PE Steel Belt Reinforced Helical Corrugated Pipe
PE Steel Belt Reinforced Helical Corrugated Pipe
Implementation Standard: CJ/T 225-2011.
Material: Polyethylene (PE) resin: content ≥90%
Caliber range: Nominal outer diameter DN200mm – DN2600mm
Use: Municipal engineering; architectural engineering; Industrial applications; Roads and Mining; Agriculture, forestry and water conservancy; Cable protection.
Features: High strength, large caliber; Corrosion resistance and long lifespan; Reliable performance; Excellent hydraulic performance; Good flexibility and impact resistance; Lightweight and easy to construct; Safe and environmentally friendly.
Custom orders are supported.
Description
1.Product Introduction
The PE steel belt reinforced helical corrugated pipe is a type of double-walled helical corrugated pipe formed by winding and compounding high-density polyethylene (HDPE) as the matrix with a wave-shaped steel belt coated with adhesive resin as the primary supporting structure.
This unique “steel-plastic composite” structure ingeniously combines the high strength of steel with the corrosion resistance of plastic. The steel belt ensures the pipe’s core ring stiffness, while the outer polyethylene layer provides excellent resistance to chemical corrosion and abrasion. It is primarily used in non-pressurized or low-pressure buried drainage and sewage systems, serving as a superior upgraded alternative to traditional concrete and cast iron pipes in modern municipal, mining, and other underground pipeline engineering projects.
Parameter Item | Technical Specifications |
Executive Standard | CJ/T 225-2011 |
Diameter Range | Nominal Outer Diameter DN200mm – DN2600mm |
Ring Stiffness Grade | SN8, SN10, SN12.5, SN16 (Unit: kN/m²) |
Primary Raw Material | Polyethylene (PE) Resin: Content not less than 90% |
Yield Strength | 160-210 MPa |
Tensile Strength | 270-350 MPa |
Medium Temperature | For long-term use, not exceeding 45°C |
Impact Performance | TIR ≤ 10% |
Ring Flexibility | No rupture, no separation |
Oven Test | No delamination, no cracking |
Seam Tensile Strength | ≥ 1460 N |
3.Connection Methods
- Extrusion Welding:Performed using an extrusion welding gun and dedicated welding rods to create a strong, fused joint.
- Heat-Shrink Sleeve/Collar Connection:A heat-shrink sleeve is heated evenly using a torch, causing it to contract and form a tight seal around the joint. In practice, adjustable roller supports are often used to align the pipe ends and facilitate uniform 360° welding, ensuring joint quality.
- Repair Coupler/Clamp Connection:Allows for quick and easy installation.
- Electrofusion Band Connection.
- Electrofusion Socket Fusion:This specialized connection method is particularly suitable for underground drainage systems in settings like chemical plants where stringent corrosion resistance requirements exist.
4.Key Advantages & Selling Points
- High Strength, Large Diameter:Thanks to the embedded corrugated steel belt, the pipe achieves high ring stiffness (up to SN16 or higher), enabling it to effectively withstand heavy external loads after burial. With a wide diameter range, it is particularly suitable for large-diameter drainage and sewage engineering projects.
- Corrosion Resistance & Long Service Life:The HDPE material offers outstanding resistance to chemical corrosion, is not easily degraded by chemicals in wastewater or soil, and has a service life exceeding 50 years.
- Reliable Performance:The composite materials are bonded in a molten plastic state, ensuring strong adhesion, high peel strength, and an overall dependable pipe structure.
- Excellent Hydraulic Characteristics:The smooth inner wall minimizes flow resistance, enhances water conveyance capacity, and reduces scaling.
- Good Flexibility and Impact Resistance.
- Lightweight and Easy Installation:Compared to traditional materials like concrete pipes, it is significantly lighter, facilitating transportation and installation, effectively reducing construction costs and time.
- Safe and Environmentally Friendly:The product is non-toxic and pollution-free, meeting the environmental requirements of modern engineering projects.
5.Product Applications
- Municipal Engineering:Urban underground sewage pipelines, rainwater collection systems, stormwater and sewage separation renovation projects.
