Large-diameter LSAW pipes are manufactured using submerged arc welding (SAW) technology. The steel plate is pressed into shape and then subjected to double-sided SAW welding, resulting in uniform and continuous welds. Compared to other welded pipes, they possess high tensile strength, impact resistance, and corrosion resistance, making them suitable for harsh operating conditions involving high pressure, high and low temperatures, and strong corrosion. Based on our clients' needs, we provide standard-compliant, customizable, high-quality large-diameter LSAW pipes and one-stop services to help projects be implemented efficiently.
Our large-diameter LSAW pipe specifications cover mainstream engineering needs and can be flexibly adjusted according to the actual requirements of the project. Key indicators:
Outer diameter: 406mm-1829mm, with dimensional tolerance controlled within ±0.1% to ensure compatibility during connection;
Wall thickness: 6mm-100mm, with wall thickness tolerance within ±5%, and custom wall thicknesses are also supported for high-pressure applications;
Length: Standard specifications are 6m and 12m, and custom lengths from 0.5m to 24m are available to meet the needs of special installation scenarios;
Surface treatment: 3PE, 3LPE, galvanizing, and other treatments are available, further enhancing corrosion resistance and meeting the requirements of different media transmission.
Large-diameter LSAW pipes, with their high strength, low deformation, and excellent sealing performance, are widely used in key engineering projects worldwide for transporting liquids, gases, and some solid materials: Energy transmission: long-distance oil and natural gas pipelines, shale gas extraction and transmission pipelines; Chemical and industrial: chemical raw material pipelines, acid and alkali medium pipelines, steam pipelines, and refinery supporting pipelines; Municipal and infrastructure: urban water supply/drainage main pipelines, sewage treatment pipelines, heating networks, and bridge structural support pipelines; Power engineering: circulating water pipelines for thermal/hydropower plants, desulfurization and denitrification pipelines, and power transmission supporting pipelines.
Every large-diameter LSAW pipe undergoes rigorous quality testing before leaving the factory. This includes basic tests such as chemical composition analysis, tensile strength, yield strength, and elongation; process tests such as hydrostatic testing, flattening test, bending test, and impact test; and non-destructive testing such as ultrasonic testing and X-ray testing. Each large-diameter LSAW pipe has a unique serial number and a corresponding testing certificate for easy traceability. Our minimum order quantity for large-diameter LSAW pipes is 2-5 tons, and the minimum order quantity for customized large-diameter LSAW pipes is 5 tons. After production, we offer various transportation options such as bulk cargo ships and container shipping. We have established partnerships with multiple logistics companies to ensure timely, high-quality, and sufficient delivery to the customer's destination. We also provide commercial invoices, packing lists, test reports, certification certificates, and other customs clearance documents to assist our clients with customs clearance.
If you have any recent purchasing needs for Large-diameter LSAW Pipes or would like to learn more about our products, please feel free to contact us! We are dedicated to providing you with high-quality products and services, and look forward to cooperating with you!
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