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SAIL & TATA are main vendors for our Raw Materials.
Billets/Slabs/Blooms strictly conforming to IS:2830 are used for rolling into the required sizes & sections which are further put to rigorous tests i.e. Complete Chemical Analysis with IR Spectrometer & Ultrasonic Tests. Thereafter the raw material is slashed into assorted sizes as needed and finally fed to 80 feet long oil fired pusher furnace to attain and maintain constant temperature then rolled.
Bloom/Billets of DSP-SAIL contain medium Manganese and low Sulphur and Manganese are used. Sulphur and Phosphorous are impurities of steel. Sulphur forms a network at the grains boundaries of steel. This constitutes a low melting point and causes a lack of cohesion between the grains of the steel when it is hot worked. The property of being weak at high temperature is known as hot shortness. High Sulphur and high Phosphorous (0.09 to 0.13 %) is not satisfactory for applications requiring resistance to shock.
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