Type 3.1 · Certification
A type 3.1 certificate is issued by the manufacturer's inspection representative, independent of the manufacturing department, and reports actual test results for the delivered material.
Steel products
Source: BS EN 10204
§ Standards
Status
CURRENT
Edition
2004
Last verified
2026-09-06
BSI · STANDARD
BS
EN 10204
Metallic products — Types of inspection documents
§ 01
Overview
What this standard covers
Defines the certificate types: 2.1 and 2.2 as non-specific declarations, 3.1 issued by the manufacturer's independent inspection function, and 3.2 countersigned by an independent party.
The form and validity of inspection documents supplied with metallic products, and who is entitled to issue each type.
Who uses it
Buyers, quality engineers and auditors checking what documentation must accompany the steel.
§ 02
Details
Reference data
- Standard number
- BS EN 10204
- Title
- Metallic products — Types of inspection documents
- Organisation
- BSI
- Country
- United Kingdom
- Region
- United Kingdom
- Subject
- Material certificates
- Subcategory
- Certificates
- Type
- STANDARD
- Application
- Contractual
- Availability
- Paid
- Current edition
- 2004
- Publication year
- 2004
- Status
- CURRENT
- Roles
- certification standard
- Last verified
- 2026-09-06
Official source: knowledge.bsigroup.com
§ 03
Requirements
Key requirements
Type 3.2 · Certification
A type 3.2 certificate is countersigned by an independent inspection representative appointed by the purchaser or by official regulation, giving a second layer of verification.
Steel products
Source: BS EN 10204
§ 04
Related
Standards used alongside this one
- BS EN 1090-2
Execution of steel structures — Technical requirements for steel structures
The central execution standard for UK and European steelwork: execution classes EXC1 to EXC4, constituent products, cutting and holing, welding, bolting, erection and geometrical tolerances.
United KingdomFabricationCURRENTPaid
- ISO 10474
Steel and steel products — Inspection documents
The international counterpart to EN 10204, defining inspection document types for steel products.
InternationalMaterial certificatesCURRENTPaid
- EN 10204
Metallic products — Types of inspection documents
The European certificate types, of which 3.1 is the normal requirement for structural steel supplied into EN 1090-2 work.
European UnionMaterial certificatesCURRENTPaid
Sourcing, review and use
Status
Editorial reference information compiled and maintained by the StructuralSteel.ai team. It is not a design certificate and is not issued under an engineer's seal.
Last reviewed
Calculations
Any figures produced on this page are indicative estimates for early sizing and comparison only — they are not engineered design outputs.
References
Final member selection, loading, connection design, fire design, fabrication and compliance must be verified for your specific project by a suitably qualified structural engineer. Standards are revised; check the edition in force where the work is built.
Verification
StructuralSteel.ai provides technical reference information and links to authoritative sources. Project specifications, applicable legislation, current standards editions and requirements of the responsible engineer or authority should always be verified before fabrication or supply.