News information

1、 Materials

The raw material for the production and manufacture of PVC double wall corrugated pipe is polyethylene, and the raw material for the production and manufacture of PE double wall corrugated pipe is high-pressure polyethylene.

2、 Specification and model

PVC double wall corrugated pipe diameter range Φ 110mm- Φ 1000mm, PE double wall corrugated pipe, diameter range Φ 110mm- Φ 2000mm。

3、 Structure and characteristics

PVC double wall corrugated pipe and PE double wall corrugated pipe are two kinds of pipes developed from different raw materials. The pipes have different structures and characteristics

1. Common characteristics of plastic double wall bellows: plastic double wall bellows is a unique pipe with smooth inner cavity, wavy surface and hollow inner and outer walls. The cross section of wall thickness is of double-layer structure, and its inner cavity is smooth and flat. It is a pipe with ladder shaped hollow structure arranged at a fixed distance on the surface. Its characteristics are as follows:

(1) High compressive strength

(2) The inner cavity is smooth and the friction resistance is small

(3) Light weight, convenient transportation and installation

(4) Silica gel ring hot melt connection, simple engineering construction

(5) The anti leakage effect is very good

(6) It can resist the corrosion of various organic chemicals, and there is no scale in the pipe

Note:

The national industry standard of PVC double wall corrugated pipe is - GB / t18477.1

The national industry standard of PE double wall corrugated pipe is - GB / t19472.1

(2) The physical properties are shown in the following table:

4、 Market price status:

Note:

(1) The ring stiffness grade of the above PVC and PE double wall corrugated pipe is SN8 and conforms to the national industry standard, and the pipe specification and model is Φ 200x1.4

(2) The project cost is commodity price + project construction cost + other additional expenses

5、 Project construction mode

The construction method of PVC double wall corrugated pipe is the same as that of PE double wall corrugated pipe.

(1) The installation position of the silicone ring shall be in the groove between the second and third wavy patterns of the jack. The total number of installed sealing rings depends on the provisions of the design scheme. When two sealing rings are selected, it is proposed to separate one wavy pattern between the two sealing rings;

(2) Before the socket, the internal and external surfaces of the socket connection socket shall be cleaned, the sealing ring shall be inserted into the socket, and the lubricating liquid (generally soap liquid) shall be coated on the working table and the surface of the silicone rubber ring inside the socket. The insertion direction is the water direction, Point to the socket connection axis, use human resources or set wood partition plate, and slowly insert the installed pipe into the socket cavity until the bottom end with crowbar;

(3) After the socket is, the same soil layer is used to fill the compactness of the embedded concave groove;

(4) The pipeline shall be laid in parallel, and the allowable corner adjacent to the center line of section II pipeline shall not exceed 2 degrees.

6、 Main use category

In addition to the industries where the two kinds of pipes are used together, such as municipal road engineering, underground drainage pipe sewage treatment engineering project of residential community, expressway engineering project and farmland irrigation canal, PE double wall corrugated pipe can also be used in chemical plant, mine mining and liquid transportation engineering project, with a wider scope.