Mun Siong Engineering Limited provides mechanical and electrical engineering services for the oil and gas, process, petrochemical, energy, chemical, power, and pharmaceutical industries worldwide. The company provides engineering services; and electrical and instrumentation works for the process industry. It also offers construction services that include the design, fabrication, and erection of steel structures/fixed equipment; design, prefabrication, and installation of piping works; installation of static and rotating equipment; construction of tanks; design and prefabrication of pre-assembled modules; design and site installation of electrical and instrumentation works; and construction management of plants and refineries. In addition, the company provides maintenance services, such as rotating and static equipment, electrical and instrumentation, column/vessel heat exchangers, storage tank, and plant turnarounds/shutdown maintenance services; furnace maintenance works; new or existing pipeline works; condition monitoring; structural modifications, additions, or repairs; valve management, valves change-out, servicing, and certification; divestment of plant equipment; and isolation and replacement of parts and equipment. Further, it offers an array of specialized services, such as fabrication, plugging, and retubing of heat exchangers; water jetting; mechanical decoking and air pigging; rotating equipment services; grit blasting- curran international; protective coatings; tube shooting and hydro drilling; trenchless pipe rehabilitation; and maintenance and repair of waterous pumps, as well as rotating equipment services, which include field, workshop, supply & repair of mechanical seals, and maintenance & repair of waterous pumps. Additionally, the company provides scaffolding, insulation, and painting services. The company was incorporated in 1969 and is headquartered in Singapore.