
Trading and processing of steel pipes and pipe accessories, including corrosion protection and coating to AGI Q 151.
KLEIN Stahlvertrieb GmbH
Bornheim · EuskirchenNew on Amplifa
About Kleinstahl
KLEIN Stahlvertrieb GmbH is an owner-managed steel trading company founded in 1991 and headquartered in Bornheim between Cologne and Bonn. The company supplies steel pipes and pipe accessories in all nominal sizes, welded and seamless, including boiler tubes to EN 10217-1 and EN 10216-1, threaded pipes to EN 10255, and unalloyed boiler tubes. A key focus is the supply of refrigeration pipes coated to AGI Q 151 for refrigeration, air conditioning and chilled water systems. In addition to storage and logistics, Kleinstahl offers processing services: sawing to fixed lengths, grooving and knurling (roll grooving), thread cutting, turning and milling, as well as corrosion protection through powder coating, galvanizing, interior and exterior coatings, PE or bitumen wrapping, cement mortar linings and blasting. Customers from refrigeration and air conditioning, heating technology, sprinkler systems and building services are supplied nationwide and in neighboring countries, primarily on construction sites. Its own vehicle fleet including crane trucks complements the delivery logistics.
- Site
- Bornheim
- Processes
- Sawing to fixed lengths, Turning, Milling, Grooving/knurling (roll grooving), Thread cutting, Powder coating (e.g. RAL 3000), Galvanizing, Interior and exterior coatings, primers and topcoats
- Materials
- Unalloyed boiler tubes, welded, Unalloyed boiler tubes, seamless, Threaded pipes, Alloyed boiler tubes, Stainless steel pipes (rust-, acid- & heat-resistant), Carbon steel (pipes and pipe accessories), Precision steel pipes, Hydraulic line pipes
- Certificates
- Coating to AGI Q 151, Coating thickness measurement
- Founded
- 1991
- Employees
- 11–50
- Industries
- Refrigeration and air conditioning technology, Heating technology, Sprinkler/fire extinguishing systems, Building services / utility technology / building technology, Industry
- 01
Procurement and stockpiling of steel pipes and pipe accessories
- 02
Storage (including per AGI Q 151)
- 03
Machining (sawing, grooving/knurling, threads, turning, milling)
- 04
Corrosion protection and coating
- 05
Quality control (e.g. coating thickness measurement)
- 06
Delivery with own vehicle fleet, incl. crane trucks
Product Range and Materials
Unalloyed boiler tubes, welded
Welded unalloyed boiler tubes for refrigeration, heating and utility systems.
Unalloyed boiler tubes, seamless
Seamless unalloyed boiler tubes for building services installations.
Threaded pipes
Welded and seamless threaded pipes for piping construction and installation.
Unalloyed boiler tubes, welded
Unalloyed boiler tubes for heating and plant engineering.
Unalloyed boiler tubes, seamless
Seamless unalloyed boiler tubes for pressure-bearing installations.
Refrigeration pipes coated to AGI Q 151
Coated pipes for refrigeration, air conditioning and chilled water systems.
Stainless steel pipes (rust-, acid- and heat-resistant)
Stainless steel pipes for demanding corrosion and temperature loads.
Precision steel pipes
Precision pipes for hydraulic and mechanical applications.
Hydraulic line pipes
Pipes for hydraulic lines in industry and mechanical engineering.
Sprinkler pipes (galvanized / powder-coated RAL 3000)
Pipes for sprinkler and fire extinguishing systems with corrosion-protective surface.
Available from factory stocks or as custom-made products to customer specifications.
Locations

Bornheim
DEHeadquarters, warehouse and logistics
- Materials
- Carbon steel, stainless steel
- Warehousing of pipes and pipe accessories in all nominal sizes
- Machining (sawing, turning, milling, roll grooving, threads)
- Coating and corrosion protection
- Own vehicle fleet incl. crane trucks
Euskirchen
DELocation (warehouse/logistics)
Product Range


Inside the production




Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Sawing to fixed lengthsMachining | – | – | – | – | Steel, Stainless steel |
| TurningMachining | – | – | – | – | Steel |
| MillingMachining | – | – | – | – | Steel |
| Grooving/knurling (roll grooving)Machining | – | – | – | – | Steel |
| Thread cuttingMachining | – | – | – | – | Steel |
| Powder coating (e.g. RAL 3000)Surface | – | – | – | – | Steel |
| GalvanizingSurface | – | – | – | – | Steel |
| Interior and exterior coatings, primers and topcoatsSurface | – | – | – | – | Steel |
| PE or bitumen wrappingSurface | – | – | – | – | Steel |
| Cement mortar liningsSurface | – | – | – | – | Steel |
| BlastingSurface | – | – | – | – | Steel |
| Coating to AGI Q 151 (refrigeration pipe)Surface | – | – | – | – | Steel |
| Coating thickness measurements (quality control)Testing | – | – | – | – | Steel |
| Storage and logistics of pipes in accordance with AGI Q 151Engineering | – | – | – | – | Steel |
Additional services
Quality
Quality control includes, among other things, coating thickness measurements on coated pipes; storage is carried out in accordance with AGI Q 151.
| Evidence | Bornheim |
|---|---|
| Coating to AGI Q 151 | |
| Coating thickness measurement |
History
- 1991
Founded; since then supplier and partner for companies in the NRW region, throughout Germany and in neighboring countries.