PRODUCTS CATEGORY

HDPE plastic-steel winding drain pipe is the production equipment and production technology introduced by our company with huge investment, and it is a technologically leading product produced in strict accordance with national standards. The product has excellent comprehensive performance, excellent cost performance, and can be wound on site according to the needs of the project. Water pipe.

HDPE plastic-steel wound drain pipe is made of steel-plastic composite special-shaped strip by spiral winding welding (extrusion welding on the lap surface). The formed pipe has a spiral straight rib structure, and the outer surface of the pipe wall is reinforced by ribs surrounded by equal spacing spirals. The ribs are composed of ordinary carbon structural steel strip coated with polyethylene, and the steel strip and polyethylene are integrated by polyethylene coating. The polyethylene pipe wall constitutes a closed fluid channel, and the reinforced steel strip constitutes the ring stiffness of the pipe. The thickness and width of the reinforced steel strip are designed and determined according to the different requirements of pipe diameter and ring stiffness. Therefore, the HDPE plastic-steel wound drain pipe has the advantages of excellent cost performance, large diameter, convenient transportation, and simple installation. The product perfectly combines all the advantages of ordinary pressureless plastic pipes and strengthens the high strength of steel ribs, which can fully meet the needs of engineering applications. various needs

Product Specifications:

Performance Features:

It can be seen from the structural characteristics of the wound pipe that it combines the strength of the steel strip and the excellent chemical properties of the plastic, which makes it have the following characteristics:

1. Safe and reliable ring stiffness:

Since the elastic modulus ratio of the two materials of steel and plastic is greater than 200 and the weight ratio is greater than 7.85, compared with pure plastic pipes, steel belt reinforcement can easily make pipes, especially large-diameter pipes, have sufficiently safe and reliable ring stiffness and relatively high stiffness. The stiffness and strength of this ring are more durable and stable, making the overall engineering quality stable and reliable for a long time.

In addition, our company can produce SN10 and SN12.5 two ring stiffness that cannot be achieved by other pure plastic pipes, making up for the weakness that the ring stiffness of the larger diameter all-plastic buried drain pipe can generally only reach SN8.

2. Good cost performance:

Due to the use of steel strips to strengthen, and the price of steel is cheaper than that of plastic, plastic-steel wound pipes are more cost-effective than pipes that simply use pure plastic (except for inferior pipes that use recycled materials).

3. Strong wear resistance:

Polyethylene material is a very wear-resistant material. Compared with ordinary pipes, it has obvious wear-resistant advantages.

4. Strong corrosion resistance:

The pipe is not eroded by acid, alkali, oil, etc.; the steel belt is covered with polyethylene plastic, which does not rust and effectively avoids electrochemical corrosion; the polyethylene material is inert to natural chemicals in the soil and can resist a variety of chemicals. This determines the wider use of polyethylene plastic-steel wound drainage pipes, which can transport rainwater, domestic sewage, seawater, industrial sewage, etc.

5. Long service life:

Due to the unique wear resistance and corrosion resistance of plastics, the service life of the pipeline can reach more than 50 years, which greatly reduces the cost of secondary excavation construction of buried pipelines.

6. Good hydraulic characteristics:

The unique properties of HDPE plastic-steel wound drain pipe make the inner wall of the pipe smooth (roughness coefficient n = about 0.01), it is not easy to produce deposition, and the friction is almost unchanged after long-term use. This hydraulic characteristic determines that the water-passing capacity of the pipeline is stronger. When transporting the same flow of sewage, when using polyethylene plastic-steel wound drain pipe, the diameter of the pipe can be reduced, thereby reducing the cost.

At the same time, when laying, the hydraulic slope of HDPE plastic-steel wound drain pipe can be as small as 2% (the minimum hydraulic slope of other pipes such as condensing pipe is 3%), which can effectively reduce the buried depth of the pipeline and greatly reduce the amount of earthwork excavation., thereby effectively reducing the construction earthwork cost.

7. Easy installation and low transportation cost:

Due to the light weight of the pipe, the length of the pipe (6-12 meters), the number of joints during installation, no large lifting equipment is required, and the connection method is simple and fast, which can greatly shorten the construction period. Pipes of different pipe diameters can be set, which can greatly reduce transportation costs.

8. Strong ability to resist abnormal sudden loads:

Due to the high stiffness of the pipe ring and good axial flexibility, when sudden loads and disasters such as uneven soil settlement, groundwater floating, excessive local load on the ground or earthquakes occur, the pipe can resolve the resulting stress through elastic deformation, Avoid leakage or damage at the pipe connection due to excessive stress and deformation. Therefore, this kind of pipe can better adapt to the soft foundation environment.

9. Good flexibility and low temperature impact resistance:

The toughness of the polyethylene material is good, which determines the flexibility of the pipe and can withstand small surface movement without damage. In addition, the low temperature impact resistance of the polyethylene material is good, so that its use under low temperature conditions will not be restricted. In this way, it is determined that the HDPE plastic-steel wound drain pipe can not only be laid in the ground with a high quality condition, but also in the rammed or stabilized plain area.

The above characteristics determine that the HDPE plastic-steel wound drain pipe is a pipeline product with excellent comprehensive performance in the field of buried drainage.

Connection method:

Clamp type elastic link

This connection method is suitable for Dn ≤ 1200mm pipes. The connection structure is composed of three layers, the innermost layer is a thin-walled rubber sleeve, and the tight sleeve plays a sealing role at the end of the tube; the middle layer is a foamed rubber plate with a fixed thickness and good elasticity, which plays a filling role. The tight hoop pressure of the outer stainless steel looper is evenly transmitted to the sealing rubber plate of the inner layer, thereby eliminating the influence of factors such as uneven surface of the tube end, uneven height of the fins and ellipticity on the sealing performance; the outer layer is an open stainless steel looper., through the fastening bolts on the looper, the tightening force of the looper to the inner rubber can be adjusted to ensure sealing, and the stainless steel looper can play a role in the ring of the pipe connection part Stiffness compensates.

Electric fusion connection

The connector used for electric hot-melt welding connection is an electric hot-melt belt. The electric hot-melt belt is a plastic belt made of the same plastic as the coffin plastic with a certain width, a thickness greater than the wall thickness of the pipe, and a length greater than the circumference of the pipe. One side of the plastic belt is inlaid with an electric heating wire mesh forming a loop. The electric hot-melt belt is used as the inner wall of the pipe end to be connected, special tooling is used to press the electric hot-melt belt on the inner wall of the pipe, and a special power supply is used to energize the electric hot-melt belt. Due to the thermal effect of the current, the electric heating wire melts the pipe wall and the surface of the hot-melt belt to form an integral body, and after cooling, a reliable connection is formed. The company has developed matching movable special pneumatic tooling and welding power supply to make the above welding operation process very convenient and reliable.