Cangzhou Spiral Steel Pipes has built a solid reputation supplying anti-corrosion steel pipe products for global natural gas projects, with reliable 3lpe Coated Pipes widely selected for natural gas underground pipeline construction. Buried gas pipelines face constant threats from soil corrosion, groundwater and stray current, so choosing robust coated spiral pipes is essential to maintain long-term gas transmission safety. Our 3lpe Coated Pipes adopt three-layer polyethylene coating, delivering strong adhesion and excellent anti-corrosion performance, greatly extending the service life of buried natural gas lines and lowering routine maintenance expenses.
For large long distance natural gas transmission projects, it is our X65 SSAW Line Pipe that most of customers choose as base pipe for 3lpe Coated Pipes. This grade spiral submerged arc welded pipe has excellent tensile strength and pressure resistance, it is especially applicable for the underground natural gas pipelines can meet the operating pressure requirements. Our factory produceX65 SSAW Line Pipe in accordance with API 5L standard, the period of delivery are 15-30 days, and we hydrostatically test and examined our X65 SCCP Pipe welds to makes sure uniformity in performance before they are buried underground. Our technical team is ready to explain the differences between Astm A252 Vs Api 5l and help you select the most suitable pipe grade to match your project design requirements.
Besides underground gas pipelines, our production range also covers Marine Piling Pipe for offshore and coastal engineering. While Marine Piling Pipe is mainly designed to resist seawater corrosion and wave impact, it can also be customized with anti-corrosion coatings similar to our 3lpe Coated Pipes for special marine buried piping sections. This flexible manufacturing capability allows Cangzhou Spiral Steel Pipes to serve both inland gas transmission projects and coastal infrastructure works from one production base. Whether it is city branch gas pipelines or cross-region main gas trunks, we can adjust pipe diameter, wall thickness and coating specifications to meet client drawings.
We pay close attention to packaging and transportation to keep the integrity of 3lpe Coated Pipes before site delivery. Plastic end caps are fitted to both pipe ends to block dirt and prevent coating scratches. Pipes are secured with steel strapping and wrapped with protective film, avoiding friction damage during land or sea transit. We support container loading and bulk vessel shipment. Our loading team arranges proper pipe stacking, reducing collision risks during transportation. For X65 SSAW Line Pipe and Marine Piling Pipe orders, we add extra protection for weld seams as requested.
Quality control runs through our whole production workflow. Before coating, raw steel and welded seams get full inspection. After the 3lpe coating process, we test coating thickness and peel strength to ensure compliance. When customers weigh Astm A252 Vs Api 5l for tender documents, our sales and engineering team provide full material certificates and test reports. With years of export experience, Cangzhou Spiral Steel Pipes continues to supply trusted 3lpe Coated Pipes for natural gas underground pipeline construction worldwide.
Post time: Sep-24-2026