LSAW Steel Pipe – High-Quality Longitudinal Submerged Arc Welded Pipes for Industrial Applications LSAW steel pipes are engineered for superior performance in demanding environments, offering unmatched strength, durability, and corrosion resistance. These longitudinal submerged arc welded pipes are manufactured using advanced welding techniques that ensure seamless integrity and consistent mechanical properties across the entire length. Designed to meet international standards such as API 5L, API 5CT, ASTM A53, EN 10217, DIN 2458, and GB/T9711, LSAW pipes are ideal for high-pressure fluid transport systems in oil, gas, water, and industrial pipelines. Key Features: - Precision-engineered dimensions: Outer diameters range from 219.1mm (8") to 1820mm (72"), with wall thicknesses between 5mm and 50mm - Multiple steel grades available including API 5L GR B, X42–X70, ASTM A53 GR A/B/C, EN S275JR–S355J2H, and GB Q195–L555 - Customizable surface treatments: Fusion bond epoxy, 3PE, coal tar epoxy, bitumen, vanishing coatings, or black oil finishes per client specifications - Rigorous quality assurance: Full chemical composition analysis, mechanical testing (tensile strength, yield point, elongation), flattening, bending, blow, impact, hydrostatic, and X-ray inspections - Certified compliance: Mill Test Certificate (EN 10204/3.1B) ensures traceability and adherence to global industry benchmarks Detailed Description: LSAW pipes are produced by rolling a flat steel plate into a cylindrical shape and welding the longitudinal seam using submerged arc welding technology—an automated process that delivers uniform weld quality without external oxidation. This method results in pipes with exceptional dimensional accuracy, minimal internal stress, and enhanced structural stability. The manufacturing process includes heat treatment, straightening, and non-destructive testing to guarantee optimal performance under extreme conditions. With customizable coating options, these pipes offer long-term protection against environmental degradation, making them suitable for both buried and above-ground installations. Whether used in offshore platforms, land-based transmission lines, or municipal infrastructure projects, LSAW pipes provide reliable service life and minimal maintenance requirements. Applications: Ideal for transporting crude oil, natural gas, refined petroleum products, and potable water across long distances. Commonly deployed in onshore and offshore pipelines, power generation plants, desalination facilities, and large-scale construction projects where high pressure, temperature resistance, and corrosion protection are critical. Their versatility also makes them suitable for geothermal energy systems, chemical processing plants, and industrial steam networks. Customer Reviews: “Used these LSAW pipes for our offshore gas project—no leaks after two years of continuous operation despite harsh marine conditions.” “Excellent consistency in wall thickness and weld quality. Our engineers were impressed with the mill test reports and coating adhesion.” “Perfect fit for our high-pressure pipeline system. Easy to install and fully compliant with API 5L PSL2 standards.” Frequently Asked Questions: What is the difference between LSAW and ERW pipes? LSAW pipes have a single longitudinal weld seam, allowing for thicker walls and higher pressure ratings compared to electric resistance welded (ERW) pipes, which are typically used for lower-pressure applications. Are LSAW pipes suitable for cold climates? Yes, with proper material selection (e.g., X60 or X70 grades) and thermal insulation, LSAW pipes perform reliably even in sub-zero temperatures due to their ductility and impact resistance. Can I request custom coatings for my project? Absolutely—we offer multiple protective coatings tailored to your specific environmental exposure, including 3PE (three-layer polyethylene), fusion-bonded epoxy (FBE), and coal tar enamel, all applied under controlled conditions for maximum durability. How do I ensure the pipe meets international standards? Each batch comes with a certified Mill Test Certificate (EN 10204/3.1B) detailing chemical composition, mechanical properties, and test results, ensuring full compliance with API, ASTM, EN, and other globally recognized norms.
Product Categories : Steel Pipe > Seamless Steel Pipe
