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ＴＳ－７０Ａ是一种新型的钢闸门支承滑道，是以铸造的青铜钉板为基体，在钉间的间隙中充填增强聚四氟乙烯（作为润滑剂）而成。在室内进行了广泛的试验，在江西柘林水电站放空隧洞的工作闸门上进行了原型测试。试验和测试结果表明，这种闸门滑道具有如下特点：承载能力大，摩擦系数小，当线荷载大于６０ｋＮ／ｃｍ时，摩擦系数小于０．１０；摩擦系数几乎与钢轨半径无关；静摩擦的时间效应小，经长时间恒压，静摩擦系数只增加约２０％；动静摩擦系数相差不大，两者的比值为０．８５～０．９０。
TS-70A is a new type of steel gate support slideway, which is made of cast bronze nail plate and filled with reinforced PTFE (as a lubricant) in the gap between the nails. A wide range of experiments were conducted indoors and prototype tests were carried out on the working gates of the vent tunnels at Zhelin Hydropower Station in Jiangxi Province. The test and test results show that the gate slide has the following features: large load capacity and small coefficient of friction; when the linear load is greater than 60 kN / cm, the coefficient of friction is less than 0.10; the coefficient of friction is almost independent of the radius of the rail; The effect is small, after a long period of constant pressure, static friction coefficient increased by only about 20%; static friction coefficient is not much difference between the two ratio of 0.85 ~ 0.90.