• Chagalesh Consulting Engineers
    founded in Iran in 1981
    by a group of professional managers and engineers with extensive experience in oil, gas, and petrochemical industries
  • video_woman_cover3
    In 1997
    Chagalesh was certified by
    ”Iran’s Management and Planning Organization”
  • Our Mission
    Excellence in Project Management

Welcome! This is Chagalesh.

well-known Iranian design-build contractor with more than three decades of continuous presence in oil, gas & petrochemical industries.

About us

Latest News

New gas pressure boost installation in Tabriz.

The export of 60 million cubic meters of gas to Turkey is now possible with the operation of new gas pressure boost installation in Tabriz. ...

Gasoline Making Unit

2.8 million liters gasoline making project at Shahid Tondgouyan (Tehran) oil refinery comes online tomorrow. ...

Aghajari Recoverable Oil Reserves to Increase to 2-5 bn Barrels

During the inauguration ceremony of the biggest gas injection project in the world, gas injection into the Aghajari oil reserves, the Iranian Oil Min...

Our Core Values


Acting with honesty and in an ethical manner


Committing to high quality services & products


Ensuring occupational health,safety, and protecting the environment


Satisfying clients’ needs and expectations


Treating employees with dignity and respect


Contributing to society and behaving in socially responsible ways


Encouraging creativity, innovative ideas and value engineering


Pursuing continual learning and performance improvement

Our Mission

As a nationally renowned design-build contractor in oil, gas and petrochemical industries, our mission is to successfully complete any project we undertake, through excellence in project management and continual Improvement in our organization’s performance.
Total km of pipeline
Total tonnage of steel work
Total cubic meter of concrete
Total inch/Dia have been designed and constructed

Company Overview

Chagalesh Consulting Engineers is a privately owned company founded in Iran, in 1981, by a group of professional managers and engineers with extensive experience in oil, gas, and petrochemical industries.

In 1997, Chagalesh was certified by ” Iran’s Management and Planning Organization” as a qualified design-build contractor of oil, gas and petrochemical projects and since then has successfully completed several projects through various types of contracts including EP, EPC, EPCC.
Engineering, Procurement, Construction, Commissioning.

Fields of Activities

  • Oil and gas upstream surface facilities and field development
  • Oil and Gas Treatment Plants
  • Desalting Plants
  • Petrochemical Plants
  • Chemical Plants
  • Mobile Oil Treatment package (MOT)
  • Gas Injection Plants
  • Pump/Compressor Stations
  • Oil and Gas Gathering & Transmission Pipelines
  • Storage Tank Farms
  • CNG Refueling Stations

Scope of Services

  • Feasibility studies
  • Basic Engineering
  • Front End Engineering & Design (FEED)
  • Detail Engineering
  • Procurement
  • Construction Management/Supervision
  • Field Engineering
  • Pre-Commissioning/Commissioning
  • Training
  • Project Management Contractor (PMC) Services


The main clients of Chagalesh have been:

  • National Iranian Oil Company (NIOC)
  • National Iranian Gas Company (NIGC)
  • National Petrochemical Company (NPC)
  • National Iranian Oil Engineering & Construction(NIOEC)


Chagalesh has completed numerous joint projects with internationally renowned companies, such as:
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info@chagalesh.com · +98-21-88804770 ~ 77 ·