Tianjin Brisk Steel is one of the manufacturers of LSAW Steel Pipe Piles for Foundation in China. Our products are mainly exported to the Middle East, Southeast Asia, Europe, New Zealand, and other regions.If you would like to learn more about our products, feel free to contact us and send your purchase list.
Why LSAW Pipe Is Used for Piling
- Higher wall thickness capability. Steel plate up to 40 mm or more can be formed and welded, giving piles the section strength needed for deep driving and high axial loads.
- Consistent weld quality. Submerged arc welding on both sides of the seam produces a full-penetration weld with predictable mechanical properties, verified by ultrasonic and/or radiographic testing on every joint.
- Large diameter range. LSAW piles are commonly available from around 406 mm (16") up to 1,420 mm (56"), covering everything from building foundation piles to large marine dolphins and offshore jacket legs.
- Driveability. The pipe's straightness, roundness, and consistent wall thickness reduce the risk of buckling or deviation during pile driving compared to fabricated or spiral-welded alternatives.
| Grade | Minimum Yield Strength | Minimum Tensile Strength | Typical Use |
|---|---|---|---|
| S235JRH | 235 MPa | 360–510 MPa | Lighter-load piling, temporary works |
| S275J0H / S275J2H | 275 MPa | 410–560 MPa | General building and bridge foundation piling |
| S355J0H / S355J2H / S355K2H | 355 MPa | 470–630 MPa | High-load foundations, marine and offshore piling |
Minimum yield strength decreases at greater wall thicknesses under EN 10219 - always check the grade table against the actual wall thickness ordered, not just the nominal grade name.
Typical Specifications
- Outer Diameter: approx. 406 mm – 1,420 mm (16" – 56")
- Wall Thickness: typically 8 mm – 40 mm, selected based on driving stress and axial load design
- Length: as ordered; piles are often supplied in sections for field splicing on long piles
- End Preparation: plain ends or beveled ends for field welding/splicing, driving shoes on request
- Testing: hydrostatic or non-destructive weld examination per EN 10219; mechanical testing (tensile, flattening) per heat/lot
Note: Confirm current diameter, wall thickness, and length capability directly with your supplier, as production ranges vary by mill.
Applications
- Building and high-rise foundation piling
- Bridge pier and abutment foundations
- Retaining walls and sheet pile-adjacent bulkheads
- Marine and waterfront structures: wharves, jetties, dolphins, fender piles
- Offshore platform jacket legs and support structures
FAQ
Q: What is the difference between LSAW pipe piles and seamless pipe piles?
A: LSAW pipe piles are formed from steel plate and welded along a longitudinal seam using submerged arc welding, which allows larger diameters and heavier wall thicknesses than seamless pipe. Seamless pipe piles have no weld seam but are generally limited to smaller diameters, and are less commonly used for large foundation piling projects.
Q: What EN 10219 grade should I choose?
A: The required grade depends on the structural design load, not personal preference - S355 offers the highest yield and tensile strength for heavy-load foundations, while S235 and S275 are used for lighter loads or where a lower-strength material meets the design. The pile grade should always be specified by the project's structural or geotechnical engineer.
Q: Can LSAW pipe piles be used in marine environments?
A: Yes, LSAW pipe piles are widely used for wharves, jetties, and offshore structures, but marine use typically requires additional corrosion protection (coating and/or corrosion allowance) because of continuous exposure to seawater and tidal splash zones.
Q: How is the pile length determined if it exceeds standard mill length?
A: Piles longer than standard mill lengths are supplied in multiple sections and joined on-site by full-penetration field welding at beveled ends, following the project's welding procedure specification (WPS).
Hot Tags: lsaw steel pipe piles for foundation, China lsaw steel pipe piles for foundation manufacturers, suppliers, factory, chemical industry lsaw pipe, diameter controllable lsaw pipe, En 10219 Lsaw Pipe, low alloy lsaw pipe, lsaw pipe, thick walled steel pipe
