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Product certifcation / testings and monitorings

Until today, there have been no harmonised European standards for many construction products, not for structural steel engineering or metal construction either. In this case, products are certified, monitored and/or tested on the basis of the building regulations of the federal states (Federal State Building Regulations) of the Federal Republic of Germany.

For the respective activities as testing, monitoring and certification body according to the Regional  Building Regulations, the GSI mbH NL SLV Munich is designated with the identification number BAY23 for the construction products in table 1 and 2.

Table 1: regulated construction products according to construction regulation list A part 1 – edition 2014/1

Regulated construction products according to Building Regulations List A Part 1 - Edition 2014/1

North Rhine Westphalia (BauO NRW) Consecutive No. Building product technical rules certificate of conformity recognition accoridng to construction    
4.1.13 bright steel DIN EN 10278: 1999-12 In addition: DIN EN 10277-2: 2008-06 and Annexes 4.1 and 4.2 ÜHP inspection body    
4.1.27 Hot rolled seamless steel tubes of unalloyed steels for use in tank construction DIN 1629: 1984-10 In addition: Appendices 4.2 4.11 and 4.43 ÜHP inspection body    
4.1.29 Cold rolled strip and sheet DIN 1623: 2009-05 Additionally applies: Annex 4.2 ÜHP inspection body    
4.1.37 Wire ropes made of steel wires DIN 3051-4: 1972-03 In addition: Annex 4.2 ÜHP inspection body    
4.1.45 cold-formed sheet piles made of unalloyed steels DIN EN 10249-1: 1995-08 Additionally applies: Annexes 4.2 and 4.43 ÜHP testing laboratory    
4.2.1 Forgings made of steel DIN EN 10222-4: 2001-12 DIN EN 10250-2: 1999-12 In addition: Appendices 4.2 and 4.10 ÜHP inspection body    
4.3.1 cast steel products DIN EN 10293: 2005-06 DIN 18800-1: 2008-11 In addition: Annex 4.2 ÜHP Prüfstelle    
4.4.1 Products made of tempered steels1 DIN EN 10083-2: 2006-10 DIN EN 10083-3: 2007-01 DIN EN 10083-3 / Ber. 1: 2009-01 Additionally: Annexes 4.2 and 4.5 ÜHP inspection body    
4.5.1 Forgings made of stainless steels for use in tanks and steel chimneys DIN EN 10250-4: 2000-02 DIN EN 10250-4: Ber. 1: 2008-12 In addition: Appendices 4.2 and 4.6 ÜZ monitoring body    
4.5.3 Flat bars Rods and wires for use with steel chimneys SEW 400 7th Edition (1997-02) In addition: Appendices 4.2 and 4.20 ÜZ supervising office    
4.5.4 Welded circular stainless steel tubes for use with steel chimneys DIN EN 10296-2: 2006-02 In addition: DIN 18800-7: 2008-11 and Appendices 4.2 4.6 4.43 and 4.51 ÜZ monitoring body    
4.5.5 Seamless circular stainless steel tubes for use with steel chimneys DIN EN 10297-2: 2006-02 In addition: Appendices 4.2 4.6 and 4.43 ÜZ monitoring body    
4.5.6 Hot-rolled and cold-rolled sheet and strip of corrosion-resistant steels for use in tanks and steel chimneys DIN EN 10088-2: 2005-09 In addition: Appendices 4.2 and 4.6 ÜZ monitoring body    
4.5.7 Semi-finished products Rods Wire rod drawn wire Profiles and bright steel products made of corrosion-resistant steels for use in tanks and steel chimneys DIN EN 10088-3: 2005-09 In addition: Appendices 4.2 and 4.6 ÜZ monitoring body    
4.8.14 Semi-circular rivets made of steel with diameters ≥ 10 mm DIN 124: 2011-03 In addition appendix 4.38 ÜZ inspection body  
4.8.15 Countersunk rivets made of steel DIN 302: 2011-03 In addition: Annex 4.38 ÜZ inspection body    
4.8.16 Semi-circular rivets made of aluminum DIN 660: 2012-01 In addition appendix 4.38 ÜZ supervising body  
4.8.17 Studs and pins for arc stud welding DIN EN ISO 13918: 2008-10 In addition: Appendix 4.29 ÜHP inspection body    
16.2 System independent steel pipes for use in supporting and working scaffolding DIN EN 39: 2001-11 In addition: Annex 16.2 ÜHP inspection body    
16.7 Welded circular tubes made of unalloyed steels for use with scaffolds DIN 1626: 1984-10 Additionally applies: Appendices 4.2 4.43 16.2 and 16.5 ÜHP testing laboratory    

Construction products with general building inspectorate approval

Ser. No. Approval Group Associates Name of Certificate of Conformity BauO BAY Recognition  
4.1 / 1 Z-30.1- ...
Z-30.2- ...
fine grain TS monitoring point  
4.1 / 2 Z-30.3- ... Stainless steels ÜZ Monitoring body certification body  

Whether the GSI mbH NL SLV München is to be involved as testing, inspection or certification body depends on the certificate of conformity prescribed in Building Regulations List A or in the relevant proof of usability (general building inspectorate approval, general building inspectorate test certificate, approval in individual cases) from.


The content of the activity of the GSI mbH NL SLV Munich for the respective task results from the technical rules as well as the state building regulations BAY § 23.

No. 3 for the certification body (Z),
No. 4 for the third-party surveillance body (Ü) and
No 2 for the testing laboratory for the verification of construction products before confirmation of conformity (P)


Applications for testing, monitoring and / or certification can be found here.

Contact person

SLV München