Corporate History

Established 2005

Al Ajjaj Limited Company is one of the leading and qualified ‘A’ Grade and ISO: 9001,14001 &18001 certified Electro – Mechanical Contractor in Qatar. The company was established in 2005 and till today it aims at continuing to be a successful, diversified engineering organization in the State of Qatar & Middle East.
The is operated and managed by an elite group of dedicated and qualified Engineers. The vast experience in fields like MEP, Infrastructure and Engineering services, to name a few, grants us the confidence of our clients and continuity of dealing with them.

We are the one of the leading and qualified “A” grade Civil, 66/11KV, Electro-Mechanical Contractors in Qatar with diverse interests in the local market.

We aims to continue to be a successful, diversified engineering organization in Qatar - Middle East. Over the years, we have built up a reputation as a reliable and leading quality contractor. Hence we have a good rapport with most of the leading consultants & clients in the government, semi-government & private sectors.

We are one of the government and private sector approved contractors with a number of projects carried out for Kahramaa, Qatar Petroleum, Qatar Foundation, QASCO, QAPCO, Diwan Amiri, Qatar Armed Forces, Ministry of Interior, Ministry of Foreign Affairs, Building Engineering Department, Ministry of Water & Electricity, Ras Gas, Qatar Gas, HMC, Q-Tel, etc. AALCO is operated and managed by an elite group of dedicated & qualified Engineers & Technicians dealing in Engineering, Procurement, Installation and Maintenance work.

The vast experience in the MEP field grants us the confidence of our Clients and continuity of dealings with them. Apart from the specialized team of experienced & qualified staff, we have a well-equipped Workshop to cater to the needs of our projects.


Vision 2030

Our vision is to make an ever-lasting relationships with our Customers by providing the best solutions to their needs.


Mission 2030

Our strength is our people. We work with commitment and respect to ourselves and our clients. We continue our passionate work that brings success every day.


Quality Policy

ISO 9001:2008

Al Ajjaj Limited Company Quality Assurance is Based on Four Cornerstones:-

Detection - Promptly identify and isolate non- conformance

Prevention - Preclude non-conformance during contract performance

Correction - Implement provisions for timely and effective corrective actions

Production - Our procedures mirror the ISO 9001 areas

Our Corporate Commitment is to: 

Integrate quality into all program activities

Provide quality products while striving to exceed customer expectations

Al Ajjaj Limited Company has established and documented a Quality Assurance System in compliance with ISO 9001:2008 Quality Management System Standard. The Quality Assurance System is administrated through written policy, procedures, and instructions. Written instruction is provided to cover work, inspection, and test instructions for individual products. Where deemed necessary, special operational and quality control procedures are developed for functional activities that have an effect on product/service quality. Quality Records are generated through the implementation of the Quality Assurance System, to provide objective evidence of compliance and to measure the effectiveness of the system.

HSE Policy

OHSAS 18001

ISO 14001

Al Ajjaj Limited Company is committed to manage its business processes through continual improvement on HSE management system and to the fullest satisfaction of its clients, employees, contractors, interested parties and organization. It is our policy to provide and maintain a safe and healthy working environment free of recognized hazards and to follow the operating practices in Construction and Maintenance Services, including Engineering, Procurement and other relevant activities by ensuring the following:

1. Abide by the current applicable Health, Safety & Environment legislation and legal requirements of Qatar including regulations on environmental laws, and requirements of other interested parties.
2. Adopt work practices that minimize risk to human life, property and the environment.
3. Train process owners to facilitate environmental friendly safe work culture.
4. Business processes will be designed and focused to meet customer satisfaction and expectations by minimizing HSE risks to promote safe and green business culture.
5. Develop strategies in line with the industry and international safety standards to control risks that meet customer expectations.
6. Involve employees at all levels in managing health, safety and environmental risks.
7. Enhance relevant knowledge, technology, laws and regulations consistent with Health, Safety and Environment Philosophy.
8. Minimize waste and promote the conservation of environmental resources.
9. Initiate quick and effective response to incidents and emergencies resulting from our activities through cooperation with Civil Defense, and other Government agencies. Observance of this policy by all members of the organization is necessary to accomplish an accident-free, environment friendly performance and sustain its business entities.




We are well experience in constructing townships, commercial and residential complexes, industrial warehouses, electrical substations and more. The projects are delivered with the active contribution of qualified project teams with their ability to draw on an extensive plant, machinery and manpower resource. 
The Company's skilled tradesmen are dedicated to maintain high quality and high standards of workmanship.

AALCO Construction has been on a steep upwards trajectory to market leadership and its growth continues strongly, fuelled by its investments in people and technology. 

The Division specializes in fast-track projects consisting of high-speed construction works using the latest formwork technology.

