OEM stainless steel tank manufacturer

Precision. Scalability. Engineering expertise

ACT is a dedicated business unit of AIC, focused on the design and manufacturing of custom stainless steel water tanks for OEM systems. We support our partners with engineering, prototyping and scalable production — from pilot batches to high-volume manufacturing.

The reliability of an engineering-driven manufacturer

The reliability of an
engineering-driven manufacturer

With over 25 years of experience in stainless steel pressure equipment, ACT combines engineering expertise with automated manufacturing.


We design and produce stainless steel buffer tanks, indirect water heaters and chilled water tanks for OEM systems — always tailored to specific performance and integration requirements.


Our stainless steel–dedicated facility eliminates contamination risk and ensures consistent, high-quality production. From low-volume prototypes to large-scale series, our automated production line guarantees repeatability, precision and scalability.

We engineer solutions, not just tanks

We engineer solutions, not just tanks

Engineering support
From concept to final product — we help design tanks optimized for your system.

Manufacturing precision
Automated production ensures consistent quality across every unit.

Scalable production
From prototype to 100,000+ units — same technology, same quality.

What makes ACT a reliable OEM partner

What makes ACT a reliable OEM partner

Engineering
& Technology

20+ years of stainless steel engineering expertise

20+ years of stainless steel engineering expertise

20+ years of stainless steel
engineering expertise

Custom tank design for HVAC, hot water and energy systems

Custom tank design for HVAC, hot water and energy systems

Custom tank design for HVAC,
hot water and energy systems

Advanced laser welding for long-term durability

Advanced laser welding for long-term durability

Advanced laser welding

for long-term durability

Fully automated and repeatable production process

Fully automated and repeatable production process

Fully automated and repeatable
production process

Stainless steel–dedicated facility (no contamination risk)

Stainless steel–dedicated facility (no contamination risk)

Stainless steel–dedicated facility
(no contamination risk)

Production
& Supply

Scalable OEM tank manufacturing
(prototype to mass production)

Scalable OEM tank manufacturing
(prototype to mass production)

Up to 30 million liters annual production capacity

Up to 30 million liters annual production capacity

Up to 30 million liters annual

production capacity

Flexible production volumes — no MOQ limitations

Flexible production volumes — no MOQ limitations

Certified European stainless steel supply chain

Certified European stainless

steel supply chain

Certified European stainless steel
supply chain

Full material traceability and quality control

Full material traceability

and quality control

Full material traceability
and quality control

Our expertise
in stainless steel
tank manufacturing

We design and manufacture custom stainless steel tanks for a wide range of OEM applications in heating, HVAC and energy systems.

Stainless steel buffer tanks

Indirect water heaters

Chilled water tanks

Custom stainless steel pressure tanks

OEM tank manufacturing

Why OEM partners
choose ACT

We help manufacturers simplify their supply chain while maintaining full control over quality, performance and scalability.

We help manufacturers simplify their supply chain while maintaining full control over quality, performance and scalability.

Short Lead Times
We align with your production schedule

Short Lead Times
We align with your
production schedule

Fast Quotation Turnaround
We respond quickly to engineering
and commercial requests

Technical Optimization
We improve tank design for performance,

cost and manufacturability

Technical Optimization
We improve tank design
for performance, cost and manufacturability

Technical Optimization
We improve tank design for performance, cost and manufacturability

Scalable production
From pilot batches to high-volume series

Scalable production
From pilot batches
to high-volume series

Scalable production
From pilot batches
to high-volume series

Looking for
a reliable OEM
tank partner?

Looking for
a reliable OEM
tank partner?

Work with our engineering team to design and manufacture custom stainless steel water tanks tailored to your system.

Work with our engineering team to design and manufacture custom stainless steel water tanks tailored to your system.

Contact our

engineering team

Contact our

engineering team

How can we support your project?
AIC S.A.
ul. Rdestowa 41
PL 81-577 Gdynia,
Poland

Share capital: 7 777 777,00 PLN
NCR No 0000456510,
VAT No PL 589 19 36 466

How can we support your project?

AIC S.A.
ul. Rdestowa 41
PL 81-577 Gdynia,
Poland

Share capital: 7 777 777,00 PLN
NCR No 0000456510,
VAT No PL 589 19 36 466