DCM Shriram Consolidated Ltd. Manufactures Calcium Carbide. DCM Shriram Consolidated Ltd. Is ISO 9001-2000, ISO 14001-2004, and OHAS 18001-2007 certified company. The Calcium Carbide is manufactured by mixture of lime and carbon in electric furnace. The Calcium Carbide is used to manufacture PVC resins and also sells in the market to the various industrial users. The demand growth in Calcium carbide is driven by segments like DS compounds due to shift to high purity steel production with increase in production of steel across the country. The other users are DA gas and Tri- Chloro ethylene.