CLOOS Company Profile: Business, Figures, Products and Ownership
Updated: 7 days ago

CLOOS is a German specialist in welding technology and robotic welding systems, with more than 100 years of history. The group has about 1,000 employees and turnover of EUR 230 million. This profile sets out its business, figures, products and ownership links.
CLOOS at a Glance
Fact | Detail |
Company | Carl Cloos Schweisstechnik GmbH |
Country | Germany |
History | More than 100 years |
Employees | About 1,000 |
Group turnover | EUR 230 million |
Subsidiaries | 16 worldwide |
Production sites | 10 worldwide |
In-house production | 90% of main components |
Business
CLOOS develops and builds welding power sources, welding robots and complete automated welding systems. It makes about 90% of the main components itself, which is unusual in an industry that often buys robots and power sources from different suppliers.
Products
Product | Description |
QIROX robot systems | Robot welding systems, including WeldExperT compact cells |
RoboPlan and RoboPlan Smart | Offline programming software |
Quick Weld Programming and EasyWeld | Tools that simplify the programming of weld seams |
RoboScan | Scanning for component recognition |
TANDEM+ | The company's latest high-deposition welding process |
Ownership
The Chinese robot maker ESTUN Automation completed the purchase of a stake in CLOOS in 2020, according to public accounts of ESTUN's acquisitions. CLOOS continues to operate under its own name.
What Is Not Covered
The company page retrieved for this profile does not state the founding year, headquarters town or management, so those are left out.
Strengths and Challenges
Strengths
A century of welding process knowledge.
Robots, power sources and software from one maker.
A worldwide network of 16 subsidiaries.
Challenges
A specialized market tied to heavy industry and vehicle manufacturing.
Competition from larger robot makers with welding packages.
CLOOS FAQ
What does CLOOS make?
Welding power sources, welding robots and complete robotic welding systems under the QIROX name.
How big is CLOOS?
About 1,000 employees and group turnover of EUR 230 million.
Is CLOOS connected to ESTUN?
Yes. ESTUN Automation completed the purchase of a stake in CLOOS in 2020.
How many locations does CLOOS have?
16 subsidiaries and 10 production sites worldwide.
What is TANDEM+?
CLOOS's latest welding process, which the company describes as the next stage in the evolution of tandem welding.





