LSAW (Longitudinal Submerged Arc Welded) pipes are engineered for strength, stability, and performance under high pressure. Made by welding steel plates longitudinally, these pipes are ideal for transporting oil, gas, water, and other fluids over long distances, as well as for piling and structural applications requiring maximum reliability.
As a trusted LSAW pipe manufacturer, Yashanway delivers premium-grade longitudinal welded steel pipe with superior dimensional accuracy and full compliance with international standards. Our pipes are widely used in oil & gas, marine, construction, and power industries.
Material Grades: API 5L Gr. B/X42–X80, ASTM A252, ASTM A671/A672, Q235B, Q345B, S355, and more
Size Range:
Outside Diameter: 406mm – 1626mm (16" – 64")
Wall Thickness: 6mm – 50mm
Length: Up to 12.2m (40 feet) or customized
Production Standards: API 5L, ASTM A53/A252, EN10210/10219, ISO 3183, GB/T9711
Welding Process: UOE, JCOE, or C forming with internal and external submerged arc welding
Surface Coatings:
Bare, anti-rust oil, black paint
3LPE, 3LPP, FBE, epoxy, or coal tar enamel as per customer needs
End Types: Plain, beveled, or welded with flanges; ends can be protected with caps
Non-Destructive Testing: 100% ultrasonic testing, hydrostatic test, radiographic inspection
✅ High Strength for High-Pressure Use
LSAW pipes are ideal for cross-country pipelines and load-bearing structures that require strong weld seams.
✅ Superior Weld Quality
Longitudinal submerged arc welding produces deep-penetration welds with minimal defects.
✅ Excellent Dimensional Accuracy
Perfect roundness, straightness, and wall thickness ensure ease of installation and safety in operation.
✅ Corrosion-Resistant Options
A wide variety of external coatings available for onshore, offshore, and buried pipeline applications.
✅ Full Customization Support
Tailored pipe diameters, lengths, coatings, and ends for every project requirement.
✅ Certified and Traceable
Supplied with mill test certificates and full quality assurance documentation per API and ISO standards.
Long-distance oil and gas transmission pipelines
Water transportation and sewage systems
Offshore platforms and subsea pipelines
Bridge piles and building foundation piling
Structural supports in energy and power plants
Steel pipe jacking and casing systems
With decades of experience as a carbon steel pipe supplier, we provide LSAW pipes manufactured with precision and consistency. Our in-house testing facilities, expert engineering team, and international export capability ensure you receive the highest-quality pipes — on time and within budget.
Looking for a dependable LSAW pipe manufacturer? Reach out to us now for specifications, pricing, or custom orders. We’re ready to support your project with world-class longitudinal welded pipes built to perform.