
Hydraulic and pneumatic components, hose assembly, central lubrication systems and testing service from Bielefeld

Karl Heitz Industrievertretungen GmbH
Senner Straße 151, 33659 BielefeldNew on Amplifa
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Karl Heitz Industrievertretungen GmbH, founded in 1985, is a supplier and service provider in the field of hydraulics and pneumatics based in Bielefeld, in the economically strong region of East Westphalia. The family-owned company with more than ten employees distributes hydraulic fittings, hose and tube clamps, fastening elements, quick couplings, pipe connections, hydraulic hoses, pressure sensors, pressure gauges as well as central lubrication systems from leading manufacturers such as VOSS, NORMA Group, TECALAN, STAUFF, Semperit, Benteler and Oetiker. In its own production facility, hydraulic hose lines are assembled with CNC support and fittings are crimped onto the hose; on a Uniflex P200 test bench, non-destructive operating pressure tests up to 1300 bar are performed with test report and test certificate. Further services include the design and pre-assembly of central lubrication systems, sample analysis, supplier audits, master data exchange and stockpiling of around 3,000 items from access to more than 100,000 items in total, with delivery within 24 hours from stock. Customers include, among others, general mechanical engineering, the packaging, printing/paper, food, agricultural, automation, medical, textile and process engineering industries as well as shipbuilding and utility and waste disposal engineering.
- Site
- Bielefeld
- Processes
- Assembly of hydraulic hose lines (crimping of fittings onto the hose), CNC-supported hose production, Operating pressure testing of hose lines (non-destructive testing up to 1300 bar, on the test bench, Quality inspection of incoming goods: measurements accompanying production, run-out testing,, Sample analysis (evaluation of failure samples and used components), Pre-assembly of small assemblies / ready-to-install modules for central lubrication systems, Design and planning of central lubrication systems, Trading, warehousing, distribution and assembly of technical industrial products (hydraulic and
- Materials
- Stainless steel (VOSS hydraulic fittings), Steel with zinc-nickel surface (VOSS coat), Brass (VOSS fittings), Polyamide tube lines (TECALAN PA tubes), Polyethylene (LLDPE) plastic tubes, NORMAPLAST plastic hose connectors, Stainless steel (NORMA clamps, grease nipples), Benteler hydraulic tubes phosphated
- Certificates
- DIN EN ISO 9001:2015
- Founded
- 1985
- Employees
- 10+
- Industries
- General mechanical engineering, Packaging industry, Printing/paper, Food industry, Agricultural technology, Automation technology
- 01
Consulting and product selection
- 02
Purchasing from over 50 regular suppliers
- 03
Warehousing and stockpiling
- 04
Assembly and CNC-supported hose production
- 05
Operating pressure testing and quality inspection
- 06
Pre-assembly of assemblies and modules
- 07
Logistics and delivery with own vehicle fleet
Materials and Processes
Stainless steel
Material for VOSS hydraulic fittings, NORMA clamps and grease nipples, among other things for the food industry.
Steel with VOSS coat surface
High-quality corrosion protection for hydraulic fittings and hose assemblies.
Brass
Material for fittings in hydraulics and metrology.
Polyamide (TECALAN PA tubes)
Plastic tube lines with plug-in connectors for pneumatic and hydraulic applications.
Polyethylene (LLDPE)
Plastic tubes for applications in the food industry with FDA compliance.
Rubber (low-pressure rubber hoses)
Semperit hydraulic hose lines and low-pressure hoses for industrial applications.
Phosphated and galvanized steel (Benteler)
Hydraulic tubes in various surface finishes for mechanical and plant engineering.
Locations

Bielefeld
DEHeadquarters, warehouse, hose assembly, testing services
- Materials
- Stainless steel, steel, brass, plastic, rubber
- CNC-supported hose production system
- Hose crimping machine for assembly
- Uniflex P200 test bench (operating pressure test up to 1300 bar)
- Pressure test bench
- Universal testing machine
- 2D measuring machine
- Shore hardness tester
- Tube forming machine VOSSForm 100 (rental)
Components and Products





Inside the production




Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Assembly of hydraulic hose lines (crimping of fittings onto the hose)Joining | – | – | – | – | Thermoplastic hydraulic hoses, Low-pressure rubber hoses, Steel (VOSS coat zinc-nickel surface) |
| CNC-supported hose productionJoining | – | – | – | – | – |
| Operating pressure testing of hose lines (non-destructive testing up to 1300 bar, on the test benchTesting | – | – | – | – | – |
| Quality inspection of incoming goods: measurements accompanying production, run-out testing,Testing | – | – | – | – | – |
| Sample analysis (evaluation of failure samples and used components)Testing | – | – | – | – | – |
| Pre-assembly of small assemblies / ready-to-install modules for central lubrication systemsAssembly | – | – | – | – | – |
| Design and planning of central lubrication systemsEngineering | – | – | – | – | – |
| Trading, warehousing, distribution and assembly of technical industrial products (hydraulic andAssembly | – | – | – | – | – |
7 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Hose test bench operating pressure testing | Uniflex P200 | 1 | – | – | Bielefeld |
| Universal testing machine | – | – | – | – | Bielefeld |
| Pressure test bench | – | 1 | – | 2013 | Bielefeld |
| 2D measuring machine | – | – | – | – | Bielefeld |
| Shore hardness tester | – | – | – | – | Bielefeld |
| CNC-supported hose production system | – | – | – | 2013 | Bielefeld |
| Tube forming machine (rental) | VOSS VOSSForm 100 | – | – | – | Bielefeld |
Additional services
Quality
Quality inspection includes an extended incoming goods inspection with 2D measuring machine, universal testing machine, Shore hardness tester, run-out testing and microscopic examination as well as measurements accompanying production. Hose lines are tested non-destructively up to 1300 bar on the Uniflex P200 test bench, with complete documentation, test report and test certificate.
| Evidence | Bielefeld |
|---|---|
| DIN EN ISO 9001:2015 |
Eventful Times – on the Market since 1985
- 1985
Foundation of Karl Heitz Industrievertretungen GmbH
- 1992
Sales partnership with VOSS Holding; move to the new company building in Bielefeld-Senne
- 1999
Introduction of the BaaN IV merchandise management system, certification according to DIN ISO 9001 and warehouse expansion from 900 to 1800 m²
- 2000
Sales partnership with VOSS Holding GmbH & Co. KG
- 2008
Introduction of a new merchandise management system; modernisation of network and server landscape
- 2009
Generational change in management; go-live of the new merchandise management system
- 2012
Optimisation of the incoming goods process and warehouse location management
- 2013
Modernisation of hydraulic hose production with CNC-supported manufacturing and a new pressure test bench; introduction of test protocols
- 2014
Modernisation of interior and exterior areas in Bielefeld
- 2015
30th anniversary of Karl Heitz Industrievertretungen GmbH in Bielefeld
- 2016
Increase in efficiency through organisation into purchasing and sales departments
- 2017
Certification according to DIN EN ISO 9001:2015
- 2018
Rental concept VOSSForm 100
- 2022
Launch of the Heitz eShop