- Large-Scale Infrastructure Construction:Seepage and drainage systems for highways and railways.
- Industrial Sector:Mine drainage, underground drainage in chemical plant areas (note: appropriate connection methods must be selected to meet corrosion resistance requirements).
- Other Fields:Agricultural drainage, drainage systems for large-scale venues, etc. This type of pipe is also commonly selected for stormwater and sewage separation projects within ecological management initiatives such as the “One Clear Stream Flows into the Yellow River” project.
6.Testing & Certifications
- Inspection Standards:Testing is conducted in accordance with the industry standard CJ/T 225-2011.
- Inspection Items:These include, but are not limited to, appearance, dimensions, ring stiffness, impact performance, peel strength, ring flexibility, oven test, and seam tensile strength.
- Inspection Agencies:Testing can be commissioned to qualified professional inspection institutions (such as Zhongyan Guojian, etc.), which can issue authoritative inspection reports with accreditations like CMA and CNAS.
- Quality Management System:Reputable manufacturers are typically certified under the ISO9001 Quality Management System, ensuring stable and controllable product quality.
7.Manufacturing Process Flow
- Material Preparation and Treatment:The primary raw materials are high-density polyethylene (PE) resin, high-strength steel belt, and special adhesive resin. The steel belt must be processed to ensure it is free of oil and rust.
- Steel Belt Forming and Coating:The steel belt is rolled into a corrugated shape to serve as the main supporting structure and is then coated with adhesive resin on its surface.
- Winding and Bonding:While the plastic material is in a fully molten state, the coated corrugated steel belt and polyethylene are combined using a helical winding process to form the dual-wall pipe. The layers bond firmly in the molten state, ensuring the pipe’s integral structural integrity.
- Cooling and Shaping:The wound pipe is cooled to set its shape.
- Cutting and Trimming:The pipe is cut to specified lengths, and the cut ends are trimmed to ensure a smooth, burr-free finish.
- Inspection and Marking:The pipes undergo inspection for appearance, dimensions, and performance. Qualified products are then printed with product information.
8. Packaging and Delivery
- Packaging Method:The ends of the pipes are given protective packaging to prevent impact damage during transportation and storage.
- Standard Lengths:Common pipe lengths include 6 meters, 9 meters, and 12 meters. Custom lengths are also available based on project requirements.
- Supply Capacity:Reputable manufacturers possess large-scale production capabilities, ensuring timely supply for major projects.
9. Sales Service
- Pre-Sales Service:Provide product technical consultation, design proposal support, and engineering selection recommendations.
- During-Sales Service:Can provide detailed product technical documentation. Some manufacturers can offer on-site technical guidance during construction to ensure standardized installation.
- After-Sales Service:A dedicated service hotline is established for prompt response to customer inquiries. We provide a responsible product quality commitment. Under normal installation and usage conditions, any quality issues will be addressed with free repair or replacement.
10. Company Strengths
- Focus on R&D:Significant investment in equipment upgrades and patent development.
- Comprehensive Product Range & Certification:As one of the more diversified pipe manufacturers, we have passed a series of international system and product certifications, ensuring product quality.
- Core Business Philosophy:We uphold the operating principle of “integrity as the foundation, trust as the market principle” and implement a strict commitment system for product quality.
Zhongcai(Sancai) Pipe has 20 years of industry experience and serves over 500 customers worldwide. Its advantages include:
- Advanced production capacity: Automated production line with an annual output of over 100000 tons, meeting large-scale demand. R&D Strength: Collaborate with universities to continuously innovate products, such as anti-static PE pipes. Customer case: Successfully participated in the Asian municipal water supply project, with a customer satisfaction rate of 98%. Environmental Commitment: Use recyclable materials, reduce carbon footprint, and support green buildings.
- Strict quality control: Establish a sound quality management system, implement full process quality monitoring from raw material procurement to product delivery, and rigorously inspect every link to ensure reliable product quality.
- Rich industry experience: With years of deep cultivation in the pipe and fittings industry, we have accumulated rich project experience and successfully served numerous large-scale municipal, construction, industrial and other projects, winning widespread recognition and praise from customers.
