• On schedule

    We work on time.
    Let us convince you of our reliability.

  • Material Professional

    We are experienced deep drilling specialists.
    Consulting from specialist knowledge, also with your workpiece.

  • Flexible

    We have the machines.
    Our redundant machinery works absolutely reliably.

  • Precise

    We drill precise holes.
    For over 70 years.

Deep hole drilling in the wage up to 850mm diameter – no matter if single bore or series

Small hole

less than 70 mm drill diameter

Kleinbohrungen im Bereich Tieflochbohren

On eleven machines, we drill small parts with a bore diameter of up to 70 mm.

Big bore

from 70 mm drilling diameter

Großbohrungen im Bereich Tieflochbohren

On nine machines, we produce precise holes from bore diameter 70 up to 850 mm.

Single hole

Precisely on a small scale

We mainly drill individual parts on request.


Cost effective instead of cheap

Save setup costs and drill in series.

We drill with different drilling methods

You would like to inform yourself about the different drilling methods? Just choose one.


For increased accuracy and / or larger diameter
e.g. Cylinders or rollers

Your partner in deep hole drilling in contract work

Kilian – deep drilling in steel with over 70 years of experience

Our site in Langenfeld is by the Rheinschiene, the main artery for steel supply paths. With our corporate seat between Düsseldorf and Cologne, we offer optimised traffic connections for our customers.

For more than 50 years, we have specialised in centric deep hole drilling in steel. These many years of experience have made us known as a reliable and competent partner in engineering and in the steel industry.

Flexibility, quick times to reaction and reliability are properties that characterise us particularly.

With 22 deep hole drilling machines, we have a comprehensive machinery range and process approx. 9,000 individual orders per year – from individual components to large series.

As a family-owned company with 60 employees, we are among the established specialist companies in the industry.

With the know-how of our specialists and our large range of machinery, we efficiently implement various production processes. With our certified quality management, every work step is subject to continuous control by our regularly trained specialists.

In addition to deep hole drilling in the BTA procedure, we offer our customers sawing, preturning, honing and pull boring of tubes.

We machine workpieces with a length of up to 20 m and a weight of up to 50t.

Do you have questions about Kilian?

Give us a call!

Even if you have no concrete question, we are happy to answer questions about workpieces, machinery, processing or your career at Kilian – Deep Drilling in Steel!