OUR PRODUCTS
TMT BAR
Our Company is making only TMT Bar as final product under its brand name “SIDHBALI SARIA”.
“SIDHBALI SARIA” the quality steel brand, a nation that is strong infrastructure-wise denotes development in real terms. Be the construction of skyscrapers, incredibly stoic highways, dams and bridges, all have been possible because of the immaculately designed steel reinforcement bars that lie within these unmovable structures having enormous strength and one steel manufacturing company which has the credit of imparting strength to all major civic constructions is the immensely strong “Sidhbali TMT Bars”.
Imbibed with high gripping power, all grades of unbeatably strong Sidhbali TMT Bar displays high properties like earthquake resistance, fire & heat resistance and maximum load-bearing capacity and manufactured under highly supervised conditions through the most advanced and sophisticated techniques, Sidhbali TMT bar inherits the chemical, physical and mechanical features right from the raw material phase, which during the course of production get intense and the final product boasts of its qualities unimpeachably. Sidhbali TMT Bar also possesses other impeccable features like easy bending ability, easy welding ability, high tensile strength, high durability and rust resistance, which together have made Sidhbali TMT Bar the ultimate choice of the entire construction sector.
We are presently manufacturing TMT Bars ranging from 8mm to 32mm Dia through our fully automatic rolling unit.
M.S. Ingot
M.S. Ingot is a raw material to manufacture the TMT Bars and Our Company is manufacturing M.S. Ingot also to cater the raw material needs to some extent for self-consumption.
TECHNOLOGY
History
For year’s, Bamboo has been used by man for construction activities, later it has been replaced by CTD (Cold Twisted Deformed steel rods) or TOR steel rods. The manufacturers adopted the “Cold Twisting Process” in which the naturally cooled rods were twisted by means of motors. Thus the molecular structure of the core steel is weakened. Thus it should not be used for construction activities.
Now, the TMT (THERMO MECHANICALLY TREATED) steel bars have emerged.
Description of TMT BAR
TMT Bars, Thermo mechanically treated bars are high strength deformed steel bars used in reinforced cement concrete (RCC) work manufactured with the help of advancement of technology. TMT bars are latest production in MS steel bars and have superior properties such as strength, ductility, welding ability, bending ability and highest quality standards at international level.
Our TMT Bar Quality Standards as per IS-1786..
CHEMICAL COMPOSITION
| Constituent | Percent, Maximum | ||||||
| Fe 415 | Fe 415D | Fe 500 | Fe 500D | Fe 550 | Fe 550D | Fe 600 | |
| Carbon | 0.30 | 0.25 | 0.30 | 0.25 | 0.30 | 0.25 | 0.30 |
| Sulphur | 0.060 | 0.045 | 0.055 | 0.040 | 0.055 | 0.040 | 0.040 |
| Phosphorus | 0.060 | 0.045 | 0.055 | 0.040 | 0.055 | 0.040 | 0.040 |
| Sulphur & Phosphorus | 0.110 | 0.085 | 0.105 | 0.075 | 0.100 | 0.075 | 0.075 |
NOMINAL CROSS - SECTIONAL AREA AND MASS
| S.No. | Normal Size (mm) | Cross Sectional Area (mm) | Mass per meter (kg) | Permissible Tolerance for individual Sample |
| 1 | 8 | 50.3 | 0.395 | -7% |
| 2 | 10 | 78.6 | 0.617 | -7% |
| 3 | 12 | 113.1 | 0.888 | -5% |
| 4 | 16 | 201.2 | 1.580 | -5% |
| 5 | 20 | 314.3 | 2.470 | -3% |
| 6 | 25 | 491.1 | 3.850 | -3% |
| 7 | 28 | 615.8 | 4.830 | -3% |
| 8 | 32 | 804.6 | 6.310 | -3% |
MECHANICAL PROPERTIES
| Properties | Fe 415 | Fe 415D | Fe 500 | Fe 500D | Fe 550 | Fe 550D | Fe 600 |
| 0.2% proof stress / Yield stress, min. N/mm2 | 415 | 415 | 500 | 500 | 550 | 550 | 600 |
| Elongation, Min. on Gauge Length 5.65√ A* | 14.5% | 18.0% | 12.0% | 16.0% | 10.0% | 14.5% | 10.0% |
| Total Elongation at max. Force, Min. on gauge Length 5.65√ A*, | - | 5% | - | 5% | - | 5% | - |
| Tensile strength, Min. | 10% more than the actual 0.2% proof stress/yield stress but not less than 485.0 N/mm2 | 12% more than the actual 0.2% proof stress/yield stress but not less than 500.0 N/mm2 | 8% more than the actual 0.2% proof stress/yield stress but not less than 545.0 N/mm2 | 10% more than the actual 0.2% proof stress/yield stress but not less than 565.0 N/mm2 | 6% more than the actual 0.2% proof stress/yield stress but not less than 585.0 N/mm2 | 8% more than the actual 0.2% proof stress/yield stress but not less than 600.0 N/mm2 | 6% more than the actual 0.2% proof stress/yield stress but not less than 660.0 N/mm2 |
The standard tests that are carried out during the production of Sidhbali TMT Bars are:
TEST FOR TENSILE STRENGTH
The tensile strength , percentage elongation, percentage total elongation at maximum force and 0.2 percent proof stress of bars shall be determined in accordance with requirements of IS: 1608 read in conjunction with IS: 2062.
TEST FOR REBENDING ABILITY
The test sample shall be bend to an included angle of 135o using a mandrel of appropriate diameter. The bent piece shall be aged by keeping in boiling water 100oC for 30 min. and then allowed to coll. The piece shall then be bend back to have an included angle of 157.5oc. The test sample shall be considered to have passed the test if there is no rupture or cracks visible to a person of normal or corrected vision on the re-bend portion.
TEST FOR BENDING ABILITY
The test sample when cold shall be doubled over the specified mandrel by continuous pressure until the sides are parallel. The test sample shall be considered to have passed the test if there is no rupture or cracks visible to a person of normal or corrected vision on the re-bend portion.
