Yier steel
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Z Type Sheet Piles
1. Product Overview
Z-sheet pile is a hot-rolled steel sheet pile with a "Z"-shaped cross-section, featuring special interlocking connections that form robust retaining or water-blocking structures. Its unique sectional shape provides excellent section modulus and moment of inertia, demonstrating outstanding load-bearing performance in deep excavations, port terminals, and flood control projects. With characteristics like rapid construction, reusability, and strong load capacity, Z-sheet piles are ideal for both permanent and temporary retaining projects.

2. Key Features
Excellent Structural Performance & Load Capacity
The unique sectional design of Z-sheet piles provides maximum section modulus and moment of inertia, offering stronger bending resistance at the same weight. This design enables them to withstand significant earth and water pressures, suitable for deep excavations and high retaining walls.
Efficient Interlocking System & Sealing Performance
Precision-engineered interlocking system ensures tight connections between piles with excellent water sealing effect. High interlock strength prevents damage during pile driving, forming continuous, complete water barriers.
Flexible Construction & Reusability
Suitable for various equipment like vibratory hammers and hydraulic hammers, enabling quick and convenient installation. As recyclable material, Z-sheet piles can be reused multiple times, significantly reducing project costs and aligning with green construction concepts.
Wide Application Adaptability
Suitable for various geological conditions including soft soil, sand, and rock formations. Available in different lengths and specifications to meet diverse engineering requirements from temporary cofferdams to permanent structures.

3.Technical Parameters of Z-Sheet Pile
Parameter | Specification Range | Standard / Notes |
Steel Grade | Q295, Q390, S355JR, S390JR, ASTM A572 | GB/T, EN, ASTM |
Section Modulus | 800-4500 cm³/m | Per meter of wall |
Moment of Inertia | 15000-180000 cm⁴/m | Per meter of wall |
Pile Width | 400-800 mm | ±2% tolerance |
Pile Height | 150-420 mm | ±2% tolerance |
Web Thickness | 8.0-24.0 mm | ±5% tolerance |
Flange Thickness | 9.5-26.5 mm | ±5% tolerance |
Interlock Type | Larssen, Modified Larssen | Standard designs |
Standard Length | 6000-24000 mm | Custom lengths available |
Weight per Meter | 60-240 kg/m | Theoretical weight |
Tensile Strength | 470-630 MPa | ASTM A370 |
Yield Strength | 295-390 MPa | ASTM A370 |
Elongation | 18%-22% | in 50mm |
Surface Treatment | As-rolled, Painted, Galvanized | Custom available |
4. Application Scenarios
Deep Excavation Support & Retaining Walls
Used in support structures for deep excavation projects like high-rise building basements and subway stations. The strong bending resistance of Z-sheet piles effectively resists soil lateral pressure, ensuring excavation safety and providing reliable protection for underground space development.
Port Terminals & Flood Control Projects
Applied in port quay walls, dock cofferdams, and flood embankments. Excellent load-bearing capacity and water sealing effect withstand ship impacts and water flow, providing long-term stable protection for water-related projects.
Bridge Foundations & Hydraulic Engineering
Used in bridge pier protection, river regulation, and sluice construction. The deep embedding capability and stability of Z-sheet piles meet strict structural safety requirements in hydraulic engineering, ensuring long-term reliable operation of water facilities.

5. FAQs
Q1: How to choose between Z-shaped steel sheet piles and U-shaped steel sheet piles?
A1: Z-piles have larger section modulus for deep excavations and high walls; U-piles are lighter for medium-depth projects. Selection should consider depth, load requirements, and budget.
Q2: What are the anti-corrosion measures for Z-shaped steel sheet piles?
A2: Methods include hot-dip galvanizing, epoxy coating, cathodic protection, or increasing corrosion allowance. Selection depends on environmental corrosivity, design service life, and maintenance conditions.
Q3: What are the construction precautions for Z-shaped steel sheet piles?
A3: Conduct geological survey before construction and select appropriate piling equipment. Control verticality during driving to avoid interlock damage. Use auxiliary methods like jetting or pre-drilling in complex strata to ensure quality.
If you want to know more, please feel free to contact us.