Heavy Mechanical Repair


Mechanical Shop maintenance activities include in-house repair, overhauling & testing of all types of static, rotating & reciprocating equipment. Maintenance & repair services for pumps, engines, compressors, GAS TURBINES, STEAM TURBINES, HYDRO TURBINES. Various upstream & downstream oilfield equipment such as well head & christmas tree equipment, BOPs, slush pump modules, hoists, hooks, swivels etc… 

Instrumentation and Valve shop specializes in repairs, overhauling and testing of all types of valves & instruments, providing onsite maintenance services during planned shutdowns with well-equipped portable workshops & OEM trained competent technicians. Skilled valve technicians provide quality services for repair, overhauling & testing of all types of valves up to 52 inches 

Manweir’s PRV Valve repair and testing mobile workshop is a 20ft containerized unit with fully air-conditioned and clean shop with certified test benches to test valves. The unit consists of various certified Test pressure gauges up to 30000 psi and a hydro pump up to 20,000 Psi capacity.


As below, not limited to the following:


  • Pumps & compressors maintenance & Overhaul
  • Performance and Material Upgrades
  • Condition monitoring & Vibration analysis
  • Onsite Laser Alignment services
  • Reverse engineering capabilities
  • HVOF spray coatings on shafts
  • Dynamic balancing of rotors
  • Cryogenic pumps repair & Overhaul
  • Overhauling and Repair of Gear box
  • Overhauling and repair of Hydraulic cylinders
  • Overhauling and repair of Pneumatic Cylinder


  • Over haul and repair of PLATE TYPE heat exchangers
  • Re tubing of SHELL & TUBE TYPE heat exchangers
  • Repair and overhaul of columns
  • Repair and overhaul of hydraulic cylinders
  • Repair and overhaul of oil field ancillary equipment
  • Supply of plate heat exchanger spare
  • All types of valves such as Gate , Globe , Ball, Check , Butterfly , Christmas Trees, Pressure relief valve (PRV), BOP and choke & kill manifolds.

Services offered

  • Overhaul & Repair (up to 52”)
  • Hydro-test
  • Calibration of safety valves
  • Blasting & painting

Turbine Workshop

Manweir has a technology transfer agreement with Corrtech Energy Limited for overhaul & service of gas & steam turbines.

Component Manufacture

  • Compressor Stator & Rotor Blade Kits including IGVs (Frames 3, 5, 6, 7 & 9).
  • An entire range of Casings (Frame 5, 6 & 9).
  • Shroud blocks (Frame 3, 5, 6, 7 & 9) from Standard & Super Alloys.
  • Fuel Nozzle Assemblies.
  • Consumables & Hardware items made from SS and complex material like Stellite & Nimonic 263.
  • Wide range of Rotor Overhaul Hardware Items
  • Customized products through reverse engineering for many Original Equipment Manufacturers (OEMs)

Component Repair

  • Repair workshop provides repair services for the following components for all frame sizes:
  • Nozzles
  • Shrouds
  • Combustion Liners
  • Transition Pieces
  • Crossfire Tubes & Retainers
  • Fuel Nozzles
  • Bullhorn Brackets
  • Flow Sleeves

Rotor Overhauls

  • Complete Rotor Overhaul with reblading and replacement of hardware.
  • Run out checks and tip turning.
  • Retaining Ring removal.

Field Maintenance & Engineering Services

  • Maintenance
  • Electrical & Mechanical, Engineering support
  • Fuel Conversions
  • Inspection and Plant Overhaul
  • Field up-rate and Performance improvement
  • Controls & Instrumentation – Mark IV, V & VI

Coating Services

  • On par coating services & advanced protective coatings for a range of OEM equipment
  • Cold Coating facilities
  • The current range of coatings available are:
    • IPCOTE IP 9183 R1
    • SMOOTSEAL IP 94444
    • IPSEAL IP 9184 (KHAKI)
  • Offers coatings on fasteners and other metal surfaces for off-shore as well as on-shore installations

Major Clients: Siemens, Maan Turbo (India)

Repair and Testing of Wet Mechanical Seals

Manweir established a state of the art wet mechanical seal workshop equipped  with dynamic test bench.

 Highlights of workshop

  • Dynamic Test Bench – Shaft diameter up to 150mm, with a stuffing box diameter up to 250mm & Dynamic Test pressure: 25 bar. 1500 & 3000 rpm in both directions.
  • Lapping machine designed for mechanical seal, rotating & static faces lapping
  • Monochromatic light for inspection of face flatness
  • Manufacture of spare parts through reverse engineering

Contact Us

Tel: (+974) 5550 0268 Fax: (+974) 4407 6498 Email: [email protected]

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