PE Mine Ventilation Pipe

The company is in accordance with the national coal mining industry standard MT588. 1-2005 (the first part of polyethylene pipes for plastic pipes used in mines), MT181-88 "Safety Inspection Specifications for Plastic Pipes Used in Mine", AQ1071-2009 "Non-metallic gas transmission pipes for coal mines" According to the requirements of "Safety Technical Requirements", organize production and inspection, and obtain the [MA] coal mine safety mark certificate for polyethylene pipes used in coal mines.

PE mine pipe is suitable for the places where the normal temperature does not exceed 40℃ for underground water supply, exhaust, air pressure, shotcrete and gas discharge. The maximum working pressure of the pipe is 1.6Mpa.

Definition of PE coal mine pipe?

Mining pipes are extruded and formed by adding polyethylene resin as the main raw material and adding appropriate amount of additives. In addition to outstanding antistatic properties and flame retardancy, the pipe also has the advantages of high strength, good processing performance, strong environmental adaptability, excellent stress crack resistance, and good creep resistance.

What are the raw materials for the production of PE mining pipes?

The raw material is a special material made of PE resin with high-efficiency antistatic agent and high-quality flame retardant.

What are the characteristics of special raw materials for PE mining pipes?

The special raw material for PE mining pipe not only has excellent long-term compressive strength, but also has excellent resistance to slow stress crack growth and rapid stress propagation. HE3490-LS is a special material for black PE100 pipe, and it also has excellent anti-sagging performance.

What are the product specifications of PE mining pipe? (unit: mm)

φ20, φ25, φ32, φ40, φ50, φ63, φ75, φ90, φ110, φ125, φ160.

What is the implementation standard of PE mining pipe?

Q/JDG·02—2006 "Polyethylene Pipes for Coal Mine".

What are the product characteristics of PE mining pipe?

In addition to outstanding antistatic properties and flame retardancy, it also has the advantages of high strength, good processing performance, strong environmental adaptability, excellent stress crack resistance, and good creep resistance.

The scope of application of PE mining pipe?

Mine air pipes; mine water pipes; mine shotcrete pipes; mine gas pipes.

Product Description:

1. The product implementation standard is: CJ/T189-2007 "Steel mesh skeleton plastic (polyethylene) composite pipe and pipe fittings".

2. Composite pipes of the same specification and different pressure levels have different wire diameters and grid parameters.

3. The nominal pressure is the maximum working pressure of the pipe to transport the water medium at 20°C. If the medium temperature changes, it should be corrected according to the "nominal pressure correction coefficient value".

4. The color of the pipe is generally black, the gas pipe is black or blue, and the black pipe should have a blue color bar.

5. Pipe fixed length: 6m, 12m, can also be determined according to user requirements and transportation conditions

Performance comparison of steel mesh skeleton plastic composite pipe and welded steel skeleton plastic composite pipe:

First: the production process of steel mesh skeleton plastic composite pipe and welded steel skeleton plastic composite pipe is different

1. Composite structure. The welded steel skeleton plastic composite pipe is based on ordinary carbon steel wire. Although the steel wire is relatively thick, the tensile strength is only 400Mpa, the process is complicated, and the product quality fluctuates greatly. Steel mesh skeleton plastic (composite pipe, high-strength steel wire (above 1950Mpa) is used as the base material, and the steel wire is wound on the pipe in a 54.7-degree oblique direction, so that the pipe can be axially and The force is uniformly distributed in the circumferential direction, and a high safety factor is adopted when determining the diameter and density of the steel wire.

2. Water channeling on the end face. Welded steel skeleton plastic composite pipe, due to the inevitable gap between the PE material pipe and the steel plate, when the pipe is cut, the end face is sealed, but the seal is easy to fall off when heated with electrofusion pipe fittings. After installation, the medium will enter the gap between the steel plate and the plastic, resulting in a decrease in the pressure bearing capacity of the entire pipeline system. As a result, the pipe will be damaged at low pressure, resulting in the failure of the pipe.

Second: the product standards of steel mesh skeleton plastic composite pipe and welded steel skeleton plastic composite pipe are different. The steel mesh skeleton plastic composite pipe implements CJ/T189-2007, and the steel skeleton composite pipe implements the CJ/T123-2004 standard;

Third: The steel skeleton composite pipe can be overhead, but the steel mesh composite pipe cannot be overhead