EN

Heat Exchanger Engineering Capabilities

SAG Industries provides heat exchanger engineering services for demanding industrial applications, from thermal design and mechanical calculations to manufacturing and testing. Our in-house engineering team develops custom heat exchangers and process equipment according to operating conditions, materials, design codes and project requirements.

Our engineering capabilities cover the complete development process, including thermal sizing, mechanical design, construction drawings, material selection, reverse engineering and manufacturing support.

Heat Exchanger Engineering & In-House Design

Our heat exchanger engineering team handles all phases of equipment development, from thermal design and mechanical calculations to construction drawings and manufacturing support. Keeping engineering and production expertise in-house enables fast communication, flexible execution and close coordination between design and manufacturing teams.

Our heat exchanger engineering process also considers material selection according to operating conditions, corrosion requirements and applicable design codes. Discover the materials used for our heat exchangers and process equipment.

Our engineers design heat exchangers according to project requirements and applicable international construction codes, including :

ASME VIII

ASME III

CODAP 2022

AD-MERKBLÄTTER

EN 13445

TEMA RCB

Retro-engineering and diagnosis

SAG can also enhance the efficiency of your existing units through reverse engineering, ensuring that your heat exchangers always deliver optimal performance. This is made possible by our extensive expertise in designing and manufacturing heat exchangers and process equipment for a wide range of industries for over 100 years.

Heat Exchanger Research & Development

Our research and development activities continuously improve SAG Industries’ heat exchanger engineering, sizing and manufacturing capabilities. We study new designs, materials and manufacturing approaches to develop more efficient and application-specific solutions for our clients.

Workshops

Our engineering capabilities are directly supported by three specialized manufacturing workshops. This integrated engineering and manufacturing structure allows SAG Industries to manage custom heat exchanger and process equipment projects from design through fabrication.

INDUSTRY

Situated in Sainte-Cécile, this workshop is dedicated to industrial equipment for sectors like petroleum, industry, engineering, etc.
It includes our heaviest equipment, from heavy duty lifting cranes to high tech welding machines supervised by qualified operators, managed in top of the line security standards.

Floor area: 4700 m²
Lifting capacity: 80T
Study and production capacity: 200 units/year

Maximum diameter: 4m
Maximum length: 20m
Maximum welding thickness: 60mm

PHARMA

Situated in Florenville, nearby Sainte-Cécile, this clean-shop is dedicated to aseptic applications such as pharmaceuticals, fine chemistry and food industry.
Including specific capabilities tied to aseptical or fine chemistry needs, this workshop has its dedicated qualified team, working in all confidentiality and safety. SAG Pharma also possesses its own offices for on site management.

Floor area: 1200 m²
Lifting capacity: 1T
Maximum diameter: 460 mm

Maximum length: 6 m
Study and production capacity: 150 units/year

SPECIAL EQUIPMENT

Situated just beside the SAG Pharma workshop, our Special Equipment workshop specialise in equipment for sectors such as defense, nuclear, skyved fins exchangers and other special applications.
This specific workshop allows for confidentiality and allocated space and workers for these applications.

Floor area: 1500 m²
Lifting capacity: 30T

Maximum diameter: 3 m
Maximum length: 20 m

INDUSTRY

Situated in Sainte-Cécile, this workshop is dedicated to industrial equipment for sectors like petroleum, industry, engineering, etc.
It includes our heaviest equipment, from heavy duty lifting cranes to high tech welding machines supervised by qualified operators, managed in top of the line security standards.

Floor area: 4700 m²
Lifting capacity: 80T
Study and production capacity: 200 units/year

Maximum diameter: 4m
Maximum length: 20m
Maximum welding thickness: 60mm

PHARMA

Situated in Florenville, nearby Sainte-Cécile, this clean-shop is dedicated to aseptic applications such as pharmaceuticals, fine chemistry and food industry.
Including specific capabilities tied to aseptical or fine chemistry needs, this workshop has its dedicated qualified team, working in all confidentiality and safety. SAG Pharma also possesses its own offices for on site management.

Floor area: 1200 m²
Lifting capacity: 1T
Maximum diameter: 460 mm

Maximum length: 6 m
Study and production capacity: 150 units/year

SPECIAL EQUIPMENT

Situated just beside the SAG Pharma workshop, our Special Equipment workshop specialise in equipment for sectors such as defense, nuclear, skyved fins exchangers and other special applications.
This specific workshop allows for confidentiality and allocated space and workers for these applications.

Floor area: 1500 m²
Lifting capacity: 30T

Diameter: 3 m
Length: 20 m

FAQ

SAG Industries' engineering team covers the full scope of heat exchanger and process equipment design: thermal sizing and optimisation, mechanical design in accordance with TEMA, ASME, and PED requirements, pressure vessel calculation, nozzle and flange engineering, material selection, and fabrication drawing production. Thermal calculations are performed using specialised process simulation software as well as test sessions, ensuring that the specified equipment will deliver the required heat duty under the operating conditions.

Yes. SAG Industries regularly receives projects at the process datasheet stage ( inlet and outlet conditions, fluid properties, fouling factors, allowable pressure drops, etc) and develops the full equipment design from that basis. This front-end engineering service allows clients to outsource the heat exchanger specification entirely, come with their specific data or also revamp their existing units.
Designing a shell and tube heat exchanger involves determining the geometry that achieves the required thermal duty within the allowable pressure drop, while meeting the mechanical constraints of the application. Key design parameters include the number of tubes, tube diameter and wall thickness, tube pitch and layout (triangular or square), baffle spacing and cut, shell diameter, number of passes, and nozzle sizing. Material selection, tube-to-tubesheet joint design, and TEMA type designation are also integral to the design process. Each of these parameters interacts with the others, which is why experienced thermal-mechanical engineering is essential to arrive at an optimised solution rather than a merely compliant one.
 SAG Industries applies the full scope of mechanical calculations required under ASME and PED for pressure vessel design, including tubesheet calculations, nozzle reinforcement, flange design, and support sizing. For non-standard geometries or specific loading cases, advanced analysis methods including finite element analysis can be engaged as part of the engineering scope. This is discussed and agreed at the project definition stage.
Yes. SAG Industries has experience fabricating equipment in Inconel 625, Incoloy 825, Hastelloy C-276, and Hastelloy C-22. These nickel-based alloys are specified for highly corrosive services (concentrated acids, high-temperature oxidising environments, halide-containing streams) where stainless steel or duplex grades are insufficient. Fabrication in nickel alloys requires specific welding procedures, qualified welders, and dedicated inspection protocols, all of which are part of SAG's workshops capabilities.
Reverse-engineering refers to the process of reconstructing the thermal and mechanical design of an existing piece of equipment in order to produce an equivalent or improved replacement. SAG Industries performs reverse-engineering based on physical inspection of the existing unit and available operating data. It is the right solution when a client needs to replace obsolete equipment quickly, when the original manufacturer no longer exists, or when the objective is to improve performance relative to the original design without starting from a blank specification.