
A group of six specialized GmbHs for tubes, non-destructive materials testing, heat treatment and services.

Härterei und Qualitätsmanagement GmbH (HQM Gruppe)
Leipzig · Massen · Tröbitz · BürenNew on Amplifa
About the HQM Gruppe
Headquartered in Leipzig, the HQM Gruppe is a group of six highly specialized GmbHs that operates as an established service provider for the automotive, aerospace and motorsport industries as well as casting and forging technology. Core services include the manufacture and assembly of brake pressure lines, exhaust and fuel lines and stainless steel tubing systems by HQM Tubes GmbH at the Massen and Tröbitz sites, including just-in-sequence axle assembly. Althaus Engineering GmbH in Büren offers non-destructive materials testing: dye penetrant testing, magnetic particle testing, ultrasonic testing, digital radiographic testing with a radioscopy system and visual inspection – also mobile and for castings, forgings, weld seams and CFRP. Further areas include hardening technology (heat treatment), training courses and seminars on materials testing and technical cleanliness, container management and personnel services. All services are provided from a single source.
- Site
- Leipzig
- Processes
- Brake pressure lines (manufacture), Stainless steel tubing systems, Just-in-sequence axle assembly, Manufacture, assembly and distribution of brake pressure, exhaust and fuel lines, Manufacture of brake tubes and brake pressure lines, Manufacture of media-carrying tubing systems, Dye penetrant testing (penetrant system, Büren site, also mobile), Magnetic particle testing (laboratory/series part inspection and mobile)
- Materials
- Stainless steel, Ferromagnetic materials, Castings, Forged parts, CFRP (carbon fibre reinforced plastic), CFRP (fibre-reinforced plastic)
- Certificates
- IATF 16949:2016 (excluding product development), DIN EN ISO 50001, ISO 14001, DIN EN ISO 14001, Sicher mit System (NLF / ILO-OSH 2001), Nadcap (NonDestructive Testing), IATF 16949, ISO 50001, Nadcap (NDT)
- Industries
- Automotive, Aerospace, Motorsport, Casting and forging technology
- 01
Manufacture of tubing systems (brake pressure, exhaust, fuel)
- 02
Stainless steel tubing systems
- 03
Just-in-sequence axle assembly
- 04
Heat treatment (hardening technology)
- 05
Non-destructive materials testing
- 06
Container management / personnel services
Materials & Testing Methods
Stainless steel
Used for stainless steel tubing systems at HQM Tubes.
Ferromagnetic materials
Suitable for magnetic particle testing to detect near-surface indications.
Castings
Inspection of cast parts using dye penetrant, magnetic particle and radiographic methods.
Forged parts
Surface and volumetric inspection of forgings and weld seams.
CFRP (fibre-reinforced plastic)
Volumetric inspection (e.g. shrinkage cavities, foreign bodies) using digital radiographic testing.
Locations
Leipzig
DEHolding / administration (Härterei und Qualitätsmanagement GmbH)
Massen
DEProduction HQM Tubes GmbH (brake pressure lines)
- Materials
- Steel, stainless steel
Tröbitz
DEProduction/assembly HQM Tubes GmbH (brake pressure, exhaust and fuel lines)
- Materials
- Steel, stainless steel
Büren
DESite of Althaus Engineering GmbH (non-destructive materials testing)
- Materials
- Castings, forgings, weld seams, CFRP
- Penetrant system (dye penetrant testing)
- Radioscopy system (radiographic testing)
Components & Inspection Tasks



Inside the production





Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Brake pressure lines (manufacture)Joining | – | – | – | – | – |
| Stainless steel tubing systemsJoining | – | – | – | – | Stainless steel |
| Just-in-sequence axle assemblyAssembly | – | – | – | – | – |
| Manufacture, assembly and distribution of brake pressure, exhaust and fuel linesJoining | – | – | – | – | – |
| Manufacture of brake tubes and brake pressure linesJoining | – | – | – | – | – |
| Manufacture of media-carrying tubing systemsJoining | – | – | – | – | – |
| Dye penetrant testing (penetrant system, Büren site, also mobile)Testing | – | – | – | – | Castings, Forged parts, Weld seams |
| Magnetic particle testing (laboratory/series part inspection and mobile)Testing | – | – | – | – | ferromagnetic materials |
| Ultrasonic testing (mobile, automatable)Testing | – | – | – | – | – |
| Digital radiographic testing (radioscopy system)Testing | – | – | – | – | Castings, CFRP |
| Visual inspection (sight inspection)Testing | – | – | – | – | – |
| Hardening technology (heat treatment)Heat treatment | – | – | – | – | – |
| Training courses/seminars (materials testing, technical cleanliness, incoming goods inspection,Engineering | – | – | – | – | – |
| Nadcap-certified non-destructive testing (NonDestructive Testing)Testing | – | – | – | – | – |
2 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Penetrant system (dye penetrant testing) | – | – | – | – | Büren |
| Radioscopy system (radiographic testing) | – | – | – | – | – |
Additional services
Quality & Certifications
The quality management system of HQM Tubes GmbH is certified to IATF 16949:2016 (excluding product development); in addition, environmental and energy management systems to ISO 14001 and ISO 50001 are in place. Althaus Engineering is Nadcap-certified for non-destructive testing (NDT).
| Evidence | Massen | Tröbitz | Büren |
|---|---|---|---|
| IATF 16949 | |||
| ISO 14001 | |||
| ISO 50001 | |||
| Nadcap (NDT) | |||
| Sicher mit System (NLF / ILO-OSH 2001) |
History
- 2018
HQM Induserv GmbH offers tailor-made, individual training courses.
- 2021
Althaus Engineering successfully Nadcap-certified for NonDestructive Testing.