# Shell-and-tube heat exchanger

> Shell-and-tube heat exchangers fabricated to your thermal datasheet to TEMA and ASME Section VIII, and what the request needs, by TEMA type and tubes.

URL: https://jjprojectsok.com/products/valves-process-equipment/shell-tube-exchanger  
Español: https://jjprojectsok.com/es/products/valves-process-equipment/shell-tube-exchanger  
Updated: 2026-10-16

Exchanger in which one fluid flows through a tube bundle and another flows around it inside a shell.

**In short:** Exchanger in which one fluid flows through a tube bundle and another flows around it inside a shell. JJ Projects sources it to the specification the buyer names. Typical reference, standards: TEMA; ASME Section VIII.

## Specification references

- Standards: TEMA; ASME Section VIII
- Fabrication: To the buyer's thermal datasheet
- Tube material: As specified, for example ASTM A179 or A213
- Documents: Data book with drawings, certificates and test reports

> Typical references only. The governing specification is the one on your purchase order or datasheet.

## Typical uses

- Heating and cooling of process streams with water, steam or other process fluids
- Condensers and reboilers in distillation and gas processing
- Oil coolers and lube oil systems
- Replacement of existing exchangers and spare bundles

## What to include in a request

A request with these details can be quoted without a round of questions. Send what you have and we will ask for the rest.

1. Thermal datasheet: fluids on shell and tube side, flows, inlet and outlet temperatures, allowable pressure drop
2. TEMA type designation, for example BEM or AES, and the TEMA class
3. Design pressure and temperature for each side, and the minimum design metal temperature
4. Tube data: outside diameter, gauge or wall, length, pitch and number of passes
5. Materials for shell, tubes, tubesheets and channel, with corrosion allowance
6. Code and stamp: ASME Section VIII Division 1, and any third-party inspection
7. Testing, painting and the data book content

[Request this item](https://jjprojectsok.com/request-a-quote?item=shell-tube-exchanger)

## Questions

### What do the TEMA classes R, C and B mean?

TEMA defines mechanical standards by class: R for the severe requirements of petroleum and related processing, C for moderate commercial and general process service, and B for chemical process service. The class is set in the datasheet.

### What does a TEMA designation such as BEM mean?

Each letter names a part: the first the front head type, the second the shell type, the third the rear head type. BEM is a bonnet front head, a one-pass shell and a fixed tubesheet rear head. The designation tells the fabricator how the exchanger is built.

### Do you do the thermal design?

The exchanger is sourced to your thermal datasheet and drawings. Send the datasheet with the request. If you only have the process conditions, say so and the request can be handled with the right party.

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## Guides

- [Industrial procurement process, step by step](https://jjprojectsok.com/knowledge/industrial-procurement-process): How industrial procurement works, step by step: requirement, RFQ, bid tabulation, evaluation, award, PO, expediting, inspection, logistics and delivery.
- [How to write an RFQ for industrial materials](https://jjprojectsok.com/knowledge/how-to-write-an-rfq): What an RFQ for industrial materials must specify: item, size, schedule or class, grade, standard, quantity, MTRs, inspection, packing and Incoterm.
- [Material test reports (MTRs) and EN 10204](https://jjprojectsok.com/knowledge/material-test-reports): What a material test report contains, how EN 10204 types 2.1, 2.2, 3.1 and 3.2 differ, what heat numbers mean, and what to check against the purchase order.

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