The gas drainage pipe is specially designed for gas extraction, discharge and transportation in coal mines. It is made of high-strength antistatic and flame retardant composite materials, which meets coal mine safety standards and has excellent corrosion resistance, negative pressure resistance and anti-aging performance.
The inner wall of the pipe is smooth, non-scaling, and the fluid resistance is small, which can efficiently transport gas, and is not easy to absorb deflation and deformation under negative pressure environment. The connection is firm, the sealing is good, there is no leakage, it is safe and stable, and it can adapt to the humid, dusty and complex geological environment underground for a long time. It is a special pipeline for coal mine gas control, ventilation discharge, and safe production.
Excellent air tightness, safe and airtight gas transportation
High-density polyethylene solid wall structure with low gas permeability, effectively blocking gas leakage;
Anti-static and flame-resistant, meeting mining explosion-proof safety regulations
Special mining modified formula, anti-static and flame retardant properties meet the standards, eliminate the hidden danger of gas ignition caused by static sparks, and is suitable for high gas mines;
Comply with MT 181
High toughness and impact resistance, adaptable to complex underground geological environment
Elongation at break ≥800%, good flexibility, resistant to surrounding rock extrusion, tunnel vibration, foundation settlement displacement, and not brittle at low temperatures;
Resistant to medium corrosion and gas associated corrosion components
Resistant to hydrogen sulfide, moisture vapor, mineral dust, underground acid and alkali medium corrosion, no scaling, no aging, no leakage;
Stable pressure-bearing performance, suitable for positive and negative pressure conditions of gas drainage
The negative force can achieve -0.097MPa and can stably withstand changes in gas negative pressure extraction and positive pressure transportation pressure;
Hot melt integrated connection, the interface is sealed and leak-free
Hot melt/electrofusion connection, the interface is integrated with the pipe body, eliminating the risk of gas leakage;
Smooth inner wall with low resistance and high gas extraction efficiency
The inner wall roughness is ≤0.007mm, the air flow resistance is small, and it is not easy to be blocked by dust, which improves the efficiency of gas extraction and transportation;
Convenient and flexible construction, adaptable to underground tunnel layout
The pipe can be bent and coiled in small diameters, reducing joints, suitable for curves and tunnels with differences, and can be laid without excavation;
Light weight, efficient in underground installation and transportation
The weight is much lower than that of steel pipes, which facilitates the erection and installation of inclined lanes and level lanes, reducing construction intensity and construction period costs;
Long service life and low operation and maintenance costs
The designed service life under underground gas drainage conditions is ≥50 years, without anti-corrosion and rust prevention, and subsequent maintenance is simple.
