Steel Band Reinforced PE Composite Spiral Corrugated Pipe
The development and construction of the project will drive the commercial facilities reconstruction of the central city's southwest part, the commercial environment improvement and the commercial culture construction. It will immensely enhance the commerce value of the place so that it can strongly promote the development of modern service industry and will increase local financial revenue.
Buried steel band reinforced polyethylene(PE) spiral corrugated pipe for sewage is spirally twined, extruded and compounded into a unity in the production lines, taking polyethylene as the outer basic material and corrugate steel band which is coated with high-performance adhesive resin and bended into the shape as the main structural support.
This kind of composite pipes combines the excellent advantages of high rigidity and strength of steel pipes and anticorrosion, anti-abrasion and flexibility of plastic pipes together. As a result, it not only reaches three ring stiffness grades SN8, SN12.5 and SN16, but also solves the problem of anticorrosion of steel pipes. This makes up the shortage that large diameter buried plastic drainage pipes can only reach SN8 ring stiffness grade.
Hot melt welding, heat-shrinkable tubes (tapes) and electro fusion tapes are adopted to connect the pipelines. They can meet different requirements of various projects and working conditions, and realize reliable sealing and convenient installation. Such pipeline is the best and preferred product to substitute traditional large diameter drainage pipes at present.
Performance and characteristics:
Excellent anticorrosion property:pipe material is anti-corrosive polyethylene from acid, alkali and oil content in sewage and wastewater.
Strong outside impact resistance:This is a flexible pipeline. Upon outside impact, it can well recover its original shape and will not fracture even in foundation sedimentation.
Strong ageing resistance:Material properties can guarantee more than 50 years’ service life at 20°C, thus it has good property of ageing resistance.
Excellent cold endurance: The pipeline will not break or leak at the low temperature of -60°C.
Light weight:pipe weight is just 1/8 that of same sized concrete pipes, 2/3 that of the traditional plastic corrugated pipe. It is convenient to transport and easy to install. No large equipments is needed.
Convenient connection:diversified and simple connection types, thus prompt and easy installation on site is available.
Simple execution of works with lower cost: As the pipeline is light in weight and easy to connect, it has little requirements on the excavation works. Much time and expenses could be saved in municipal drainage constructions.
Perfect anti-abrasion:Smooth inner wall and low friction coefficient bring strong capability to transport media.
Good environmental performance: The polyethylene itself is a non-toxic and recyclable material. It will not pollute the environment.
Application scope
1. Municipal underground wastewater and sewage pipelines
2. Drainage and sewage pipelines in factories and sewage treatment plant
3. Ventilation system pipelines
4. Electrical and optical cable protection use pipeline system
5. Seawater and rainwater transmission pipelines
6. Water gathering and water percolation system
7. Agricultural irrigation water pipelines
8. Production of chemical processing vessel
Physical-mechanical characteristic:
Items | Index | Testing Method | |
Ring stiffness | SN8 | ≥8 | GB/T9647-2003 |
SN12.5 | ≥12.5 | ||
SN16 | ≥16 | ||
Impact property | TIR≤10 | GB/T14152 | |
Peel strength(20°C±5°C)N/cm | ≥70 | refer to appendix A of CJ/T225-2006 | |
Ring flexibility | no fracture; double surfaces no falling apart | GB/T9647 | |
Oven test | non-stratified; drying crack | refer to 8.4.5 of CJ/T225-2006 | |
Tensile strength(N) of polyethylene connection interface | ≥1460 | GB/T8804 | |
Creep rate | ≤2 | GB/T8042 | |
Specifications:
No. | DN/ID | Average Min Inner Diameter (Dim.Min) | Min Inner Layer Thickness(E1.Min) | Min Lamination (Emin) | Max Screw Pitch(Pmax) | Min Steel Band Thickness (Tmin) | Main Anticorrosion Layer-Thickness(E2.min) |
1 | 300 | 294 | 2.5 | 4.0 | 55 | 0.4 | 2.5 |
2 | 400 | 392 | 3.0 | 4.5 | 65 | 0.4 | 2.5 |
3 | 500 | 490 | 3.5 | 5.0 | 75 | 0.5 | 3.0 |
4 | 600 | 588 | 4.0 | 6.0 | 85 | 0.5 | 3.0 |
5 | 700 | 673 | 4.0 | 6.0 | 110 | 0.5 | 3.5 |
6 | 800 | 785 | 4.5 | 6.5 | 120 | 0.7 | 3.5 |
7 | 900 | 885 | 5.0 | 7.0 | 135 | 0.7 | 3.5 |
8 | 1000 | 985 | 5.0 | 7.0 | 150 | 0.7 | 3.5 |
9 | 1100 | 1085 | 5.0 | 7.0 | 165 | 0.7 | 3.5 |
10 | 1200 | 1185 | 5.0 | 7.0 | 180 | 0.7 | 3.5 |
11 | 1300 | 1285 | 5.0 | 7.0 | 190 | 1.0 | 4.0 |
12 | 1400 | 1385 | 5.0 | 7.0 | 200 | 1.0 | 4.0 |
13 | 1500 | 1485 | 5.0 | 7.0 | 210 | 1.0 | 4.0 |
14 | 1600 | 1585 | 5.0 | 7.0 | 210 | 1.0 | 4.0 |
15 | 1800 | 1785 | 5.0 | 7.0 | 210 | 1.0 | 4.0 |
16 | 2000 | 1985 | 6.0 | 8.0 | 210 | 1.0 | 4.0 |
Comments:
- Carried Standard: CJ/T225-2006 for Buried Steel Band Reinforced Polyethylene (PE) Spiral Corrugated Pipe for Sewage issued by Urban Construction Ministry of P.R.C
- Ring Stiffness Grades:SN8,SN12.5,SN16
- Fixed Pipe Length:6or9 meters; other lengths negotiated by supplier and buyer.
