Construction products detail

Welded and soldered metal components

The construction products described here are metal components formed by welding or soldering metal parts together. The construction techniques described here are structural works or parts thereof which are assembled form these components, in some cases also by welding.

The verification can relate to the welding or soldering process itself (e.g. innovative or modified processes, special applications), but also to the suitability of the metallic materials for welding or soldering (e.g. special steels, special surface treatment). This work area also covers welding consumables.

Regulatory framework

For structural welded components made of steel or aluminium, there is a harmonised product standard, EN 1090‑1.

DIBt grants national technical approvals (abZ) for non-structural welded or soldered metal components, when the manufactured product

  • is not covered by a harmonised product standard,
  • deviates significantly from the Technical Building Rules (cf. MVV TB, Chapter C 2) or
  • when neither Technical Building Rules nor generally recognised technical rules exist for the product.

European Technical Assessments (ETAs) can also be issued for welded or soldered metal components that are not covered or not fully covered by a harmonised standard.

Furthermore, DIBt grants general construction technique permits for applications comprising welded and soldered metal components for which there are no conclusive technical rules regarding design and execution.

Please also refer to the relevant provisions of the federal states following the Model Administrative Provisions – Technical Building Rules (MVV TB).

The party executing the welding work is subject to special qualification requirements, cf. MVV TB Chapter A 1.

National procedure

A national technical approval (abZ) and/or oder general construction technique permit (aBG) is granted upon application (see Model Building Code (MBO), Sections 16a(2) and18(2) and (4)). This also applies to amendments and supplements to, or renewals of existing approvals and/or construction technique permits.

No formal requirements apply. The following information is needed: name and address of the applicant, description of the product and/or construction technique and its field of use or application, type of decision required (new decision, amendment or supplement to, or renewal of, an existing decision).

Please feel free to use the template 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.


new decision
valid until
Subject concerned Applicant Decision no. Validity
from / to
PFEIFER Fundamentanker PGS/G Pfeifer Seil- und Hebetechnik GmbH Dr.-Karl-Lenz-Str. 66 87700 Memmingen Z-30.6-15 Z: 23.07.2020
G: 23.07.2025
Schroeder RS-Schwerlastanker Friedrich Schroeder GmbH & Co. KG Hönnestraße 24 58809 Neuenrade Z-30.6-70 Z: 06.10.2021
G: 06.10.2026
PEIKKO® Muffenverbindung Typ Copra PEIKKO GROUP CORPORATION Voimakatu 3 15101 Lahti FINNLAND Z-30.6-72 Z: 14.06.2023
G: 14.06.2028
Geschweißte Bauteile aus Baustahl und deren Ermüdungsfestigkeitskennwerte Nordex Energy GmbH Langenhorner Chaussee 600 22419 Hamburg Z-30.6-73 Z: 17.06.2020
G: 17.06.2025
Stahlbauteile mit lastabtragenden Lötverbindungen Modesta Industriemontagen GmbH Eichenhof 14 14959 Trebbin OT Lüdersdorf Z-30.6-76 Z: 08.04.2020
G: 08.04.2025
Konstruktionsdetails mit spezifischen Kerbfallkategorien in Stahltürmen ENERCON GmbH Dreekamp 5 26605 Aurich Z-30.6-78 Z: 23.02.2023
G: 21.12.2026