Prism Cement is a cement manufacturer in central India that produces Ordinary Portland Cement (OPC). OPC is made by grinding clinker with gypsum, which is obtained by burning limestone at a higher temperature. OPC is available in three grades, grade 33, grade 43, and grade 53, which denote the compressive strength obtained after 28 days of testing. OPC is used in pavements and sidewalks, reinforced concrete buildings, bridges, railway structures, tanks, reservoirs, culverts, sewers, water pipes, and masonry units.