Rangaítear an cineál iarnróid de réir cileagraim in aghaidh an mhéadair d'fhad iarnróid. Mar shampla, is iad ráillí cruach a úsáidtear in iarnróid na Síne ná 75kg/m, 60kg/m, 50kg/m, 43kg/m agus 38kg/m.classified trí iarratas: GNEE Soláthairtí Iarnróidiarnród craein.
| Aicmiú | Airde (mm) | Ceann (mm) | Bun (mm) | Tiubh (mm) | Meáchan (kg/m) | |
| Iar -iarnród éadrom | 8 kg/m | 65 | 25 | 54 | 7 | 8.42 |
| 9 kg/m | 63.5 | 32.1 | 63.5 | 5.9 | 8.94 | |
| 12 kg/m | 69.85 | 38.1 | 69.85 | 7.54 | 12.2 | |
| 15 kg/m | 79.37 | 42.86 | 79.37 | 8.33 | 15.2 | |
| 18 kg/m | 80 | 40 | 80 | 10 | 18.06 | |
| 22 kg/m | 93.66 | 50.8 | 93.66 | 10.72 | 22.3 | |
| 24 kg/m | 107 | 51 | 90 | 10.9 | 24.46 | |
| 30 kg/m | 107.95 | 60.33 | 107.95 | 12.3 | 30.1 | |
| Iar -iarnród trom | 38 kg/m | 134 | 68 | 114 | 13 | 38.733 |
| 43 kg/m | 140 | 70 | 114 | 14.5 | 44.653 | |
| 45 kg/m | 145 | 67 | 126 | 14.5 | 45.546 | |
| 50 kg/m | 152 | 70 | 132 | 15.5 | 51.514 | |
| 60 kg/m | 176 | 73 | 150 | 16.5 | 60.64 | |
| Iarnród CRANCE | Qu 70 | 120 | 70 | 120 | 28 | 52.8 |
| QU 80 | 130 | 80 | 130 | 32 | 63.69 | |
| Qu 100 | 150 | 100 | 150 | 38 | 88.96 | |
| Qu 120 | 170 | 120 | 170 | 44 | 118.1 | |
Toisí iarnróid troma 60kg
Is féidir linn líne iarnróid a dhearadh mar do riachtanas, agus is féidir linn líne iarnróid mianadóireachta agus líne ghluaiseachta craein a thógáil, is féidir leis na dúntóirí uile inoibrithe a sholáthar freisin.Déan teagmháil linnLe haghaidh tuilleadh eolais.