
Shell & Tube Heat Exchangers
Thermal sizing in HTRI, mechanical checks in PV Elite, fabrication to TEMA and ASME VIII — up to bellows-type units with 400 mm tubesheets.
See specificationsAPI member company; our shell and tube exchangers and fin fan coolers can be built to API 660 / API 661 for oil and gas duty. This certificate covers our two manufacturing sites in Coimbatore.
We are a member of the American Petroleum Institute. Hydrocarbon producers and processors seldom accept an exchanger that satisfies only the general pressure vessel code; their specifications layer on the institute's own standards, namely API 660 for shell and tube units and API 661 for air-cooled units. These standards add requirements on design margins, materials, nozzle loads, inspection and records, and we apply them whenever your specification asks for them.
Endorsements from leading engineering consultancies and statutory bodies prove that independent, exacting reviewers have already examined our plants and our output. For international EPC firms and project owners, this speeds up supplier prequalification and builds trust well before a purchase order is placed.
| Issuing body | Membership of the American Petroleum Institute (API) |
|---|---|
| Standard / scope | API 660 for shell-and-tube units · API 661 for air coolers |
| Held by | United Cooling Systems Pvt. Ltd. |
| Applies to | Company-wide |
| Certificate number and validity | Printed on the certificate itself. We can send an up-to-date copy when asked. |
Certainly. ASME and National Board authorisations are listed in their public online directories, and each ISO certificate can be confirmed with the certification body printed on it. We will gladly supply the certificate numbers you need.
That is decided by the equipment's size, type and code requirements. Our quotation will state the building unit and the certificates that apply to your job.

Thermal sizing in HTRI, mechanical checks in PV Elite, fabrication to TEMA and ASME VIII — up to bellows-type units with 400 mm tubesheets.
See specifications
Fin fan coolers to API 661, finned on our own extruded and embedded lines and already delivered to ADNOC, PDO Oman and NNPC.
See specifications
Ready-to-install skid packages combining pressure vessels, filters, piping and structural steel.
See specificationsGive us the date your equipment must be on site. We will plan design, fabrication, inspection and shipping backwards from it and tell you honestly if it is achievable.