We are the world’s active technology leader in the field of special screw conveyors. We have almost 60 years of experience in the development of customer-specific problem solutions for continuous processes in which explosive, aggressive, abrasive or sensitive bulk products are handled, as well as in the manufacture of process components that guarantee gentle product handling and have a long service life.

Your trust is our obligation: flexible production processes, a high degree of vertical integration, qualified employees and advanced technical know-how enable us to meet even the most demanding requirements. Effective quality and schedule management ensures reliable execution on time.

Our engineers and technicians from the areas of plant planning, engineering, project management, design, production and service ensure the highest quality standards.

KÖLLEMANN GmbH regularly has the performance of its management system audited by independent certification bodies.

After repeated successful certification of our quality management system in accordance with DIN EN ISO 9001:2015, we decided in 2023 to extend the test basis of our system certification to include the environmental management standard DIN EN ISO 14001:2015 and to carry out a combined certification, which we have since completed with positive results.

We thus have a certified quality management system according to DIN EN ISO 9001:2015 and a certified environmental management system according to DIN EN ISO 14001:2015, as well as certificates according to AD2000 regulations and EN ISO 3834.

The certifications in accordance with AD2000 regulations and EN ISO 3834 certify KÖLLEMANN GmbH’s suitability as a manufacturer and welding company, on the test basis AD 2000 leaflet HP 0 /HP 100 R within the framework of the Pressure Equipment Directive DGRL 2014/68/EU Annex I, Para. 3.1. as well as the fulfillment of the quality requirements in accordance with EN ISO 3834-3.

This ensures that KÖLLEMANN GmbH has the following requirements:

  • Facilities that ensure proper and state of the art processing of the materials is guaranteed.
  • Qualified welders as well as expert supervisory and testing personnel.
  • Optimized process sequences
  • Responsible and environmentally friendly use of resources
  • Quality assurance which ensures that products are manufactured and tested in accordance with technical regulations of the products

The certificates confirm the suitability, adequacy and effectiveness of our in-house management system and the resulting ability to consistently deliver products and services that meet the requirements of our customers and authorities.
Customer feedback, process performance, improvement requests, corrective actions, and audit results are incorporated.