Scope of work
AALCO Constraction offers wide array of services for your contracting requirements through its well-equipped professional and skilled manpower. We guarantee that we can provide you with the most practical, innovative and latest state-of-the-art services which include:


  • Construction of Townships, Commercial and Residential Complexes & Villas.

  • Construction of Petrol Stations.

  • Construction of Industrial Warehouses.

  • Construction of Electrical Substations.

  • Civil Renovation, Maintenance, Refurbishing, and more.



We are focused on delivering business performance through a highly flexible and responsive approach, which is characterized as being business ready.

We have a highly experienced team of professionals, who execute projects with flexibility and speed. As a company, we are prepared up to the challenges and demands of the growing Qatari market.

Scope of work
Transportation Network

Road and highway networks, signage and markings, electrical systems (street lighting and traffic lights), edge treatments (curbs, sidewalks, landscaping), and specialized facilities such as road maintenance depots and rest areas

Water Management Networks
Drinking water supply, including the system of pipes, storage reservoirs, pumps, valves, filtration, treatment equipment and meters, including buildings and structures to house the equipment, used for the collection, treatment and distribution of drinking water.

Energy Network
Electrical power network including construction of substations, excavation, backfilling, reinstatement and distribution works.
Drainage Networks
Construction of drainage networks with drainage outlets, manholes, overfalls, chutes, bridges, pipe crossings, and other such structures.

Communications Networks
Telephone networks (land lines) including telephone exchange systems 



We have been developed from the time it was established to a position today as one of the leading electro-mechanical contractor in Qatar providing MEP services for diverse range of projects. 

As we are an ISO 9001:2008 certified contractor in Doha market, we offer clients the experience and support of a dedicated professional workforce in providing a complete solution in Mechanical, Electrical, Plumbing, Drainage and Fire Protection Services including supply, installation, testing and commissioning. 

We are committed to fulfil all the requirements of our customers by delivering the projects they have undertaken at the agreed quality, cost and time.



AALCO has the capability and approval from concerned authorities to execute EHV Cables, Substation and Overhead Line projects of 66kV/132kV/220kV/400kV voltage level on Turn-key/EPIC basis.

The following are the brief activities: -


Carry out Engineering calculations, Ratings , Sizing, Drawings etc.,

Prepare Layout drawings , Route drawings , Route Plans , Location Plans


Preparation of Risk Analysis , Detailed work schedules , Critical Activities monitoring , Recovery Schedules , Critical Path Methods etc.,

Procurement of all items like- EHV/HV/LV & FO Cables , GIS , Control & Relay Panels, Transformers, AC/DC Distribution Boards and other subcontract services


Preparation of QC Plans , ITP , Method Statements , Q Forms

Deployment of QC personnel


Preparation of HSE Plans, JSA , Reporting Forms

Deployment of Safety personnel etc.,



Route verification, including collection of information about existing utilities, cables, pipes, ducts and other underground services

Soil investigation, excavation of trial pits, including testing of original and backfilling soil thermal characteristics.

Site survey including setting out and preparation of AS-BUILT record drawings


Site clearance and leveling, including removal of all plants, surplus material, and disposal to an approved location.

Excavation of trenches, shuttering, protection of existing services, filling in and reinstatement.

Installation of FTB bedding and CBS covering over the laid cables


Construction of Joint Bays, Link Box Pits  including excavation, shuttering, concrete works according to KAHRAMAA specification

Concrete protection works with Waterproof membranes, Bitumen Paint / Boards, partition walls etc.

Construction of Fiber Optic closure Manhole


Carry out Road crossings of different types by Open Cut method

Carry out Road crossings of different types by Horizontal Directional Drilling (HDD) method.

Installation of standard HDPE pipe of 40 mm laid along the centre phase for possible future DTS Cable/System installation and for Pilot cable


Construction of Reinforced Concrete Cable Trough with inside dimension 1x1m, including all finishes, protection and concrete cover slab


Installation of EHV cables in excavated trench / through HDPE pipes at road crossing / concrete trough inside substations/ substation basements etc.

Carrying out the Outer Sheath Test on the laid cables

Installation of Straight through joint and Sealing Ends using specialist supervision and manpower from Cable manufacturers

Electrical & HV Testing will be carried out using the specialist agencies approved by KAHRAMAA


Installation of FO Cable (PILOT) through 40 mm HDPE pipe by blowing method.

Splicing ,OTDR & Power Testing


Reinstatement of the route by bitmac surface, installation of pavement bricks, installation of grass and plants, installation of trees etc.



The Division specializes in fast-track projects consisting of high-speed construction works using the latest formwork technology.

Scope of work

  • Horizontal Bi Directional Drilling.

  • Vertical Driling.

  • More than 1000 fleets including Heavy Equipments and more.


© 2018 by AALCO GROUP                      |                A subsidiary of Rubiah Holding Company                        |                               Designed by  IT Dept.             

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CALL US: +974-4000 6611