Oil & Gas
Process equipment — heat exchangers, vessels, tanks and strainers
CRS PLUS sources fabricated and packaged process equipment for oil and gas, utility and industrial plants — heat exchangers, pressure vessels, storage tanks, separators, strainers and filters, cooling towers, boilers and burners — from code-certified fabricators against the project mechanical datasheet, with design documentation, material certificates and third-party inspection as specified.
Product families
Sourced through the qualified supplier base. Listing does not indicate stock held by CRS PLUS — availability, origin and lead time are confirmed per enquiry, and every quotation states the certification that governs the supply.
Heat exchangers
- —Shell-and-tube exchangers to TEMA R, C and B, fixed tubesheet, U-tube and floating head
- —Gasketed and brazed plate heat exchangers
- —Air-cooled heat exchangers to API 661
- —Double-pipe and hairpin exchangers
Thermally rated and mechanically designed against the process datasheet.
Pressure vessels and columns
- —Pressure vessels to ASME VIII Division 1, U-stamped where required
- —Vessels to PED 2014/68/EU and EN 13445 for European projects
- —Knock-out drums, scrubbers, filters and receivers
- —Columns, internals and packing
Carbon steel, stainless, clad and duplex construction; PWHT and NDE as specified.
Storage tanks
- —Welded steel tanks to API 650 for atmospheric storage
- —Low-pressure tanks to API 620
- —Bolted steel and GRP tanks for water and chemicals
- —Day tanks, skid tanks and bunded tanks for fuel
Shop-fabricated up to transport limits; field-erected on request through the fabricator.
Separators and skids
- —Two- and three-phase separators and test separators
- —Oil–water separators — API and coalescing plate
- —Skid-mounted packages with instrumentation and piping
Designed and fabricated to the process datasheet and code.
Strainers and filters
- —Y-strainers, basket and duplex basket strainers, cast and fabricated
- —Temporary conical and cone strainers for commissioning
- —Bag and cartridge filter housings
- —Coalescing and gas filters
Specified by line size, class, mesh or micron rating and materials.
Cooling towers, boilers and burners
- —Open and closed-circuit cooling towers, FRP and steel, counter- and cross-flow
- —Industrial steam boilers, fire-tube and water-tube, and thermal-oil heaters
- —Process burners, gas and dual-fuel, with burner management systems
- —Economisers, deaerators and water treatment
Packaged with controls and supplied with code certification.
How process equipment is specified
Fabricated equipment is defined by its design code and the mechanical datasheet. The parameters below are what an enquiry must state.
| Parameter | What it defines | Common values |
|---|---|---|
| Design code | The standard governing design, fabrication and inspection | ASME VIII Div 1 or 2; PED / EN 13445; TEMA; API 650 / 620; API 661 |
| Design pressure and temperature | The envelope the equipment is designed for | bar g and °C, with vacuum rating where applicable |
| MAWP | Maximum allowable working pressure | Stamped on the nameplate |
| Materials | Shell, heads, tubes, nozzles | SA-516 Gr 70; SA-240 316L; SA-179 / SA-213 tubes; clad and duplex |
| Corrosion allowance | Additional thickness for service life | Typically 1.5 to 6 mm |
| NDE extent | Radiography and other examination | RT 100 %, spot or none; UT, MT, PT; joint efficiency |
| Heat treatment | Post-weld heat treatment | PWHT per code or service requirement |
| Third-party inspection | ASME code inspector and code stamp | ASME U-stamp; Notified Body for PED; TPI agency |
| Nozzle schedule | Connections | Size, rating, facing and orientation per the datasheet |
Shell-and-tube vs plate vs air-cooled — which exchanger
The three exchanger types most often compared on an enquiry.
| Property | Shell-and-tube | Plate | Air-cooled |
|---|---|---|---|
| Standard | TEMA | Manufacturer standard; PED / ASME for pressure parts | API 661 |
| Pressure and temperature | High — to full code limits | Limited by gaskets | Moderate |
| Compactness | Large footprint | Very compact | Large footprint |
| Fouling service | Handles fouling; cleanable | Sensitive to fouling | Fin-side fouling by dust |
| Cooling medium | Water, process fluid | Water, process fluid | Ambient air — no water required |
| Typical use | Refinery, gas processing, steam | Clean liquids, HVAC, utility | Sites without cooling water; Gulf and desert locations |
What the fabrication documentation includes
No manufacturer-specific figures are published here: CRS PLUS sources from several mills and manufacturers and each issues its own certificate, which governs. These are the documents a fabricated equipment delivery will normally include.
