Shandong seamless pipe mill provides an in-depth analysis of large-diameter coated steel pipes, which are defined as steel pipes with a diameter exceeding 1000 mm. These pipes are manufactured from steel ingots or solid billets through a process that involves piercing, followed by hot rolling, cold rolling, or cold drawing (Shandong Seamless Steel Tube Factory).
Large-diameter coated steel pipes are typically made by coating large-diameter spiral welded pipes or high-frequency welded pipes. The maximum diameter available is up to 1200 mm. Depending on the specific application, they can be coated with various materials such as polyvinyl chloride (PVC), polyethylene (PE), and epoxy resin (EPOXY). These coatings offer excellent adhesion, strong resistance to corrosion, and are capable of withstanding exposure to strong acids and alkalis. Additionally, they are non-toxic, rust-free, wear-resistant, impact-resistant, and have good penetration resistance. The smooth inner surface prevents any substance from adhering, reducing flow resistance, increasing fluid velocity, and improving transmission efficiency while minimizing pressure loss.
The coatings are solvent-free and leak-proof, ensuring that the transported media remains uncontaminated, thus maintaining the purity and hygiene of the fluid. These pipes can operate effectively within a temperature range of -40°C to +80°C without aging or cracking, making them suitable for use in harsh environments like cold regions.
Due to their durability and versatility, large-diameter coated steel pipes are widely used across multiple industries, including water supply systems, natural gas pipelines, oil and petrochemical projects, pharmaceuticals, telecommunications, power generation, and marine engineering. Their ability to meet diverse performance requirements makes them a preferred choice in modern infrastructure development.
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