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| Item | Specification / Capability |
|---|---|
| Outside Diameter | Φ508 mm – Φ3048 mm (20" – 120") |
| Wall Thickness | 6.0 mm – 100 mm |
| Pipe Length | Up to 70 m |
| Manufacturing Process | Longitudinal Submerged Arc Welding (LSAW) |
API 5L, ASTM A252, ISO 3183, and relevant EN standards can be supplied according to project requirements and applicable specifications
Available steel grades include X42, X52, X60, X65, X70, X80, and other equivalent grades as required by project specifications.
Our LSAW pipes are manufactured for projects requiring large diameters, heavy wall thicknesses, and reliable welding performance. Production and quality control are carried out in accordance with applicable project specifications and international standards.
LSAW steel pipe is manufactured from steel plate using the longitudinal submerged arc welding (LSAW) process. The steel plate is first formed into a cylindrical shape and then welded along a single longitudinal seam using submerged arc welding technology.
Compared with spiral welded pipe (SSAW), the weld length of LSAW pipe is significantly shorter, which helps reduce welding volume and facilitates strict weld inspection. This manufacturing method is widely used for large-diameter steel pipes requiring high dimensional accuracy and consistent weld quality.
LSAW steel pipe is commonly used in long-distance oil and gas transmission pipelines, water transmission projects, offshore structures, bridge piling, port construction, and large-scale infrastructure developments.
Due to its ability to provide large diameters, thick wall sections, and stable dimensional tolerances, LSAW pipe is frequently specified for projects involving high operating pressure, heavy structural loads, or demanding service conditions.
Quality control procedures cover raw material inspection, welding inspection, dimensional verification, non-destructive testing, and hydrostatic testing to ensure compliance with project specifications.
Products can be supplied according to customer specifications, project requirements, and applicable international standards.
Our team supports international customers with technical communication, documentation, packaging, logistics coordination, and project-based supply requirements.
Our sales and technical teams work closely with customers to assist with material selection, specification review, and project requirements throughout the procurement process.
We understand the requirements of pipeline, structural, offshore, and infrastructure projects and support customers with efficient communication, documentation, and delivery coordination.
Q1: Can LSAW pipes be supplied with anti-corrosion coatings?
Yes. LSAW steel pipes can be supplied with various external and internal coating systems according to project requirements, including FBE, 3LPE, 3LPP, and other protective coatings for corrosion resistance and extended service life.
Q2: Is third-party inspection available?
Yes. Third-party inspection can be arranged upon request. Inspection agencies may witness production, testing, and final inspection procedures in accordance with project specifications.
Q3: What information is required for quotation?
To provide an accurate quotation, customers are recommended to provide pipe size, wall thickness, steel grade, standard, quantity, length requirement, coating requirement, and destination port.
Q4：How are LSAW pipes packaged and shipped?
Packaging and shipment methods are arranged according to pipe dimensions, quantity, and transportation requirements. Pipes can be supplied in loose bundles, individually loaded, or with special protection measures when required.
Q5: What is the typical production lead time?
Production lead time depends on pipe specifications, order quantity, coating requirements, and production scheduling. Please contact our sales team for the latest delivery schedule.
Address:1177 Huanhu Road, Yuelu District, Changsha, Hunan, China
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