Become a supplier for punker

Purchasing strategy, supplier self-disclosure, material groups and contact persons

punker is constantly looking for new partners. Quality, flexibility and reliability are particularly important to us. We also expect our customer promise from our suppliers.

Here you will find an overview of punker purchasing.


Our purchasing strategy

It is essential for punker's business success that our customers receive their product at the right time, in excellent quality and at a price in line with the market.

To achieve this, punker relies on suppliers who meet these requirements in line with punker's mission statement.To this end, punker strives together with its suppliers for continuous and sustainable improvement in terms of quality, delivery capability and cooperation.

punker stands for partnership-based, sustainable and transparent cooperation and is also constantly driving forward digitalization in the area of purchasing. Do you share these aspirations? Then let's move forward together.

Our material groups

Raw material

For the production of punker fan wheels, inlet nozzles and customer-specific attachments, punker GmbH in Eckernförde processes several thousand tons of steel, aluminum and stainless steel every year. In order to be able to offer our more than 1,000 customers worldwide products on the agreed delivery dates with consistently high quality, we work together with partners who stand for a high degree of adherence to delivery dates and constant innovative spirit. In the area of raw materials, punker GmbH processes the following materials:

  • Sheet and slit strip in steel, aluminum and stainless steel (NiRo)
  • Bar stock in steel, aluminum and stainless steel (NiRo)

Your contact person for sheet and slit strip is Stefan Langer

Your contact person for bar stock is Christoph Jürgensen

Surface finishing

In order to ensure the resistance of punker fan wheels to even the toughest environmental influences and mechanical stresses and to be able to supply our customers with products in line with their individual brand image, they are finished after the assembly process, depending on the customer application. punker counts on the expertise of high-performance partners who offer the following services:

  • Powder coating
  • Anodizing
  • KTL coating

Your contact for this material group is Stefan Langer

Forming and machining technology

A high degree of vertical integration sets punker GmbH apart from its market competitors. The in- house toolmaking department develops and builds tools for punching and forming parts as well as individual automatic machines and complete assembly islands for the production of punker fan impellers. In addition, punker's machining department manufactures, among other things, hubs for the wheel-motor connection of our products. In individual cases, punker procures the following goods from the forming and machining technology sector:

  • Turned parts and milled parts in steel, aluminum and stainless steel (NiRo)
  • folded parts, bent parts and spinning parts
  • Castings and forgings

Your contact for milled, bent and spun parts as well as castings and forgings is Stefan Velfe

Your contact person for turned parts is Christoph Jürgensen

Standard parts

For the purchase of standard parts or DIN parts we rely on specialized manufacturers of the following parts:

  • Screws
  • ball bearings
  • Rivets

Your contact person for this material group is Stefan Velfe

Indirect material

In the area of indirect requirements, punker GmbH purchases the following goods, among others:

  • Electronic parts, especially motors
  • Welding consumables, goods for welding technology
  • Pneumatic supplies
  • Hygiene supplies and office materials 
  • Personal protective equipment (PPE)

Your contact person for this material group is Stefan Velfe

Supplier self-disclosure

Would you like to work as a supplier with Europe's leading fan wheel manufacturer? Please first fill out our supplier self-assessment form so that we can get an initial overview of your company.

Open questionnaire

Your contact persons in punker purchasing


Stefan Langer

Head of Purchasing & Logistics



Stefan Velfe

Commodity Manager



Christoph Jürgensen

Commodity Manager