According to 250km/h passenger dedicated railway 60kg/m steel rail tentative specificationthe standard steel rail length of 250km/h passenger (frieght) dedicated railway is 100m.
Three kinds of curve shortening track that longer than 12.5m standard rail:40mm, 80mm and 120mm, three kinds of steel rail that shorter than 25.0m standard short rail:40, 80, 160mm.