Pressure Vessels

Each pressure vessel that we manufacture is per the American Society of Mechanical Engineers (ASME) code. As a leading ASME pressure vessels manufacturer, our specialty lies in working with a variety of alloys, pressures, & designs to meet your custom requirements. More »

Weld Overlay and Clad Vessels

Our weld overlay and clad vessels are fully code-compliant. We use our advanced welding techniques to their full capabilities to offer you the finest overlay/clad components and pressure vessels. More »

High Pressure Vessels

We hold the American Society of Mechanical Engineers (ASME) U, U2, and U3 stamps, and have the capabilities and resources to manufacture ASME high pressure vessel to your exacting specifications. More »


We hold the American Society of Mechanical Engineers (ASME) U, U2, U3, PP, & S stamps, and have the capabilities and resources to manufacture autoclaves to your exacting specifications. More »

Heat Exchangers

We specialize in the design, engineering, and fabrication of Shell and Tube Heat Exchangers, including thermal calculations. All of our units are built in strict accordance with the latest edition and addenda of the A.S.M.E. Code, Section VIII Division 1, 2, or 3 and T.E.M.A.” More »


What are the Criteria to Ensure a Successful Shell and Tube Heat Exchanger Design

Shell and Tube Heat Exchangers (STHE) are the most common and extensively used devices for effective heat transfer in various process industries. Relatively simple manufacturing, and compatibility with varied operating conditions add to their popularity in the market.

Considering that there is a high risk factor in their application areas, STHEs must be designed vigilantly without any design flaw. To ensure a safe operation, manufacturers design and manufacture STHEs adhering to ASME/TEMA safety standards and principles.

Thermal and Mechanical Design of Shell and Tube Heat Exchangers

Flawless thermal and mechanical designs determine the success and operational excellence of STHEs. Any defect in these design stages leads to the failure of the entire system, which may result in unpredicted accidents and injuries.

Evaluation of the required effective surface area, selection of the required temperature specification, finding heat transfer area, etc. are carried out during the STHE thermal design stage. Whereas, the mechanical design of STHE includes:

  • Selection of tube parameters such as size, thickness, layout, pitch, and material
  • Design of main shell under internal and external pressure
  • Evaluation of thermal conductivity of tube materials

All these factors must be carefully examined and designed with precision to manufacture STHEs. This ensures a safe and reliable operation of an STHE in any aggressive conditions.

Criteria for a Successful Shell and Tube Heat Exchanger Design

Some of the criteria for a successful heat exchanger design includes:

  • The design and manufacturing of STHE is such that it must withstand the rigorous conditions within power plants, chemical plants, petrochemical plants, petroleum refineries, natural gas processing, and sewage treatment plants.
  • STHE parts are vulnerable to corrosion, erosion, vibration, or aging as they are used in adverse operating conditions for most of their service period. Hence, they must be designed and manufactured using parts that allow for easy cleaning, maintenance, repair, and replacement.
  • The designer should choose a multishell arrangement with flexible piping and valving. This helps in maintaining, repairing or replacing individual parts without disturbing others in the system.
  • Finalize a design after analyzing the specific application areas. The design of the heat exchanger should allow for easy customization in terms of length, diameter, weight, and/or tube specifications.
  • Consider the servicing capabilities of users when manufacturing custom STHEs.

Quality in Design Leads to Safe Operation

Adhering to the TEMA/ASME standards helps in designing and manufacturing STHEs that provide safe performance when used in harsh industrial setups. These codes provide fundamental safety and good manufacturing practices.

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