Deformed bar are made of high yield strength steel. Ribs are nothing but projections produced on bars by cold twisting of bar in hot rolled condition. The twist is made according the standard requirements.
Deformed bars are important innovation of steel and they are extensively used as main reinforcement materials in all concrete works like bridges, buildings, precast concrete works, foundations, roads etc. They are available in many sizes varying from 3 mm to 50 mm diameter. The reason why these are more famous than any other bars is because of following advantages
| Size(Inches) | No | Weight Kg/Ft |
| DEFORMED BAR | ||
| 3 / 8 = (10) | 0.188 | |
| 1 / 2 = (12) | 0.271 | |
| 5 / 8 = (16) | 0.482 | |
| 3 / 4 = (20) | 0.752 | |
| 1 = (25) | 1.176 | |
| 1 1/8 = (28) | 1.475 | |
| 1 1/4 = (32) | 1.926 | |
| 1 1/2 = (36) | 2.438 | |