polyurethane elastomer has a smooth surface with an absolute roughness of 0.082, which can reduce operating resistance, reduce transportation pressure and costs. Secondly, polyurethane has a symmetrical molecular structure and is non-polar to the outside. It is resistant to Ca+2, CO3-2, HCO- in the slurry. 3. OH-plasma has no adsorption effect, cannot form a scale layer, and has good anti-scaling and slowing performance.

　　3. Good interface bonding and controllable wear-resistant layer thickness:

　　The pipe structure adopts unique interface treatment and multi-composite technology. The interface of the fiberglass/polyurethane wear-resistant layer is firmly combined, the inner lining wear-resistant layer is evenly distributed, and there will be no shedding, voiding or local tearing. The polyurethane elastomer inner lining is resistant to The thickness of the grinding layer is controllable and adjustable.

　　4. Light weight, easy to transport and install, and low cost:

　　Because the pipe body is made of fiberglass as the outer structural layer and polyurethane elastomer as the inner wear-resistant layer, it is relatively light in weight, has simple hoisting equipment, and can simplify the support structure, greatly reducing transportation, installation and maintenance costs.

　　2. Product specifications: Pipe diameter is DN100~DN600mm, single length is 6m~12m, maximum working temperature is 80℃, pressure level is 1.6MPa to 10.0MPa; using thread, socket, flange, flat end and other connection methods .

　　3. Application fields: It is widely used in dredging, electric power, mining, coal, chemical and other industries to transport abrasive granular materials and corrosive media such as mud, sand, coal powder, ash, mineral powder, aluminum liquid, mud, etc.

　　1. Dredging industry: Used for port construction and river dredging to transport mud and sand.

　　2. Electric power industry: ash removal pipes, ash and slag pipes, and gray water recovery pipes in thermal power plants.

　　3. Mining industry: tailings and mud transportation, underground filling pipelines.

　　4. Metallurgical industry: pipelines used to transport non-ferrous metals such as slurry, metallurgical waste residue, lead pellets, aluminum powder, etc.

　　5. Coal industry: heavy media coal preparation in coal washing plants and long-distance coal transportation pipeline systems, and sediment backfill pipelines in coal mining.

　　6. Sea and lake salt chemical industry: sea salt and brine transportation.

　　4. Implementation standards

　　JC/T552-2011 "Filament wound reinforced thermosetting resin pressure pipe"

　　SY/T6266 "Specifications for Low-Pressure Fiberglass Line Pipes"

　　GB/T 528-2009 "Determination of tensile stress and strain properties of vulcanized rubber or thermoplastic rubber"

　　GB/T 529-2008 "Determination of tear strength of vulcanized rubber or thermoplastic rubber"

　　GB/T 1458-2008 "Test method for mechanical properties of fiber-wound reinforced plastic ring specimens"

　　GB/T 5349-2005 "Test method for axial tensile properties of fiber-reinforced thermosetting plastic pipes"

　　JB/T 7705-1995 "Loose Abrasive Abrasive Wear Test Method Rubber Wheel Method"

　　BS EN 1465-1995 "Adhesives - Determination of the tensile roll shear strength of rigid bonded components"