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Help CenterSteel Sheet & Plate & Steel Sheet Pile，Q235B、Q355B（Q345B）、Q390B、Q420B、SY295, SY390, S355GP
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Steel Sheet & Plate & Steel Sheet Pile，Q235B、Q355B（Q345B）、Q390B、Q420B、SY295, SY390, S355GPNegotiableMOQ: 5 Metric Tons -
Steel Sheet & Plate & Steel Sheet Pile，Q235B、Q355B（Q345B）、Q390B、Q420B、SY295, SY390, S355GPNegotiableMOQ: 5 Metric Tons
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Steel Sheet Pile Detailed Product Description
1. Product Definition
Steel sheet pile is a kind of hot-rolled / cold-formed section steel with interlocks. It interlocks with each other through the lock mouths to form a continuous soil-retaining and water-retaining enclosure wall, widely applied in temporary or permanent supporting projects such as foundation pits and cofferdams, docks.
2. Main Classification
1. By Production Process
Hot-rolled Steel Sheet Pile: Formed by high-temperature rolling, featuring uniform material, high strength (Q355/Q420), precise lock mouth and good durability. Suitable for deep water, deep foundation pits and permanent projects.
Cold-formed Steel Sheet Pile: Cold-formed from thin steel plates with low cost and flexible section. It is applicable to shallow foundation pits and temporary projects, with slightly lower strength and durability.
2. By Section Shape
U-type (Larssen Type): The most common type with high cost performance; effective width 400–600mm, height 170–210mm; suitable for foundation pits of 6–9m and river revetments.
Z-type: With centered lock mouth and strong bending resistance, ideal for deep foundation pits over 10m, port docks and marine engineering.
Straight Type (Flat Plate Type): Simple structure with weak bending resistance, used for shallow trenches, pipe trenches and light supporting works.
3. Material & Mechanical Properties
Common Grades: Q235B, Q355B (Q345B), Q390B, Q420B; Imported grades: SY295, SY390, S355GP.
Yield Strength: 235–420MPa; Tensile Strength: 370–600MPa; Elongation: ≥18%, ensuring good cold bending and welding performance.
4. Main Specification Parameters (Mainstream Hot-rolled U-type)
| Model | Effective Width(mm) | Height(mm) | Web Thickness(mm) | Weight per Meter(kg/m) | Length Range(m) |
|---|---|---|---|---|---|
| SP-U400×170×15.5 | 400 | 170 | 15.5 | 76.1 | 6/9/12/15/18 |
| Larssen Type Ⅳ | 400 | 170 | 15.5 | 76.1 | 6–18 |
| Larssen Type Ⅴ | 500 | 200 | 20.5 | 105 | 6–18 |
Length: Standard 6/9/12/15m, customized maximum length up to 24m.
Delivery: Calculated by theoretical weight or actual weight; fixed length and multiple length are available.
5. Core Features
Water Seepage Prevention: Tightly interlocked lock mouths with reliable waterproof performance; waterproof rubber strips can be equipped for high water pressure conditions.
High Strength & Durability: Hot-rolled material with uniform texture, corrosion resistance and impact resistance, reusable for more than 20 times.
Efficient Construction: Constructed by vibratory hammer / static pile driver, fast construction speed and small floor area, suitable for narrow sites.
Economical & Eco-friendly: Recyclable, low noise, no mud pollution with low comprehensive cost.
6. Application Scenarios
Municipal Foundation Works: Support for underground garages, subways and pipe gallery excavation.
Water Conservancy & Dock Projects: Port bulkhead, dock, cofferdam and flood control embankment.
Bridge & Road Engineering: Deep foundation of bridge piers and temporary water retaining for underwater bearing platforms.
Emergency Rescue: Support for landslides, collapses and flood disaster emergency works.
7. Construction & Storage
Construction Equipment: Vibratory hammer (mainstream), static pile driver (adjacent to buildings/pipelines), impact hammer.
Construction Process: Setting out → Guide frame installation → Steel sheet pile driving → Bracket installation → Excavation → Backfilling → Pile pulling.
Stacking & Storage: Store on flat and dry site, layered stacking (no more than 5 layers), avoid direct sunlight and rain to prevent deformation and rust.
8. Quality Standards
National Standard: GB/T 20933-2014 Hot Rolled Steel Sheet Piles.
Japanese Standard: JIS A 5523/A 5528; European Standard: EN 10248.
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