OPC 33 GRADE CEMENT
OPC 33 grade cement means ordinary portland 33-grade cement. In these, the number 33 represents the compressive strength of cement at end of 28 days of curing and tested as per Indian standard code.
OPC 43 GRADE CEMENT
The OPC 43 Grade cement gives compressive strength at end of 28 days curing is 43 N/mm. These cement grades are used for making a concrete mix of higher grade up to M 30 grade of concrete.
OPC 53 GRADE CEMENT
OPC 53 Grade cement is required to conform to BIS specification IS:12269-1987 with a designed strength for 28 days being a minimum of 53 MPa or 530 kg/sqcm.