1) Flame retardant and anti-static: This product is designed with a unique formula, with anti-static and flame retardant properties exceeding the technical indicators specified by MT558.2-2005 standards.
2) High strength and anti-aging: After testing, the pipe’s impact resistance and anti-aging performance meet the requirements of MT558.2-2005 standards, possessing good toughness and anti-aging properties, not easily brittle, effectively avoiding breakage accidents.
3) Lightweight, easy to disassemble, low density: The unit weight is only 20% of that of steel pipes and 30% of glass pipes. It is easy to disassemble and install, which can significantly reduce labor intensity and save a lot of installation costs and time.
4) Corrosion resistant, cost-effective, long service life: Corrosion resistant, non-scaling, long service life, maintenance-free, saving later anti-corrosion and descaling costs. Its lifespan is far greater than that of steel pipes, with comprehensive benefits being 6-8 times that of steel pipes.
5) Low fluid resistance during pipeline fluid transportation: Strong non-scaling, smooth inner and outer walls, low fluid resistance, especially suitable for transporting high-sulfur, calcium, magnesium ionic water quality underground. PVC coal mine pipe with a diameter of 125mm, brand for double-resistant coal mine pipes?
Gas extraction methods can be divided into three categories based on the source of gas:
1. Extracting gas from nearby coal seams. In multi-coal seam mines, when long wall working faces are mined, the top and bottom rock layers and coal seams (including mineable and unmineable layers) relieve pressure, increasing gas fluidity, resulting in large amounts of gas flowing into the working face, threatening production.
2. Extracting gas from mined-out areas. In some mines, large amounts of gas can be released from mined-out areas; steel pipes can be inserted into the sealed walls around the mined-out area; or holes can be drilled from the passageway to extract gas from the mined-out area.
3. Extracting gas from the coal seam itself. When mining high-gas thick coal seams, the gas primarily comes from the mined layer itself. In Fushun coal mine, before advancing in the coal roadway, holes are drilled through the coal seam from the bottom rock roadway, steel pipes are inserted into the holes, and the area around the hole is sealed, allowing gas to be extracted from the inserted pipe. This method, known as "pre-extraction of gas by drilling," reduces gas threats during mining work due to extraction occurring ahead of excavation and recovery. PVC coal mine pipe with a diameter of 125mm, brand for double-resistant coal mine pipes.
