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Engineering Services


Our Engineering Division is committed to meet the requirements of our prestigious clients in a very professional manner. We believe in providing services in a unique manner to satisfy our clients. Our expertise is in the industrial sector for providing comprehensive technical specialized services, inspection and project management personnel for oil & gas, petrochemical, power, desalination, other infrastructures,production and allied industries.
Our expertise in engineering leads to conserve costly energy, increase man power efficiency, reduce material wastes, low construction costs, reduce maintenance cost and to reduce the cost of engineering expenses.
Our Engineering Services offer Comprehensive and cost effective repair, refurbishment and over haul services for the oil, gas, power & water industries and other industrial clients.
The services broadly include: -

  • Site Supervision
  • Site Management
  • QA/QC Management
  • Electrical/Instrumentation Divisions
  • Project Management
  • HSE Services
  • Piping Division
  • Design Engineering
  • Estimation/Planning Engineering

Inspection Services:


United Industrial Specialized Services (UNISIS), the leading Inspection, Expediting, and Specialized Technical services for oil & gas, petrochemical, power, desalination, other infrastructures, production and allied industries.
UNISIS is partnering with major international companies in the field of inspection to guarantee timely and quality service to our valued clients.
Our expertise in technical, inspection and administrative personnel has enabled us to constantly & consistently enhance our abilities and continues improvement.
We are constantly looking beyond customer’s and society’s expectations in order to deliver market leading services wherever they are needed. As the leader in providing specialized business solutions that improve quality, safety and productivity and reduce risk, we help customers navigate an increasingly regulated world. Our independent services add significant value to our customers’ operations and ensure business sustainability.
UNISIS provides customers with highly competent Inspection, Expediting and Specialized Technical services to meet their specific and time bound requirements on a long-term as well as short-term basis.
UNISIS have a group of Saudi Aramco approved vendor Inspectors who are capable to perform all kind of vendor inspections in each commodity at manufacturer facilities all over the world.

Commercial Division


We are one of the leading trading companies in the Kingdom of Saudi Arabia. The UNISIS family began trading in 2007, concentrating on FRP Cooling tower Fans and piping materials. In 2009 we extended our capabilities of supply all kind of piping, electrical, instrumentation and packaged customized equipments for petrochemical sector.
At an early stage we recognized the importance of serving our customers throughout the whole of Saudi Arabia and established the necessary sales and distribution network.
As a result of philosophy, the UNISIS Engineering became one of the first truly nation-wide trading companies in the Kingdom: It continues to be so. The Traditions of the UNISIS Engineering family live on.
With our head office in Al-Khobar, we are able to serve our customers through fully equipped branches across the Kingdom. We are committed to our customers and strive to provide them with the highest levels of service.
We are proud to have taken such an active part in the development of the Saudi Arabian market and we are well prepared to take full advantage of the many opportunities ahead.
The Integrated Project Office in Al- Jubail staffed with qualified multi-national professional engineers and qualified after sales support services provides a big advantage to UNISIS Engineering market strategies. UNISIS Engineering provide and recommend technically acceptable materials or approved equal manufacturers along with the Priced Quotation, Cut Sheet Catalogue, Technical Details or Material Certificate for Contractor’s onward submittal to end users or proponents for review and approval. This technical assistance for Project’s Specifications with less material cost helps our clients to save and expedite project duration on time. We are specialized to supply different kinds of But Welded pipe fittings in both Seamless and Welded Executions to ANSI B16.9/B16.28/ASTM A234 WPB/ASTM A403 WP-M/WP-S 304/304L, 316/316L, A420 WPL 1, WPL 6 & WPL3, A234 WP11, WP22, ASTM A860/MSS-SP-75 WPHY 42 THRU WPHY 80 (Butt Welding Fittings), ASTM B16.11/ASTM A105/A182 (Socket Welding Fittings and Threaded Fittings) and in different kind of Forged Flanges to ANSI B16.5/ASTM A105/A182, A350 LF1, A350 LF2, A350 LF3, JIS, DIN, BS, API Flanges Ranging up to # 10,000 PSI as well as Steel Pipes to ASTM A106/A53 GR.B/API5L, ASTM A333 GR 1, ASTM A333 GR 6 , ASTM A333 GR 3, A312 TP 304L/316L in Seamless and Electric Fusion Welded execution, etc. In the process of expansion the company has actively pursued a program of reinvestment in organizing New Facilities.
All Our Supplied Material Is Genuinely Of The Highest Quality And Confirming To relevant international standards and codes, Meaning:
• Thousand of line items are carried in stock.
• Components ordered from stock will be dispatched on the same day for next day delivery.
• All machined items are manufactured by the Certified Manufacturers.
• Stock items are produced as per related Standards.
• Calibrated Gauges ensure compatibility of all connections.
• An experienced Technical team is available to help with 'non-standard-items' (Customer defined items)
• Situated in Al- Khobar enables easy access to both local and International Markets.
• The range of products available makes it impossible to show every item in our catalogue. Should your exact requirements not be shown, please contact our sales office.
• Local deliveries are done via our own transport or as per client request.

Construction Division:


UNISIS is becoming a leading Mechanical and Electrical/ Instrumentation construction, consultancy and Specialised technical services company for heavy industries like Oil & Gas, Petrochemical, Power, Fertilizers, cement and other allied industries. In Saudi Arabia, Company head office situated at Al-Khobar and the branch offices at Jubail and Jeddah are able to meet and satisfy the various project/customer requirements. UNISIS offers specialized project construction works and consultancy for piping, Electrical projects such as, installation and commissioning of sub stations, tankage, boiler, structural works, equipment erection, shut down maintenance to its clients from the heavy industrial sectors.

The company also provides technical services and manpower outsourcing facilities to companies for their construction projects.

Our diverse expertise and talents enables us to offer our clients the complete range of construction services that bridge all the clients’ needs. UNISIS takes single point responsibility for managing all elements of project execution viz; plant construction, pre-fabrication, installation, testing, pre-commissioning and commissioning assistance.

For each project, UNISIS comprise of a unique team of highly qualified and experienced project managers, engineers and construction specialists that covers the following major areas:
a) Execution of construction projects
b) Management of Mechanical and E&I works
c) Inspection and Expediting
d) Project Monitoring and control
We have a hands-on management philosophy, a keen team player spirit and we pride ourselves on quality workmanship and the timely completion of projects. Page 3 of 12

Depending on the nature and timing of the contracts, we can undertake single contracts of up to 50 million Saudi Riyal