Steel Structure Repairs for Cranes and Construction Equipment

Boom, Excavator Arms, and Frame Repairs

After repairs, your machine will be safe to use again and will comply with all legal requirements.

Certified Steel Structure Repair

We are certified to perform steel structure repairs up to material grade StE 1100. Regular audits in accordance with ISO 9001 and ISO 3834-2 attest to our high quality standards.

Monitoring the Repair

Your construction machine is in the best hands with us: Our welding engineer’s thorough supervision of the work ensures its quality. From damage assessment to weld inspections, we perform all work in our workshop.

Repair Methods for Steel Structures

Depending on the damage, we repair the component by straightening it or replacing parts of it.

With our certified welders, high-quality raw materials, and proven welding processes, we are at the cutting edge of technology.

Our welding engineer supervises and inspects all repairs, including weld inspection and documentation of the work.

Welding Certification and Welding Inspection

We hold ISO 9001 certification and the “Full Qualification Certificate” under ISO 3834-2. Our welding engineer plans and supervises the repairs. Our welding procedures are tested and approved by SLV Mannheim. Our employees receive ongoing training. Our work procedures meet the same strict requirements that apply to manufacturers.

Our quality standards:

ISO 9001 and ISO 3834-2.
Certification for steel grades up to StE 1100.
Use of raw materials from leading manufacturers, with test certificates.
Test reports for all repairs.

Frequently Asked Questions

Köhler repairs load-bearing steel structural components, including booms, excavator sticks, excavator arms, adjustable booms, long-front booms, lifting frames, and frames. Depending on the damage, repairs are carried out through straightening or partial replacement. Since 1970, over 1,000 excavator booms, arms, and frames have been repaired.

Load-bearing components are safety-critical and must be repaired in a facility with certified welding qualifications. Köhler holds the “Full Certificate of Competence” in accordance with ISO 3834-2, is certified to ISO 9001, and is authorized to work with steel grades up to StE 1100. The welding procedures are tested by SLV Mannheim, and a certified welding engineer plans and supervises every repair.

The work is supervised by a welding engineer, and welds in tension zones are additionally inspected using X-rays. An inspection report is prepared for each repair. This ensures that the component can be safely returned to service with verifiable documentation and that it complies with legal requirements.

Yes. If a component can no longer be repaired, Köhler manufactures a new one—for example, boom tubes or boom half-shells—using its own 600-metric-ton press. The company uses raw materials from leading manufacturers that come with test certificates.