As a one-stop solution provider, we are able to undertake fabrication projects and site installations for our clients across South-East Asia.


We also have the capabilities and expertise to efficiently undertake Greenfield & Brownfield projects ranging from construction of new industrial plants, modification & upgrade of existing plants.

Additionally, our tankage team has strong capabilities in fabrication, construction, tank repair and maintenance.

Module Fabrication at waterfront yard.JP


We are equipped with in-house machinery and equipment including an automated pipe spool fabrication system and orbital welding machines to meet our clients’ requirements, we are able to spearhead production planning, material handling with approved drawings, maintain client requirements and ensure quality works that adheres to your timeline.

We can design, purchase materials and fabricate according to international standards such as ASME, TEMA, ASTM, API, NACE for stainless steel, carbon steel, mild steel, alloy, and other exotic materials. 


  • Fabrication of Pressure Vessel/ Heat Exchangers & Air Fin Coolers

  • Fabrication & Erection of Steel Structures

  • Fabrication & Installation of Piping Works Including Blasting & Painting

  • Fabrication of Pre-Assembled Modules (PAM), Skids

  • Tankage Fabrication

  • Blasting & Painting

Module Fabrication at waterfront yard.JP
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We conduct multiple quality control processes to ensure the highest level of quality in our all fabrication work.

The following are some examples of QC processes we conduct in-house:

  • Welding Inspection

  • ITP, WPS/ PQR Preparation

  • PWHT

  • Hardness Testing

  • Positive Material Identification (PMI) Testing

  • Ultrasonic Testing (Thickness Measurement)

  • Ultrasonic Bolt Stress Measurement

  • Dye Penetrant Testing

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Ferrite Test

Holiday Testing

  • Ferrite Count

  • Blasting & Painting Inspection (NACE)

  • Mechanical Run Testing, Hydrotesting and Recording

  • Holiday Testing (High-Voltage Spark Testing)

  • Holiday Testing (Low-Voltage Wet Sponge Testing)

  • Magnetic Particle Testing (MPT)

  • Laser Shaft Alignment for Rotating Equipment

  • Dry Film Thickness Painting Test

  • Phased Array Ultrasonic Testing (PAUT)

Hardness Test

PMI Test


  • 2 Fabrication Workshops: 3,683sqm

  • Open Yard: 9,339sqm

  • Overhead Cranes: 6 Units, 20T, 12.5m Height Clearance

  • Waterfront Length: 91.708m

  • Automated Pipe Spool Fabrication & Welding Workshop
    - Carbon Steel : 300 ⌀"/shift
    - Stainless Steel: 200 ⌀"/shift 





We provide a complete range of construction and project works professionally carried out by our experienced teams. Backed by detailed planning, safety standards, operational reviews, and proper documentation, our teams are ready to manage various types of site conditions and meet your expectations.


  • Design, Fabrication and Erection of Steel Structures/ Fixed Equipment

  • Design, Prefabrication & Installation of Piping Works

  • Installation of Static & Rotating Equipment

  • Design, Prefabrication of Pre-Assembled Modules (PAM), Skids

  • Construction Management of Plants & Refineries

  • Design, Site Installation of Electrical & Instrumentation Works

  • Tank Construction

  • Scaffolding

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Our tankage team has strong capabilities in fabrication, construction, tank repair and maintenance.


We provide the full EPC of new tank construction on field with strong capabilities to undertake the construction of all types of tanks including spherical tanks & atmospheric tanks (cone roof/dome roof/floating roof tanks) following API 650 & API 620 standards.

In addition to the conventional field erection method, and as part of our unyielding commitment to achieve, quality, safety and work productivity, we have implemented mechanisation and automation in our tank fabrication and construction processes.


Welding Automation Equipment: 

  • Automatic Vertical Up Seam Welding Machine

  • Automatic Horizontal Girth Seam Welding Machine

  • Automatic Butt/Corner Seam Welding Machine 

  • Hydraulic Lifting System

Tank construction with Tubular Scaffoldi
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Mun Siong has a strong track record in maintenance, rehabilitation, repair and reconstruction of Tanks, following API 653 standard. 

  • Demolition & Reconstruction or Conversion of Tank Roof: Internal/ External Roof, Cone Roof, Dome Roof 

  • External/Internal Jack-up for: Tank Bottom or Annular Plates Repair & Replacement

  • Installation of Tank Bottom Plate 

  • Repair & Replacement of Floating Roof Drain System, Rolling Ladder

  • Repair or Replacement of Tank Internal Heating Coil, Sparger Pipe System, Water Draw-off Piping

  • Repair & Replacement of Tank Shell/Roof Nozzles, Manways, Venting Systems 

  • Repair & Replacement of Fire Water/ Foam Pipe System

  • Other Rectification Works: Tank Shell Buckling

  • Hydro-Test & Handover

  • Scaffolding