S&B Engineers and Constructors Ltd and Affiliates is a privately held engineering and construction company that provides engineering, procurement, and construction (EPC) services to clients in the refining, petrochemical, chemical, midstream, and infrastructure industries. The company was founded in 1967 and has since grown to become one of the largest EPC firms in the United States. S&B has completed projects in over 20 countries and has a reputation for delivering high-quality projects on time and within budget. The company is headquartered in Houston, Texas and has additional offices in the United States, Canada, and Mexico.