Overview
Resin mortar threaded pipes are engineered solutions for aggressive fluid handling, combining structural steel strength with chemically inert resin mortar linings. The threaded coupling system allows for rapid field assembly without welding, making them ideal for modular plant designs and retrofit projects. Developed as an alternative to expensive alloy pipes, these systems provide cost-effective corrosion protection in pH ranges from 1 to 13. Typical diameters range from 2" to 24", with pressure ratings up to 150 psi depending on wall thickness and reinforcement design.
Structure and Working Principle
The pipe features a three-layer construction: an outer carbon steel shell provides mechanical strength, a middle adhesive layer ensures bonding, and the inner resin mortar lining (3-6mm thick) delivers chemical resistance. Common lining materials include epoxy-modified novolac resins for extreme acid resistance or furan resins for solvent compatibility. Threaded connections use tapered NPT or BSPT threads sealed with PTFE tape or thread compounds. The lining extends seamlessly through couplers, maintaining continuous corrosion protection. Some designs incorporate flanged ends for connection to non-threaded equipment.
Key Features
Superior to rubber-lined pipes in abrasion resistance, these pipes withstand slurry flows with up to 40% solids content. The mortar lining maintains dimensional stability up to 180°F (82°C), outperforming many plastic alternatives. Electrically conductive versions are available for static charge dissipation in flammable service. Unlike fiberglass-reinforced plastic (FRP) pipes, the steel construction allows magnetic detection for underground installations. The threaded design eliminates hot work permits during installation, reducing downtime in retrofit applications.
Application Areas
Primary applications include sulfuric acid pickle lines in steel mills, leachate collection in landfills, and abrasive slurry transport in mineral processing. Municipal wastewater plants use them for chemical feed lines and scrubber systems. Emerging applications include FGD (flue gas desulfurization) systems in power plants. In mining, they're specified for tailings pipelines where both corrosion from acidic water and abrasion from ore particles occur. Food-grade versions with FDA-compliant linings serve in caustic cleaning systems for food processing facilities.
Maintenance and Precautions
Annual internal inspections using boroscope cameras are recommended to detect lining wear. Localized repairs can be made with compatible resin putties, but extensive damage requires section replacement. Never use wire brushes or abrasive tools on the lining surface during cleaning. Storage precautions include keeping threaded ends protected with caps and avoiding UV exposure to resin surfaces. During installation, use proper thread engagement (typically 4-5 full turns) and avoid over-tightening that could crack the lining. Support spacing should not exceed 1.5 times standard steel pipe intervals.
B2B Procurement Guide
Specify resin type (epoxy, vinyl ester, etc.) based on chemical exposure data from your process. Request certified test reports for lining adhesion strength (minimum 300 psi) and porosity. For abrasive service, verify the inclusion of silica or alumina fillers in the mortar mix. Lead times typically range 4-8 weeks for custom sizes. Consider stocking spare couplers and short nipples for emergency repairs. When comparing quotes, confirm whether pricing includes hydrostatic testing and lining spark testing (5-15kV DC). Some suppliers offer turnkey installation services with trained threading crews.
Related Manufacturers
- 主营：充填管道、井下充填管道、回填管道、矿山耐磨管道、堆焊耐磨管、碳化铬堆焊管道、双金属耐磨管道、砂浆输送管道、耐磨管道管件
- 主营：充填管道、回填管道、矿山充填管道、井下充填管道、钻孔竖井充填管道、堆焊耐磨管、堆焊钢管、堆焊耐磨管道、碳化铬堆焊管道、矿山耐磨管道、双金属耐磨管道
- 主营：中空锚杆、预应力注浆锚杆、锚杆配件、涨壳砂浆锚杆、自进式管棚管、注浆钢花管、超前小导管、防腐涂塑钢管、精密无缝钢管异型、钢绞线桩基钢护筒
- 主营：乐泰、汉高、胶粘剂、乐泰螺纹胶、胶水
- 主营：[]
- 主营：钢制瓦斯抽放管、矿山机械
- 主营：防腐钢管、涂塑钢管、保温钢管、螺旋钢管、管件、热浸塑钢管、法兰、弯头、三通
- 主营：螺旋钢管、螺旋管、钢管桩、螺旋焊管、钢护筒
- 主营：矿用门、轨道工具、锚杆钻机、螺纹钢锚杆、喷浆机、风镐破碎镐、无压风门、给煤机、注浆机、矿用防火栅栏门、皮带硫化机、洗靴机、皮带纠偏装置、凿岩机、防溢裙板、挡尘帘、单体液压支柱、矿车轮对、轨道轮、地辊、搅拌桶、矿用电机车、皮带清扫器、皮带除铁器、料仓空气炮清堵器
- 主营：输油管、蒸汽管、橡胶管、喷浆管、喷砂管、灰胶管、管接头、输水管、耐磨管、输送管、抽砂管、布胶管、空气管、胶管接、吸水管、泥浆管、编织胶管、阻燃胶管、吸水胶管、橡胶软管、特种胶管、夹线胶管、液压油管、法兰连、接头连
- 主营：桥式滤水管、圆孔滤水管、缠丝滤水管、螺旋管、无缝管、不锈钢管
- 主营：镀锌板、冷板、热轧板、镀锌方管、镀锌管、无缝管、焊管、方管、中板、角钢、槽钢、工字钢、H型钢、酸洗板、冷轧板、开平板
- 主营：蛭石隔热管托、聚氨酯保冷管托、管托管夹、保冷管托、隔热管托、弹簧支吊架
- 主营：乐泰胶水、南大硅橡胶、北化502胶水、螺纹锁固胶、管螺纹密封胶、拜高胶水、海鹰胶粘剂、卡夫特胶粘剂、安特固胶水、康达新材-万达胶水、道康宁胶水、灌封胶、乐赛尔LOXEAL、北回胶水、禹王胶水、3M胶水、劳保手套、快干胶、密封胶、固持胶-轴承胶、结构胶、环氧胶、UV胶、清洗剂、白云胶水
- 主营：涂塑复合钢管、聚氨酯保温管、钢套钢蒸汽保温管、热浸塑管、给排水涂塑复合钢管、石油套管、防腐钢管、衬塑管道
- 主营：钨加工件、钼加工件、钽加工件、钽管、铌管、铱管、铌加工件、铜镶钨电极加工件、钨铱流口、钽棒、钽板、真空炉配、镧钨电极、铈钨电极、专业焊接铜电极、电阻焊电极、钨铜合金加工件、铪金属
- 主营：金属接头、防水接头、电缆接头、金属软管、波纹管、蛇皮管、防爆软管、平包管、尼龙软管、普利卡软管、可挠电气导管、包塑金属软管、镀锌软管接头、包塑金属软管锁母、镀锌软管、不锈钢软管、格兰头