【摘要】 通过对煤矿井下用金属和塑料管材系列产品优缺点分析,提出了具有钢管和塑料管材优点的煤矿井下用聚乙烯涂层复合钢管研制课题,以聚乙烯粉末给水涂层复合钢管为基础,研制出满足煤矿井下使用的内外涂层复合钢管。更多还原

【Abstract】 By analysis to advantage and disadvantage of metal pipe and plastic pipe used in underground mine, the paper indicated the development of compound steel pipe covered with polythene coating. The compound steel pipe covered with polythene powder water-fed coating serving as the basis, the compound steel pipe covered with inner and outer coatings was developed, which not included the advantage of steel pipe and plastic pipe, but is suitable for employment in undergound colliery.更多还原