| Document or test | Standard or method |
|---|---|
| Design calculations | To the design code, reviewed by the ASME code inspector where stamped |
| Fabrication drawings | General arrangement, details, nozzle orientation, as-built |
| Material test certificates | EN 10204 3.1 for all pressure parts, with heat-number traceability |
| Welding procedures and qualifications | WPS, PQR and welder qualifications to ASME IX |
| Non-destructive examination reports | RT films or digital, UT, MT, PT reports as specified |
| Heat treatment records | PWHT charts where performed |
| Hydrostatic test certificate | To the design code; pneumatic where specified |
| Nameplate and code data report | ASME U-1 or U-1A; PED declaration and CE marking |
| Third-party inspection release | Inspection release note from the TPI agency |
| Manufacturer’s data book | Compiled dossier of all the above |
Supply terms
- Origin
- Sourced per enquiry from a qualified supplier base of mills and manufacturers in China, India, Europe and the Gulf. Origin and certifying body are stated on each quotation.
- Incoterms
- Ex-works and FOB as standard. CIF, CFR and DAP available to GCC, Levant, Red Sea, East and West African destinations.
- Documentation
- Mill test certificate to EN 10204 3.1 as standard, 3.2 with third-party witness on request; commercial invoice, packing list, bill of lading, certificate of origin.
- Inspection
- Third-party inspection at source available on request through recognised inspection agencies. Inspection scope agreed on the purchase order.
- Lead time
- Standard sizes and grades from stock to six weeks. Made-to-order items and large parcels eight to sixteen weeks. Confirmed per quotation.
- Enquiry detail
- The mechanical datasheet, or: design code, design pressure and temperature, materials, dimensions or duty, nozzle schedule, corrosion allowance, NDE and PWHT requirements, inspection and stamping requirements, and delivery location.
Questions
Frequently asked questions
What are TEMA types and what do the letters mean?
TEMA, the Tubular Exchanger Manufacturers Association, standardises shell-and-tube exchanger design. A three-letter designation describes the front head, shell and rear head — for example BEM is a bonnet front head, one-pass shell and fixed tubesheet rear; AES is a removable-channel front head, one-pass shell and floating rear head. TEMA class R is for refinery and severe service, class C for moderate commercial service, and class B for chemical process service. The datasheet states the type and class.
When is an ASME U-stamp required?
The U-stamp certifies that a pressure vessel was designed, fabricated and inspected in accordance with ASME VIII by an ASME certificate holder, with an ASME code inspector witnessing the required stages. It is required where the owner, the jurisdiction or the insurer specifies ASME code compliance — which is the norm in the Gulf and much of Africa for hydrocarbon service. Vessels for European projects follow PED with CE marking instead.
What is the difference between API 650 and API 620 tanks?
API 650 covers welded steel tanks for atmospheric storage — design pressure up to a small positive value at the roof — and is the standard for crude, product and water storage. API 620 covers larger low-pressure tanks, up to about 1 bar g, including refrigerated LNG and LPG storage. The stored product and its vapour pressure determine which applies.
What is a duplex strainer?
A duplex strainer has two basket chambers with a changeover valve, so one basket can be removed and cleaned while the other remains in service, without interrupting flow. It is specified where the line cannot be shut down for cleaning — fuel oil, lubrication, cooling water and seal-flush systems. A simplex strainer has one chamber and requires the line to be isolated for cleaning.
What does third-party inspection involve?
An independent inspection agency, appointed by the purchaser, witnesses defined stages of fabrication — material verification, fit-up, welding, NDE, hydrotest and final inspection — against an inspection and test plan agreed before work starts. The agency issues an inspection release note before shipment. It is specified for pressure equipment, critical service and where the purchaser cannot attend the fabricator’s works.
What is needed to quote process equipment?
The mechanical datasheet and, where available, the process datasheet and any drawings. At minimum: the design code, design pressure and temperature, materials, principal dimensions or the thermal duty, nozzle schedule, corrosion allowance, NDE and heat treatment requirements, inspection and stamping requirements, and the delivery location for transport limits.
Where is the equipment sourced from?
CRS PLUS sources process equipment from its qualified supplier base of code-certified fabricators in China, India, Europe and the Gulf, including ASME U-stamp holders. Origin, the fabricator’s certification and the inspection agency are stated on each quotation. CRS PLUS does not name fabricators on this page and holds no agency agreement with any of them.
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