Heat Exchangers Services for Industrial Projects
Basic Description
Sagiant Piping Industries designs and fabricates heat exchangers — shell-&-tube, U-tube, fixed tube-sheet, floating-head, air-cooled and plate types — to TEMA, ASME Sec VIII Div 1 and API 660/661 in carbon steel, stainless steel, duplex, Cu-Ni, brass and titanium for oil & gas, power, chemical, pharma and process industries.
Heat Exchangers
We engineer and build thermally-rated heat exchangers for efficient heat transfer across demanding services — selecting tube material, TEMA configuration and code construction to suit your process, pressure and corrosion conditions.
Technical Specification
| Parameter | Specification |
|---|---|
| Types | Shell-&-tube (fixed, U-tube, floating-head), air-cooled (ACHE), plate, double-pipe, kettle reboiler |
| Design Code | ASME Sec VIII Div 1 / Div 2, TEMA R/C/B, API 660 / API 661 |
| Design Pressure | Full vacuum to high pressure (project-specific) |
| Design Temperature | Cryogenic to high-temperature (material dependent) |
| Tube Sizes | ⌀ 5/8", 3/4", 1" (OD); BWG 12–18; per thermal design |
| TEMA Classes | R (refinery/severe), C (commercial/moderate), B (chemical) |
| Stamping | ASME U-Stamp & National Board (NB) registration available |
Materials of Construction
| Material Family | Grades / Specification | Service / Notes |
|---|---|---|
| Carbon Steel Plate | ASTM A516 Gr.60/70, A285 Gr.C, IS 2002, EN P265GH/P355GH | General pressure vessels & boiler drums, moderate temperature |
| Carbon Steel (low-temp) | ASTM A516 + impact tested, A350 LF2 (forgings) | Low-temperature / impact service |
| Alloy Steel (Cr-Mo) | ASTM A387 Gr.11/12/22, A335 P11/P22/P91 (tubes/pipe) | High-temperature & high-pressure boiler / refinery service |
| Stainless Steel | SS 304/304L, 316/316L, 321, 347 (ASTM A240 / A312 / A213) | Corrosion / high-purity / high-temperature process service |
| Duplex / Super-Duplex | 2205 (S31803/S32205), 2507 (S32750) | Chloride & high-strength corrosion service |
| Boiler Tubes | ASTM A179, A192, A210 A1/C, A213 T11/T22/T91 | Heat-transfer tubes for boilers & exchangers |
| Brass / Cu-Ni / Titanium | Admiralty brass, 90/10 & 70/30 Cu-Ni, Titanium Gr.2 | Condenser / cooler tubing, seawater & aggressive media |
Tube Material Selection
| Tube Material | Standard | Typical Service |
|---|---|---|
| Carbon steel | ASTM A179 / A210 | General, non-corrosive media |
| Stainless 304/316 | ASTM A213 / A249 | Corrosive / hygienic process |
| Cr-Mo alloy | ASTM A213 T11/T22 | High-temperature service |
| Admiralty brass | ASTM B111 | Cooling water / condensers |
| Cu-Ni 90/10, 70/30 | ASTM B111 | Seawater / brackish water |
| Titanium Gr.2 | ASTM B338 | Seawater & aggressive chlorides |
Tube material, gauge and layout fixed by thermal & corrosion design; tubes expanded and/or welded to tube-sheet.
Standards & Specifications
| Scope | Applicable Standards / Codes |
|---|---|
| Pressure Vessel Design | ASME Sec VIII Div 1 & Div 2, PD 5500, EN 13445 |
| Boilers | ASME Sec I, IBR (Indian Boiler Regulations), EN 12952 / EN 12953 |
| Heat Exchangers | TEMA (R/C/B class), ASME Sec VIII, API 660 / API 661 |
| Materials | ASME Sec II (A/B/C/D), ASTM A516/A387/A240/A213/A179 |
| Welding & NDE | ASME Sec IX (WPS/PQR), Sec V (NDE); ASME Sec VIII NDE requirements |
| Storage Tanks | API 650 / API 620, UL 142, IS 803, OISD / PESO |
| Quality System | ASME U / U2 / S Stamp & NB registration, ISO 9001, PED 2014/68/EU |
Heat Exchanger Configurations (TEMA)
| Type | TEMA Designation | Best For |
|---|---|---|
| Fixed tube-sheet | BEM / AEL / NEN | Clean shell-side fluids, lowest cost |
| U-tube | BEU / AEU | Thermal expansion, high temp differential |
| Floating-head | AES / AET / BES | Fouling service, mechanical cleaning both sides |
| Kettle reboiler | AKT / BKU | Boiling / vaporizing duty |
| Air-cooled (ACHE) | API 661 | Where cooling water is scarce |
| Plate (gasketed/welded) | — | Compact, high-efficiency liquid-liquid duty |
Testing, Inspection & Documentation
| Test / Document | Detail |
|---|---|
| Hydrostatic / Pneumatic Test | Pressure test to 1.3× (Div 1) or 1.43× MAWP per code; pneumatic where specified |
| Radiography (RT) | Full / spot RT of welds per joint efficiency and code requirement |
| Ultrasonic / PAUT (UT) | Volumetric examination of welds and plate as specified |
| Dye-Penetrant / Magnetic Particle | DP/PT and MPI of welds, nozzles and attachments |
| PWHT | Post-weld heat treatment per thickness / material; charts recorded |
| Material Verification | Mill certificates EN 10204 3.1/3.2, PMI on alloy & stainless |
| Documentation | ASME data report (U-1/U-2), IBR / NB forms, QAP/ITP, as-built dossier |
Applications & Industries Served
Available Forms, Sizes & Range
Forms: bare bundles, complete exchangers, skid-mounted, with insulation & supports.
