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Reinforcing steel bars (rebars)

Reinforcing steel bars, or rebars for short, are reinforcing steel in the form of straight bars used to reinforce concrete members.

The approval area only concerns rebars which deviate significantly from DIN 488, e.g., in terms of rib geometry, strength or diameter.

Regulatory framework

DIBt grants national technical approvals (abZ) for products

  • that deviate significantly from the Technical Building Rules (cf., in particular, MVV TB, Part C 2.1.3.1) or
  • for which neither Technical Building Rules nor generally recognised technical rules exist.

European Technical Assessments (ETAs) can also be issued upon request.

Info und tech. Hinweise

pdf-Datei Liste der Werkkennzeichen (WKZ) (9 pages ) Stand: 28.01.2026 pdf-Datei Liste der Verarbeiterkennzeichen (VKZ) (30 pages ) Stand: 28.01.2026 pdf-Datei Betonstahlverzeichnisse (164 pages ) Stand: 29. November 2023; Das Betonstahlverzeichnis wurde durch die Listen VKZ und WKZ ersetzt.

National procedure

To prepare an abZ/aBG for your construction product, we need an application from you. We recommend that you contact us prior to doing so. Feel free to send us your enquiry informally via email to dibt(at)dibt(.)de or to the competent technical contact listed in the top right.

For a first assessment, please send us the following information:

  • Description of the construction product and its intended field of use
    • e.g. material, configuration, number of sizes, variants, dimensions
    • e.g. use in walls, ceilings, interior construction, building services
  • Description of the construction technique and its field of application
    • e.g. design of walls, ceilings, elements, etc., and interaction of components
    • e.g. application in foundation engineering, reinforced concrete construction, building insulation; as load-bearing or non-load-bearing component; under static and quasi-static loading; fire exposure; other environmental exposures
  • Information regarding impact on regulatory concerns
    • in particular structural integrity, fire protection, health and environment protection, sound insulation as well as thermal performance
  • Explanation of need for an abZ/aBG
  • Contact details
    • preferably email address and/or telephone number, as well as name, organisation/company, and postal address

We will then contact you to clarify the next steps.

If you already hold a DIBt approval and/or construction technique permit and wish to apply for an amendment, supplement, or renewal, please use the form provided below.

European Technical Assessment (ETA)

To start the ETA procedure, please submit the form below. We will then check if the prerequisites for issuing an ETA are met, i.e., in particular, if the product is not fully covered by an existing harmonised standard. If the prerequisites are met, we will check whether a European Assessment Document (EAD) covering the requested assessment scope already exists or still needs to be developed. If an EAD needs to be developed or amended, a complete technical file needs to be established before the procedure can begin.

abZ+aBG

Z
new decision
E
supplement
Ä
amendment
V
renewal
G
valid until
Subject concerned Applicant Decision no. Validity
from / to
Stabstahl mit Gewinderippen S 555/700 als Tragglied für die Geotechnik Nenndurchmesser: 57,5 und 63,5 mm Stahlwerk Annahütte Max Aicher GmbH & Co. KG 83404 Ainring - Hammerau Z-1.1-1 Z: 02.09.2022
G: 30.09.2027
Betonstabstahl mit Gewinderippen B500B Nenndurchmesser: 16, 20, 25, 28 und 32 mm Nová Hut' s.r.o. Vratimovská 689/117 719 00 OSTRAVA-KUNCICE TSCHECHISCHE REPUBLIK Z-1.1-167 Z: 13.11.2025
G: 31.05.2030
Stabstahl mit Gewinderippen GEWI-STAHL S 555/700 als Tragglied in der Geotechnik Nenndurchmesser: 57,5 und 63,5 mm Nová Hut' s.r.o. Vratimovská 689/117 719 00 OSTRAVA-KUNCICE TSCHECHISCHE REPUBLIK Z-1.1-198.1 Z: 13.11.2025
G: 30.04.2028
Warmgewalzter, gerippter Betonstabstahl B500B mit Sonderrippung und Sonderwalzzeichen Nenndurchmesser: 8, 10, 12, 14, 16, 20, 25, 28 und 32 mm Celsa "Huta Ostrowiec" Sp.zo.o. ul. Samsonowicza 2 27-400 OSTROWIEC SWIETOKRZYSKI POLEN Z-1.1-235 Z: 13.08.2025
G: 16.08.2027
Hochfester Bewehrungsstahl SAS 670/800 mit Gewinderippen Nenndurchmesser: 18 bis 43 mm Stahlwerk Annahütte Max Aicher GmbH & Co. KG 83404 Ainring - Hammerau Z-1.1-267 Z: 08.04.2021
G: 04.04.2026
Stahlbetonbauteile unter Verwendung des hochfesten Bewehrungssystems SAS 670/800 STAHLWERK ANNAHÜTTE Max-Aicher GmbH & Co. KG Max-Aicher-Allee 1+2 83404 Ainring - Hammerau Z-1.1-285 Z: 06.05.2024
G: 15.05.2029
Stahlbetonteile unter Verwendung des hochfesten Bewehrungssystems OTB 670 Nenndurchmesser 18 bis 75 mm LIBERTY OSTRAVA a.s. Vratimovská 689/117 719 00 OSTRAVA-KUNCICE TSCHECHISCHE REPUBLIK Z-1.1-305 Z: 26.06.2023
G: 26.06.2028
Betonstabstahl B500B mit Sonderrippung, Nenndurchmesser: 8.0 mm CMC Poland Sp. z o.o. Pilsudskiego 82 42 400 ZAWIERCIE POLEN Z-1.1-307 Z: 13.07.2023
G: 17.07.2028
Betonstabstahl B500B mit Sonderwalzzeichen Nenndurchmesser 8 bis 32 mm Algerian Qatari Steel Industrial Zone of BELLARA EL-MILIA/JIJEL - BP 629 ALGERIEN Z-1.1-311 Z: 07.07.2025
G: 07.07.2030
Betonstabstahl B500B mit Gewinderippen - SAS 500 Nenndurchmesser: 12 bis 50 mm Stahlwerk Annahütte Max Aicher GmbH & Co. KG Max-Aicher-Allee 1-2 83404 Ainring-Hammerau Z-1.1-58 Z: 19.12.2024
G: 01.01.2030
Betonstabstahl mit Gewinderippen OTB500 B500B Nenndurchmesser: 40 mm und 50 mm Nová Hut' s.r.o. Vratimovská 689/117 719 00 OSTRAVA-KUNCICE TSCHECHISCHE REPUBLIK Z-1.1-59 Z: 18.11.2025
G: 31.03.2027