Dor Riz Engineering Company (private joint stock) was incorporated in Tehran, Iran in 1985. It was intended to bring together the considerable expertise available in the country and unite it into cohesive and effective multidisciplinary engineering, procurement, construction and commissioning resource pool.

The shareholders who founded the company had a vast previous experience in various fields as engineering, manufacturing, construction, commissioning and start up of industrial plants.

The shareholders of Dor Riz Engineering Company have always been involved full time in the company to assure reliability and effective performance of the company. They have always assumed the key positions of both the company and its more significant projects.

Today, Dor Riz has over 35 projects, large and small, on its roster, either already completed or in various stages of implementation.

The key factor enhancing companys success is the incorporation of engineering and manufacturing abilities into construction activities. This concept becomes most essential when the plant material originates from abroad and when the number of suppliers engineering/supervision staff are limited. This also enables Dor Riz to make very competitive joint offers, together with the suppliers, by mobilizing local capabilities and resources that in turn become more palatable to most clients.

This approach has enabled Dor Riz to expand its field of activities towards General Contracting (GC) and EPC services particularly in Oil, Gas and Petrochemical Industries.
1.Engineering, Procurement, Construction and Erection of various industrial plants including metal industries, petrochemical and oil industries, power plants, electrical substations utilities, etc. (Civil Works & Electromechanical)
2.Construction of Industrial, Residential, and Office Buildings, Concrete Structures, Steel Structures, Bridges, etc.
3.Revamping and Maintenance of various Industrial Plants.
4.Design, Fabrication, Procurement, and Construction of auxiliary equipment for the balance of plant material of large industries. (EPC Basis)
5.Supporting services for Commissioning and Operation including Supplying Skilled Manpower, Construction Equipment, Repair and Maintenance Works, etc.
6.Carrying out Feasibility and Technical Studies, Technical Training on the Job Training, and other services of this kind.