Heat Exchanger Assemblies
Shell and tube units with machined tube sheets, expanded tubes and pressure testing.
Shell and tube exchangers built with the tube sheets machined for the tube pattern, then expanded and rolled, and pressure tested on both sides before shipping.
8–12 weeks
1 piece
ISO 9001:2015
Technical Specifications
| Parameter | Value | Unit |
|---|---|---|
| Tube sheet hole position | ±0.05 | mm |
| Pressure test | Both sides, per unit | - |
| Tube expansion | Rolled and tested | standard |
| Surface area | 0.5–50 | m² |
| Design pressure | To 25 | bar |
| Certification | Test record supplied | - |
Available Materials
- Stainless 316L
- Stainless 304
- Copper / brass tubes
- Carbon steel shells
- Titanium tubes
Typical Applications
- Cooling circuits
- Oil coolers
- Steam condensers
- Process heating
- Hydraulic cooling
Surface Finishes
- Passivate
- Painted shell
- Machined tube sheets
- Internal flush
- Preserved for storage
Industries Served
- Energy & Oil & Gas
- Chemical Processing
- Food Processing
- Marine
- Power Generation
What drives the price of this part
Derived from the callouts on this page. Where a driver is not on the drawing, it is not on this list.
- Tolerance
- Tube sheet hole position at ±0.05 mm is the tightest callout this family carries. Tightening a callout is a process decision, not a machining decision: below the standard ±0.005 mm the work moves to grinding or jig boring, and the price moves with it.
- Material
- The first material listed, Stainless Steel 316L, rates 3/10 on our machinability scale at 217 HB. On this shop's scale a harder alloy means slower passes and more tool changes, and that is cycle time the quote has to carry.
- Order size
- Minimum order is 1 piece, so on a first order setup and programming are spread over very few parts and they are most of the price. Repeat orders at the same quantity are cheaper without anything on the drawing changing.
See how cycle time is calculated in the machining time calculator and what else moves a price in the cost driver reference.
How these parts are inspected
Matched to the callouts above and the instruments actually on the floor.
- Coordinate measuring machine (Zeiss CONTURA G2, two machines, GR&R 8.4% on the critical feature)
- Dimensional report against the drawing, with a 100% check on critical features rather than a sample
- Certificate of conformance and the mill certificate with every shipment
- Bore gauges and an optical comparator for hole position and edge form
The full equipment list, with counts, is on the capability page; the inspection sequence is on quality and inspection.
Questions buyers ask
- Why is tube sheet hole position so critical?
- Because every tube has to pass through two sheets. A hole out by 0.1 mm makes that tube bind, and forcing it in damages the tube end where it will later leak.
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