SOUTH BAY WELDING South Bay Welding has been serving the steel fabrication needs of clients in Southern California for over 45 years. Incorporated in 1973, we are still a family owned and operated company, bridging the gap between small hand-crafted fabrication and large structural steel production. With two shops, numerous field crews comprised of long-term dedicated employees, and over 200 years of combined experience among our management, we take great pride in providing high-quality product to each and every one of our clients.