STOLLE quality

Our high quality standards are your added value

Certified according to DIN EN ISO 9001

Wilhelm Stolle GmbH offers the highest quality for all its own products and is certified according to DIN EN ISO 9001. STOLLE cast products are made of dense special cast iron with added steel and have a uniform surface structure.

Our special casting process guarantees that the casting is stress-free, while CNC-supported finishing ensures µm-accurate precision. Our in-house factory standard defines and standardises the production processes and guarantees the highest possible process reliability.

Download DIN EN ISO 9001

Wilhelm Stolle GmbH

Machine factory & Iron foundry

Broichstrasse 78-90
53227 Bonn, Germany

 Customer benefits

Customer benefits

As a strategic partner for clamping plates, we offer you the complete STOLLE system from A to Z. Whether consulting for the technical design of the clamping plates or turnkey solutions in test bench technology - we act competently, efficiently and reliably. As an owner-managed company, we are always agile and convince with on-time delivery and high flexibility through vertical integration.

More about our customer benefits

Our objective for environmental management by 2024

Social responsibility and sustainable action are important to us. We are therefore pursuing measures to ensure greater sustainability within our industry-specific framework conditions. Wilhelm Stolle GmbH is therefore aiming for ISO 14001 environmental management certification by spring 2024. To this end, the management has formulated a written declaration of intentions and objectives in the area of environmental protection. The internal EMS project will then be launched with the support of external consultants.

Environmental standards at STOLLE

Environmentally oriented thinking and action are essential factors of our corporate philosophy. Our goal is to minimise the impact of our operations on the environment and our neighbourhood.

Beyond compliance with legal requirements, we are therefore committed to continuous improvement of operational environmental protection as well as environmental management.

Low emission values

The production processes at STOLLE are constantly monitored. The materials, production processes and technical equipment used are checked for their potential hazards and, if necessary, improved - or replaced by more environmentally friendly alternatives. Modern cupola furnaces with post-combustion as well as generously dimensioned waste gas purification and dust removal systems ensure that the emission limits set by law are kept far below. We also expect our contractual partners to comply with environmental protection requirements.

High recycling rate

Waste materials are either returned to the production process or recycled in an environmentally friendly way: by using modern sand processing plants, 97 percent of the furan sand can be reused for core production. Cast iron scrap is melted down and processed into new grey cast iron. Slag is used in road construction. The extracted dusts are reused in external recycling companies.

Key data on environmental management

Process monitoring

Regular dust measurements, noise partitioning of buildings

Process improvement

Efficient use of natural resources,
High recycling rates, continuous further development of corporate environmental protection

Process control

Emission and immission measurements, review of improvements for effectiveness, responsibility of all employees