FB Ketju is the Conveyor Chain Manufacturer with 80+ Years of Proven Expertise
High-Quality Manufacturing backed by ISO Standards and Environmental Commitment
FB Ketju manufactures wide range of conveyor chains, related chain components and sprockets for a wide range of customers, in various industries, in its production facilities at Rauma Lappi.
Our production facility is one of the most advanced in Europe.
We are known for the high quality of our chains and service, as well as our way of working closely with our customers in product design, maintenance, purchasing and production management. In this way, we provide customers with the best solutions for all their conveyor chain needs. FB Ketju became the first chain manufacturer in Scandinavia to be granted an ISO9000 certification in 1993.
We use high quality materials that can be recycled. Continuous commitment to the environment FB Ketju was awarded ISO14001 environmental certification back in 2002.
The Global Network and Financial Strength of FB Group and Addtech
The FB Group is a Network for Highly Specialized Chain Solutions
FB Ketju is a key part of the FB Group, a network of seven European companies, each focusing on a specific chain product. This structure ensures that every customer benefits from highly specialized solutions and related components globally. You can always trust that you are ordering the precise chain you need from a local FB company within this expert network.
Combining Expert Flexibility with Addtech's Global Resources
The FB Group companies are owned by Addtech AB, a Swedish listed technical trading company. The group consists of around 140 individual companies selling high-tech products and solutions, mainly to customers in the industrial and infrastructure sectors in around 20 countries.
Addtech creates optimal conditions for companies' productivity and growth. Addtech combines the flexibility, entrepreneurial approach and efficiency of a small company with the resources, networks and long-term vision of a large enterprise.
Decades of Steady Growth – The History of FB Ketju
FB Ketju's 80-year journey, which began in 1945, has been filled with significant milestones and changes. Ownership, the company name, and locations have evolved, production has grown, and operational methods have developed. Rising demand has been met with high quality and, particularly in recent years, with major investments.
1945
Oy Ammus and Oy Sytytin manufacture military equipment in Rauma until production ends in the autumn of 1944 with the armistice agreement signed with the Soviet Union. The munitions factory is repurposed into a machine shop and becomes involved in war reparations. This marks the beginning of chain production in Rauma.
Between 1945 and 1948, Oy Ammus delivers railway wagons and a total of 45 km of various roller and conveyor chains to the Soviet Union. After reparations, conveyor systems become the factory’s main line of business, especially for the pulp, paper, chemical, and metallurgical industries.
1959
Ammus Oy and Sytytin Oy merge to form Ammus-Sytytin Oy. Prior to this, Ammus Oy acquired Kareko Oy, launching the company’s standardized chain production.
1972
Ammus-Sytytin Oy becomes Lönnström Oy. Rafael Lönnström had acquired a majority share already in 1940. In 1973, Lönnström Oy is acquired by Huhtamäki.
1985
Swedish group Trigon Industri AB acquires Huhtamäki’s chain division and establishes Suomen Ketjutekniikka Oy.
1989
The newly introduced Profile Chain gains strong market share, especially in Finland’s wood processing sector. Production volumes match those of comparable ISO chains.
1993
FB Ketju becomes the first conveyor chain manufacturer in the Nordics to be certified with the ISO 9001 quality system.
1999
On January 25, the company changes its name to FB Ketjutekniikka Oy. Other group companies adopt similar names and logos. Trigon Industri AB becomes FB Industri AB and centralizes all conveyor chain production in Köyliö.
2000
Swedish Addtech AB acquires FB Industri. Within two years, it owns all current FB companies.
2015
FB 1000 chain is developed in cooperation with Ovako AB and Tampere University, and it becomes a registered trademark.
2017
Mika Suomi starts working as Sales Manager. He becomes Sales Director in 2018, and assumes the role of CEO in 2021.
2019
Part of the chain factory relocates from Köyliö to Lappi, Rauma (Yrittäjäntie 14). Assembly and welding lines are moved to Lappi. Operations continue in both locations. The workforce grows to over 90 employees—the highest in company history.
At all remaining operations, including pin, bush, and plate cells, move from Köyliö to Lappi at 2021. The modern facility now houses all operations under one roof—about 6,000 square meters compared to the former 3,300 m² spread across multiple buildings. A steel storage yard is added.
2023
FB Ketju records its highest-ever revenue: approximately €14.7 million. The U1 welding line in Lappi is modernized. Two 1,000 m² PVC halls are built. LED lighting is installed throughout the facility.
2025
FB Ketju celebrates its 80th anniversary in June. The company employs 58 people: 46 in production and 12 in office. Revenue in 2024 is just under €12 million.