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Why is UHMWPE Pipe widely used in Coal Mine Drainage and Wear-Resistant Pipes?

Pulished on Mar. 11, 2020

As a UHMWPE Pipe Manufacturers, share with you. Ultra-high molecular weight polyethylene wear-resistant pipes are widely used in coal mine drainage pipes. The biggest problem of coal mine drainage pipes is wearing. Corrosion and abrasion are the two major factors that cause pipeline wear to affect the service life of pipelines. The ultra-high molecular weight polyethylene pipe has become the choice of most mining companies due to its excellent performance.

UHMWPE Mining Pipe8

UHMWPE Mining Pipe

Underground coal mine drainage and wear-resistant pipes are mainly used for conveying materials such as pneumatic and pumped slurry. Due to the high hardness of the conveying medium, the wear-resistant pipes mainly include wear-resistant elbows, straight pipes, tees, large and small heads, square joints, and diameter reduction Structural parts such as pipes. Fast flow rate, large flow rate and other characteristics, the transportation medium temporarily continues to impact the pipe wall, wear, corrosion, etc., causing the pipeline fatigue and gradually wear-through, the requirements for wear-resistant pipelines are very high.

UHMWPE Pipe uses ultra-high molecular weight polyethylene, which is a thermoplastic engineering plastic with an average molecular weight greater than 2 million, polymerized by ethylene and butadiene monomers under the action of a catalyst; ultra-high molecular weight polyethylene composite pipe The outer layer is steel pipe, which has strong impact resistance, high pressure resistance, and prevents the creep of the inner lining pipe; the ultra-high molecular weight polyethylene lining has excellent wear resistance (its abrasion resistance is 3- 6 times), pressure resistance, corrosion resistance, stable chemical properties, difficult to scale, smooth inner wall, small friction coefficient, small pressure loss during slurry transportation, reducing transportation costs, greatly improving transportation efficiency; ultra high molecular weight Polyethylene pipe has extremely high impact resistance. The impact toughness of this product is very high in the existing engineering plastics. The cantilever impact test can achieve no damage; the ultra-high molecular weight polyethylene pipe has the best environmental stress crack resistance. The elastic modulus is more than 1.5 times of PE100, and the fatigue strength is more than 500,000 times; the standard length of the ultra-high composite pipe is 12 meters, which is easy to install. However, the ultra-high-molecular-weight polyethylene pipe has excellent low-temperature resistance, and its impact strength reaches a higher value at minus 40 ° C. It can still maintain good performance at extremely low temperatures, and is especially suitable for medium transport pipes in cold areas.

UHMWPE Mining Pipe is a thermoplastic engineering plastic with excellent characteristics such as abrasion resistance, impact resistance, corrosion resistance, stress crack resistance, low temperature resistance, non-toxic sanitation, etc. It combines the superior properties of almost all plastics.

In summary, many properties of ultra-high-molecular-weight polyethylene pipes are in line with the characteristics of underground drainage pipes in coal mines, and their durability and comprehensive price are suitable compared to other wear-resistant pipeline products.