Constant Engineering Private Limited (CEPL) is promoted by the well known CONSTANT Group established in the year 1987, at Surat. Constant group consists Constant Engineering Private Ltd., Constant Developers Private Limited, Chalakudy, Kerala and Constant Engineering LLC (Oman) . Mr. Davis Antony Thakkolkaran is the Managing Director who is a well experienced technocrat on various fields. CEPL has a workforce of 400 (including staff) at the manufacturing units. Besides, about 1400 to 2000 persons are working at different project sites.

Constant is also in the business of manufacturing industrial gases, hiring of various industrial equipment and trading industrial consumables. It has well equipped manufacturing units at Surat and Jamnagar.