Steel-plastic composite pipe
High-Quality Steel-Plastic Composite Pipe for Industrial Applications
Our steel-plastic composite pipe combines the strength of steel with the corrosion resistance of plastic, offering superior performance in various industrial applications. These pipes are designed to withstand extreme conditions while maintaining excellent flow characteristics.
Product Specifications
- Material Composition: Inner polyethylene layer with reinforced steel mesh
- Diameter Range: 1/2 inch to 24 inches
- Pressure Rating: 150-300 PSI (standard)
- Temperature Range: -40°F to 180°F (-40°C to 82°C)
- Chemical Resistance: Resistant to acids, alkalis, and most organic solvents
- Lifespan: 50+ years with proper installation
| Size (Inches) | Wall Thickness (mm) | Weight (lbs/ft) | Max Working Pressure (PSI) |
|---|---|---|---|
| 1/2 | 2.5 | 0.35 | 300 |
| 1 | 3.0 | 0.75 | 280 |
| 2 | 3.5 | 1.85 | 250 |
| 4 | 4.0 | 4.20 | 220 |
| 6 | 4.5 | 7.15 | 200 |
| 8 | 5.0 | 10.80 | 180 |
Key Advantages of Steel-Plastic Composite Pipe
- Superior corrosion resistance compared to traditional steel pipes
- Lower installation costs due to lightweight design
- Smooth inner surface minimizes friction loss
- Excellent resistance to water hammer effects
- Minimal thermal expansion compared to pure plastic pipes
- UV-resistant outer layer for outdoor applications
Steel-Plastic Composite Pipe FAQ
Q: What makes steel-plastic composite pipe better than traditional steel pipes?
A: Steel-plastic composite pipes offer several advantages over traditional steel pipes. The plastic inner layer provides excellent corrosion resistance, eliminating rust issues common with steel pipes. The steel reinforcement maintains structural integrity while the plastic components prevent scaling and mineral buildup. This combination results in longer lifespan, better flow characteristics, and lower maintenance costs compared to conventional steel pipes.
Q: How does the installation process for steel-plastic composite pipe differ from other pipe types?
A: Steel-plastic composite pipe installation is simpler than traditional metal pipes due to its lighter weight and flexibility. The pipes can be cut with standard plastic pipe tools and joined using either thermal fusion or mechanical fittings. Unlike steel pipes, they don't require welding for connections, reducing installation time and labor costs. The material's flexibility allows for some bending (within manufacturer specifications), potentially reducing the need for additional fittings in curved applications.
Q: What applications are steel-plastic composite pipes most suitable for?
A: Steel-plastic composite pipes are ideal for various applications including water supply systems (both potable and industrial), chemical processing plants, mining operations, oilfield water injection systems, and compressed air distribution. Their corrosion resistance makes them particularly valuable in marine environments, food processing facilities, and areas with aggressive soils. They're also commonly used in fire sprinkler systems due to their durability and pressure resistance.
Technical Performance Data
| Property | Test Standard | Performance Value |
|---|---|---|
| Tensile Strength | ASTM D638 | ≥25 MPa |
| Impact Resistance | ASTM D256 | No break at -20°C |
| Hydrostatic Pressure | ASTM D1598 | No failure at 2.5× rated pressure |
| Thermal Conductivity | ASTM C177 | 0.35 W/m·K |
| Linear Expansion Coefficient | ASTM D696 | 1.5×10-5/°C |
Installation Guidelines
- Store pipes on flat surfaces away from direct sunlight before installation
- Use proper cutting tools to ensure clean, square cuts
- Remove burrs and clean pipe ends before joining
- Follow manufacturer specifications for fusion temperatures and cooling times
- Use proper support spacing (typically every 3-4 feet for horizontal runs)
- Allow for thermal expansion in long runs (approximately 1 inch per 100 feet per 10°F temperature change)
- Pressure test systems according to local codes before putting into service
Additional Steel-Plastic Composite Pipe Questions
Q: Can steel-plastic composite pipes be used for hot water applications?
A: Yes, our steel-plastic composite pipes are rated for continuous service at temperatures up to 180°F (82°C), making them suitable for most hot water applications. The material maintains its structural integrity and pressure rating throughout this temperature range. For higher temperature applications (up to 200°F/93°C), consult with our engineering team for special formulations with reduced pressure ratings.
Q: How does the cost of steel-plastic composite pipe compare to other materials?
A: While the initial material cost of steel-plastic composite pipe is higher than PVC or standard polyethylene, it is typically 20-30% less expensive than stainless steel. When considering total lifecycle costs including installation, maintenance, and replacement, steel-plastic composite pipes often prove more economical due to their 50+ year lifespan and minimal maintenance requirements. The lightweight nature also reduces transportation and handling costs compared to metal pipes.
Q: Are steel-plastic composite pipes environmentally friendly?
A: Steel-plastic composite pipes offer several environmental benefits. Their long service life reduces material consumption over time compared to pipes requiring more frequent replacement. The smooth interior surface reduces pumping energy requirements by up to 30% compared to corroded metal pipes. Additionally, our pipes are lead-free and meet NSF/ANSI 61 standards for drinking water safety. At end of life, the materials can be separated and recycled through appropriate channels.