Core Services


Heusler’s team takes an innovative, solution-based approach to all projects, whether designing a single part, integrated packaged solution or managing an entire project. Our engineers are experienced and capable of undertaking from small to large project and provide stand-alone services the use of a variety of engineering software to meet Customers’ requirements. We are specialize in the following areas, but not limited to:



Pressure Vessel/Boiler/Heat Exchanger/Above Ground Storage Tanks
  • Pressure Vessels according to ASME Section VIII Division 1 and 2.
  • PVC Pressure Vessels according to ASME Section VIII Division 1
  • Exotic Pressurized Parts / Castings using Finite Element Analysis (FEA) According to ASME Section VIII Division 2, Part 5.
  • Boiler, Drums, Superheater, De-Superheater, Headers according to ASME Section I.
  • Heat Exchanger according to ASME Section VIII Division 1, TEMA and UHX.
  • Chimney / Exhaust Stack according to ASME STS-1.
  • Storage Tank according to API 620 and API 650.
  • FRP Storage Tank according to ASME RTP-1.
  • Steel and FRP water clarifier according to Roark’s formula.
  • Venting Calculation according to API 2000.
  • Thermal Design Calculation and Sizing for Heat Exchanger using HTRI.
  • Other Pressure Vessel components such as Platform, Lifting Lug, Spreader Bar, Jacking Beam, Davit Arm, etc.
  • Deep and Shallow Silo Bins.
  • Recertification of existing and in-service pressure vessel to DOSH according to ASME code.


Structural Engineering

  • Heavy structure analysis according to AISC or equivalent.
  • Structural analysis using analytical method, which also known as Finite Element Analysis (FEA).
  • Skid frame analysis and lifting arrangement.
  • Transportation arrangement and analysis.






  • Pressure Vessel, Column Tower, Multi-Chambered Pressure Vessel, Jacketed Vessel, Half-Pipe Jacketed Vessel, Dimple Jacketed Vessel, Horizontal Drum, Storage Tank, and Silo.
  • Heat Exchanger in both single pass and multi passes, Stacked Heat Exchanger, Kettle-Type Reboiler, Hairpin Heat Exchanger, Floating Head Heat Exchange, and Air Heaters.
  • Self-Reinforced Forging, Body Flange, Girth Flange, Nozzle and Forging with Stainless Steel Weld Overlay (WOL), Jacketed Nozzle and etc.
  • Carbon Steel / Stainless Steel / Cladded Vessel
  • Fully Heat-Traced Vessel with external coil development plan.
  • Thick wall vessel up to 155mm.
  • Large Column up to 450 Tonnes of erection weight and 80m of overall height.
  • Large Powder Silo with 220 Tonnes of operating weight in earthquake region.