Z Type Steel Sheet Piles
Cold rolled Z type sheet piles are produced through a continuous roll forming process, where steel plates pass through multiple rollers to gradually form the Z-shaped profile with uniform thickness along the entire length. Interlocks are precisely formed during the rolling process and positioned away from the neutral axis, maximizing section modulus and structural efficiency.
Compared with hot rolled sheet piles, cold forming allows greater flexibility in profile dimensions while maintaining stable mechanical performance. The process enhances yield strength and hardness without thermal distortion, ensuring accurate geometry and reliable interlock performance.
Manufacturing Process
Cold rolled sheet piles (also known as cold formed sheet piles) are produced through a continuous roll forming process:
- Steel plates are passed through multiple roller stations
- Interlocks are formed at the initial stage to ensure precision
- Profiles are shaped progressively under normal temperature
- Cooling systems (water-based) are applied to maintain dimensional stability
👉 Engineering Insight：
Cold forming improves yield strength and hardness without thermal distortion, ensuring stable mechanical performance and dimensional accuracy.
Technical Parameter Table
| Section | Width (mm) | Height (mm) | Thickness (mm) | Weight (kg/m) | Inertia (cm⁴/m) | Section Modulus (cm³/m) |
|---|
| GPZ 4-770 | 770 | 213 | 5 | 38.2 | 4770 | 448 |
| GPZ 6-900 | 900 | 254 | 6 | 51.5 | 7757 | 611 |
| GPZ 8-850 | 850 | 255 | 7 | 60.9 | 10375 | 835 |
| GPZ 10-857 | 857 | 302 | 8 | 72.1 | 15249 | 1009 |
| GPZ 11-850 | 850 | 320 | 8 | 73.2 | 17639 | 1102 |
| GPZ 13-850 | 850 | 380 | 8 | 75.1 | 24831 | 1307 |
| GPZ 16-900 | 900 | 400 | 8 | 82.6 | 32711 | 1635 |
| GPZ 18-900 | 900 | 401 | 9 | 92.6 | 36677 | 1829 |
| GPZ 20-900 | 900 | 402 | 10 | 102.6 | 40616 | 2021 |
| GPZ 23-800 | 800 | 474 | 10 | 94.6 | 55260 | 2330 |
| GPZ 25-800 | 800 | 475 | 11 | 102.6 | 59410 | 2500 |
| GPZ 30-750 | 750 | 510 | 11.5 | 108.7 | 76670 | 3005 |
| GPZ 36-750 | 750 | 492 | 14 | 141.3 | 89341 | 3632 |
| GPZ 44-700N | 700 | 550 | 14.5 | 149.9 | 119005 | 4413 |
| GPZ 52-700 | 700 | 550 | 16 | 167.7 | 143752 | 5236 |
Key Engineering Features & Advantages
- ⚙️ Optimized Structural Design – Interlocks located away from neutral axis improve bending performance and reduce stress concentration
- 📊 Higher Section Modulus Efficiency – Better strength-to-weight ratio compared to traditional U type sheet piles
- 📉 Material Saving Solution – Reduced steel consumption under equivalent structural requirements
- 📐 Flexible Profile Design – Width, height, and thickness fully customizable for project-specific needs
- 🚧 High Installation Efficiency – Large width sections reduce installation time and handling cost
- 🔗 Double / Crimped Installation System – Provides larger system width and improved structural stability
- 🌊 Enhanced Water Tightness – Fewer interlocks per linear meter improve sealing performance
- 📦 Wide Production Range – Thickness from 3mm to 16mm, length up to 50m, 200+ available profiles
Engineering Application Trend
Z type sheet piles are increasingly preferred in modern infrastructure projects, especially in:
- Marine engineering (wharfs, seawalls, bulkheads)
- Deep foundation systems
- Combined wall structures (HZ, tubular systems)
While U type sheet piles remain widely used in Asia, Z profiles are now the dominant choice in Europe due to their superior structural efficiency and economic performance.
Engineering Design & Custom Support
- Full sheet pile design and calculation support from project initial stage
- Section optimization based on soil condition, depth, and load requirements
- Early-stage cost estimation for better project budgeting
- Compatible with various international standards and profiles (OZ, PAZ, combined wall systems)
