Overview of Rail Steel
The railroad metal, commonly known as train track steel, is special steel in metallurgical products mainly used for railroad tracks. The rail bears the weight and dynamic load of the train. Its surface wears, and the head is impacted. The rail is subject to large bending stress, too. The complicated press and long-term service bring out damages to the rails.
Specification of Light Rail
| Type | Head Width(mm) | Height(mm) | Bottom Width | Web Thickness(mm) | Theory Weight(kg/m) | Grade | Length |
| 8kg | 25 | 65 | 54 | 7 | 8.42 | Q235B | 6M |
| 12kg | 38.1 | 69.85 | 69.85 | 7.54 | 12.2 | Q235B/55Q | 6M |
| 15kg | 42.86 | 79.37 | 79.37 | 8.33 | 15.2 | Q235B/55Q | 8M |
| 18kg | 40 | 90 | 80 | 10 | 18.6 | Q235B/55Q | 8-9M |
| 22kg | 50.8 | 93.66 | 93.66 | 10.72 | 22.3 | Q235B/55Q | 7-8-10M |
| 24kg | 51 | 107 | 92 | 10.9 | 24.46 | Q235B/55Q | 8-10M |
| 30kg | 60.33 | 107.95 | 107.95 | 12.3 | 30.1 | Q235B/55Q | 10M |
Specification of Heavy Rail
| Head Width(mm) | Height(mm) | Bottom Width | Web Thickness(mm) | Theory Weight(kg/m) | Grade | Length | |
| P38 | 68 | 134 | 114 | 13 | 38.73 | 45MN/71MN | |
| P43 | 70 | 140 | 114 | 14.5 | 44.653 | 45MN/71MN | 12.5M |
| P50 | 70 | 152 | 132 | 15.5 | 51.51 | 45MN/71MN | 12.5M |
| P60 | 73 | 176 | 150 | 16.5 | 60.64 | U71MN | 25M |
Specification of Crane Rail
| Head Width(mm) | Height(mm) | Bottom Width | Web Thickness(mm) | Theory Weight(kg/m) | Grade | Length | |
| QU70 | 70 | 120 | 120 | 28 | 52.8 | U71MN | 12M |
| QU80 | 80 | 130 | 130 | 32 | 63.69 | U71MN | 12M |
| QU100 | 100 | 150 | 150 | 38 | 88.96 | U71MN | 12M |
| QU120 | 120 | 170 | 170 | 44 | 118.1 | U71MN | 12M |
The Function of Steel Rail
-a. Support guide wheels
-b. Provides less resistance to wheel rolling
-c. Linking up and down, transmitting force to sleepers
-d. As a conductor–track circuit