| Item | Size Range | Wall / Thickness / Rating | Standard |
|---|---|---|---|
| Shell diameter | Per thermal design | Code thickness to MAWP | ASME Sec VIII |
| Tube length | Up to 6–12 m typical | BWG 12–18 | TEMA |
| Nozzles | Per process | Flanged ASME B16.5 | ANSI ratings |
Frequently Asked Questions
Which TEMA type should I choose?
Fixed tube-sheet for clean/low-cost duty; U-tube for high temperature differential; floating-head for fouling service needing mechanical cleaning.
Do you provide thermal design?
Yes — thermal and mechanical design (e.g. HTRI-based) with TEMA datasheets and ASME calculations.
Can you ASME U-stamp the exchanger?
Yes — U-stamped and National Board registered construction is available.
Which tube materials do you offer?
Carbon steel, stainless, Cr-Mo alloy, admiralty brass, Cu-Ni and titanium, selected to the service.
Scope of Work
The heat exchangers scope can include project review, fabrication support, dimensional coordination, inspection documentation and dispatch support for industrial installations.
Applications
For related project work, review Custom Fabrication, Contact Sales or for technical assistance.
Types of Products
| Type | Description |
|---|---|
| Fabricated Assemblies | Built as per drawing and site requirement |
| Sheet Metal Products | Doors, dampers, diffusers and HVAC items |
| Tanks / Skids | Prefabricated tanks and supporting assemblies |
| Custom Items | Project-specific metal fabrication |
Available Forms
Related Pages
From requirement to dispatch
A drawing-led, inspection-backed process for engineered and fabricated supply — the same discipline on every project.
- 01
Requirement Review
Drawing, BOQ, specification and project scope reviewed to confirm feasibility.
- 02
Design & Specification
Material, method, tolerance and finish aligned to the applicable standard.
- 03
Fabrication Planning
Production planned with inspection and test points built into the sequence.
- 04
Inspection & QA
Dimensional and visual inspection against drawing, with documentation as required.
- 05
Packing & Dispatch
Tagging, packing and dispatch documentation for on-time project delivery.
Frequently Asked Questions
What materials does Sagiant Piping Industries supply?
Sagiant Piping Industries can supply stainless steel, carbon steel, alloy steel, duplex, super duplex and nickel alloy products subject to project requirement.
Do you provide MTC and test certificates?
MTC, test certificates, heat number traceability and inspection documents can be coordinated based on the material, standard and project scope.
Can Sagiant supply as per project BOQ?
Yes. The team can review BOQs, line lists, drawings and specifications to support pipes, fittings, flanges, fasteners and fabricated items.
Do you support third-party inspection?
Third-party inspection, PMI and dimensional inspection support can be arranged when required by the enquiry or project documentation.
Can you work from drawings or site requirements?
Engineering and fabrication enquiries can be reviewed from drawings, BOQs, approved samples or project specifications.
Do you provide custom fabrication services for industrial projects?
Custom fabrication support is available for industrial assemblies, tanks, duct accessories, clean room items and project-specific metal works.
A controlled path from requirement to delivery support
A technical RFQ flow built for engineers, QA teams and project buyers who need clear standards, traceability and dispatch documentation.
Requirement Submission
Share product, grade, size, class, quantity, drawing and delivery location.
Technical Review
Review standards, specifications, missing inputs and service conditions.
Material Selection
Align stainless, carbon, alloy, duplex, titanium or nickel alloy grades.
Quotation & Approval
Confirm commercial scope, documents, inspection needs and timelines.
Production / Sourcing
Coordinate manufacturing, stock sourcing or fabrication as per scope.
Quality Inspection
Manage dimensional checks, MTC review, PMI or third-party inspection.
Dispatch & Documentation
Prepare packing, tagging, test certificates and dispatch documents.
Delivery Support
Support delivery coordination, document handover and project closure.
Find the right product path
Choose what you need and jump directly to the correct product, material or engineering section.
304/L, 316/L, 321, 347 and 904L for corrosion-resistant piping, fittings, flanges and fabrication.
View stainless steelASTM A106, A53, A105, API 5L and IS 2062 for pressure, utility and structural supply.
View carbon steelUNS S31803, S32205, S32750 and S32760 for chloride, offshore and desalination service.
View duplex gradesInconel, Monel, Hastelloy, Incoloy and Nickel 200/201 for severe corrosion and heat service.
View nickel alloys