LSAW Welded Steel Pipe – High-Strength Carbon Structural Tube

Our LSAW (Longitudinal Submerged Arc Welding) steel pipes are manufactured using advanced longitudinal welding technology to ensure superior structural integrity and pressure resistance. Adhering to international standards such as API 5L, ASTM A53, and BS EN10219, these pipes are ideal for critical fluid transportation and heavy-duty structural applications. With a focus on high-precision tolerances and 100% hydrostatic testing, we provide a reliable piping solution that meets the rigorous demands of global industrial projects.

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Technical Specifications

Technical Category Data Details
Standard Compliance ASTM, BS, DIN, JIS, API 5L, BS EN10217, BS EN10219, etc.
Material Grade S195GT, Q195, S235GT, Q235, S355JOH, Q345
Outer Diameter (OD) 1/2” – 10” (21.3mm – 273mm)
Wall Thickness 1.2mm – 14mm
Pipe Length 1m – 16m (Customizable)
Surface Treatment Hot-dipped Galvanized, Painted, Oiled
End Treatment Plain, Threaded, Grooved, Beveled Ends
Welding Technology Longitudinal Submerged Arc Welding (LSAW)
Section Shape Round
Business Type Professional Manufacturer

Manufacturing Excellence & Quality Control

Rigorous In-line Inspection: Our dedicated QC team monitors the entire production process. From Outside Diameter and Thickness to Galvanizing and Welding surface, we conduct comprehensive in-line inspections to guarantee quality at every production stage.
100% Hydrostatic Testing: Safety is paramount. All pipes intended for fluid transport undergo 100% hydro-testing to ensure zero defects in weld integrity and leak-proof performance.
Premium Surface Finish: We offer high-quality hot-dipped galvanizing and industrial-grade painting to protect against corrosion, ensuring the pipes withstand harsh outdoor and underground environments.
Precision Processing: With the ability to provide Threaded, Grooved, or Beveled ends, we ensure our LSAW pipes are ready for immediate installation upon arrival at the job site.

Product Applications

High-Pressure Fluid Transport: Reliable transportation of water, gas, and oil (API 5L / ASTM A53).
Structural Engineering: Heavy-duty frameworks for buildings, bridges, and infrastructure projects (S355JOH / Q345).
Industrial Piping: Used in chemical plants, refineries, and power generation facilities.
Piling & Foundation: Excellent load-bearing capacity for construction foundations and support columns.

Packaging & Delivery

Packing: Delivered in seaworthy bundles secured by steel strips. Damp-proof packaging is available to ensure the product arrives in perfect condition.
Fast Delivery: Normally 18-20 days after payment confirmation (T/T, L/C, D/P, or O/A).
Global Shipping: Flexible delivery via Containers or Bulk Carriers from Xingang Port, Tianjin.

Frequently Asked Questions (FAQ)

Q: What makes your LSAW pipes different from standard ERW pipes?
A: Our LSAW process utilizes Submerged Arc Welding which provides deeper weld penetration and higher structural stability, making them more suitable for high-load applications.

A: Yes. We have a professional quality control team and fully support third-party inspections to verify material grade, weld quality, and dimensions.

A: Yes, we can manufacture lengths from 1m up to 16m to reduce on-site welding and installation costs for our customers.

A: We provide free samples for your evaluation. Buyers only need to cover the basic courier fees.

A: Our factory is located in Tianjin, China, the center of steel production, ensuring competitive pricing and close proximity to Tianjin Port for rapid export.

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