Steel Sheet & Plate & Steel Sheet Pile,Q235B、Q355B/SY295/SY390、S275JR、S355GP、S430GP、A328 Gr50、A572 Gr50、A690
1. Product Overview
Steel sheet pile is a special hot-rolled or cold-formed structural steel with professional interlocking locking joints. It forms continuous, watertight and high-strength retaining walls through mutual clamping connection.
With high structural strength, excellent soil and water pressure resistance, perfect water tightness, reusable performance and outstanding construction adaptability, steel sheet pile is widely used for foundation excavation support, coastal protection, river regulation, flood control, dock engineering and municipal deep foundation projects. It is the most reliable temporary and permanent retaining & waterproof solution for civil engineering.
2. Product Classification & Main Grades
2.1 Section Types
U-type (Larsen type): Most mainstream, flexible construction, widely used for foundation support and water retaining projects
Z-type: High section modulus, large rigidity, suitable for deep foundation and high-load engineering
L-type & S-type: Lightweight type for simple support and shallow excavation projects
2.2 Material Grades
Q235B / S235JR: Conventional grade, cost-effective, general foundation engineering
Q355B / S355JR: High-strength grade, for deep foundation, coastal and heavy-load projects
S275JR: European standard general structural grade for international engineering bidding
3. Standard Specifications
Common effective width: 400mm / 500mm / 600mm / 700mm
Thickness range: 6.0mm–24.0mm
Standard length: 6m / 9m / 12m / 15m / 18m / 24m
Process type: Hot rolled / Cold formed
Connection type: Interlocking self-locking joint, fully closed assembly
Features: High rigidity, tight locking, no water leakage, easy piling and pulling
4. Core Product Advantages
Excellent Water Tightness: Precise interlocking joints form a fully closed barrier, effectively blocking water and soil leakage.
High Structural Stability: Strong lateral pressure resistance, anti-deformation performance for deep excavation and soft soil foundation.
Reusable & Cost-saving: Recyclable after construction, greatly reducing overall project cost.
Fast Construction: Simple piling process, short project cycle, no complex foundation curing required.
Strong Environmental Adaptability: Suitable for soft soil, coastal tidal flat, river and swamp geological conditions.
Customizable Performance: Can be galvanized or painted for anti-corrosion to extend service life for permanent projects.
5. Production Process
Raw slab inspection → High-temperature heating → Continuous rolling → Section forming → Locking groove precision molding → Straightening → Fixed-length cutting → End leveling → Surface inspection → Anti-corrosion treatment (optional) → Marking → Packaging & delivery
6. Processing & Service Support
Custom length cutting and end cutting
Hole opening, welding and reinforcement processing
Hot-dip galvanizing anti-corrosion treatment
Custom special section forming
7. Executive Standards
National Standard: GB/T 20933European Standard: EN10025International Engineering Standard: Larsen standard sheet pile specifications
8. Main Application Fields
Municipal Foundation Engineering: Deep foundation excavation support, basement waterproofing and retaining
Water Conservancy & River Regulation: River bank reinforcement, waterway dredging, slope protection
Coastal & Port Engineering: Seawall protection, dock foundation, tidal flat reinforcement, offshore anti-erosion structure
Flood Control & Emergency Works: Flood barrier, temporary water retaining wall
Road & Bridge Engineering: Road slope support, bridge foundation protection
Underground Construction: Comprehensive pipe gallery foundation, underground space enclosure
9. Quality Inspection Items
Dimensional inspection: Section size, thickness, width, length and locking groove precision
Mechanical properties: Yield strength, tensile strength and elongation test
Surface inspection: No cracks, folds, scars or deformation
Locking performance test: Smooth clamping and pulling, tight sealing performance
Overall straightness and flatness inspection
10. Packaging, Transportation & Storage
Packaging: Standard steel bundling with end protection and binding reinforcement
Transportation: Avoid heavy collision and extrusion to prevent locking groove deformation
Storage: Flat stacked in dry and ventilated yard, moisture-proof and rust-proof
Handling: Protect the interlocking joints to ensure assembly accuracy
11. Foreign Trade Business Instructions
MOQ: 10 tons, mixed specifications acceptable
Regular sizes in stock, customized lengths and anti-corrosion treatment 5–7 days delivery
Available documents: Mill test certificate, dimension inspection report and certificate of origin
Payment terms: 30% TT advance payment, balance against B/L copy
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