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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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