1978
İsmail ERTAN, who became the General Manager of T.P.A.O in 1978, started his first tour in the region from Batman. In Batman, where ERTAN came in the last months of 1978, the T.P.A.O-BOTAŞ Petrol Pipeline valve was opened by the technical committee and our company founder, Hasan YILDIRIM, who is experienced in the field of "Pipe-Line", the pipeline control leader.
1981
The year was 1981, then President Kenan Evren came to Batman to see the oil fields in the region. Kozluk-Shelmo oil field was a popular area with high gravity oil. The Şelmo-103 oil well of the oil workers, including our late Hasan Yıldırım, our company founder, one of the former oil workers of the period, was illuminated with a generator.
1983
Year 1983, the founder of our company, the late "Pipe-Line" expert, Hasan YILDIRIM, and his colleagues carried out the installation work of the pump, which they assembled for the transfer of the oil extracted from the T.P.A.O Şelmo field to the stock tanks via the pipeline.
1986
Hasyılsan Construction Limited Company started its activities in 1986 under the name of Hasan YILDIRIM Contracting.
1991
He became the contractor for the construction, maintenance and repair works of tanks, piping, mechanical and civil works in many fields and camps (Batıraman, Raman, Garzan, Dodan, Silvanka, Maghreb) in T.P.A.O and its affiliated facilities.
1998
Entering a growth period in 1998, Hasyılsan Construction Contracting Industry and Trade Limited Company was established.
2004
Successfully completed many construction, maintenance and repair works in power plants, hydroelectric power plants, natural gas combined cycle plants and LNG storage facilities.
2005
Became the contractor of maintenance and repair works of 4,100 wagons belonging to Turkey Railway Machinery Industry Inc. (TÜDEMSAŞ), which are used in material transport to and from the country.
2007
It undertook the maintenance and repair works of more than 100 ships and ferries belonging to Istanbul Sea Buses (IDO), Turkish Maritime Organizations (TDI) and Istanbul City Lines.
2010
Became the main contractor of many E.P.C (engineering, procurement, construction) projects at BOTAŞ LNG facilities.
2021
Inspired by its roots in refinery, industry, energy, petrochemical, LNG and many other industrial facilities, it follows the innovations in the sector with an innovative approach in line with the principle of sustainability, adopting continuous development as a principle and continues to grow by determining this development in its targets.