No.18 Single Turnout with 60kg/m Rails. It applies to Datong-Qinhuangdao heavy load railway and other freight lines or passenger and freight lines. Switch section adopts 60AT elastic flexible switch rail with hidden-type point and the inner side of stock rail is planed of 5mm to increase the thickness of switch rail. Three traction points are set for switch rail. The frog is alloy steel frog or high manganese steel frog. The gradient of 1:40 is applied to the track top or bottom of the turnout. Rail fastenings are adopted to type II elastic rail fastenings which are separated and adjustable.
4、Radius of Curve：1000m
5、Permission Passing Speed on straight line：Passenger Trains≤160km/h ，Freight Trains（Tractive tonnage is 8000 tons and above or axle load is 27 tons）≤100km/h，Other trains≤120km/h