Rail model to distinguish between: 8kg / m, 12kg the / m, 15kg / m, 18kg the / m, 22kg / m, 24kg / m, 30kg / m, 38kg / m, 43kg / m and other models. Distinguish by almost exactly the turnout numbers: 2, 3, 4, 5, 6, 7, 8, 9, on the 10th. Can be divided by type: low-alloy steel, the entire cast and rail fight the system two. Product implementation MT/T2-95 standard design.