Sadid Company was established in 1963 as a machine manufacturer by Fathi and sons and was registered under the License number of 33302, dated 27/October/1965. Company’s name was registered as Half-light Profile Factories on 07.04.1347 (1968) and then on 25/04/1364 (1985) the company’s name was changed to Semi-light Profile and Pipe Producer of Iran and was registered under entry No. 11607 in the Companies Register of Tehran. In 1989 the company’s name was changed to SADID Industrial Group (public company).In 1993 the company was changed to a holding company and some of its subsidiaries such as Sadid Pipe and Equipment Company (Public Company) and Sadid Tadbir Company were formed through transferring natural persons to legal entities.

Sadid Industrial Group began to invest on 51 percent of Falegh Sanat’ stocks which is one of the public contracting companies in constructing and developing sugar companies and the like. In 2001 Saba Nirou Company was established aiming at producing wind power plants and SIG Company was registered as the first company of its type in England and began to work.

In late 2002, SADID industrial group, in partnership with Offshore Construction and Engineering Company and  Petro Taksan Company, established TASDID Offshore Structure Development Company aiming at running contracting projects in industrial plans, particularly in the marine industry.

To expand its activities, SADID Industrial Group, in partnership with Social Security Investment Company, invested 850 billion Rials, establishing Mahshahr Pipe Company, which is one of the largest pipe manufacturers in Iran. Tavan Power Plant Development and Construction Company, with the mission of developing and constructing power plants and evaluating technical and economic indices of power plant projects, etc …was established in 2004.

According to Article 44 of the constitution, SADID Industrial Group purchased 45% shares of Foolad Gostaresh Company (Steel Expansion Co.) and 38% shares of Road Safety Equipment Company and 95% stake of PETCO (Production of Large Pumps and Water Turbines) from privatization organization between 2007 and 2008, via the auction process.

In line with concentrating on commercial and credential activities of pipe producer companies of the group, SADID Engineering Procurement Company was established in 2009.

In order to run the power plant project including 100 MW wind farm project, Tavan Power Plant Development and Construction Company was established and registered in early 2009 with an impressive 100% ownership of SADID Industrial Group.

In October 2010 over 67 % shares of Sadid Industrial Group in Sadough Religious and Cultural Foundation was transferred to Melting and Rolling Chehelsotoon Sepahan Co. (Private Joint-Stock Company).