Worauf Sie bei Zertifikaten (EN 1090 EXC3, ISO 3834), Fertigungskapazitäten und Referenzen achten müssen.
Selecting the right prefabricated steel building manufacturer is the most critical risk-mitigation step in commercial construction. Non-compliant structural steel or uncertified welding can result in building permit rejections, structural failure, and invalidation of decennial building insurance. European developers must verify five core competencies: 1) EN 1090-1 / EN 1090-2 Execution Class EXC2 or EXC3 certification by an accredited European Notified Body, 2) Complete raw material traceability via EN 10204 3.1 Mill Test Certificates for S355JR and S350GD steel, 3) In-house 3D Tekla BIM engineering and FEA calculation capabilities, 4) Automated CNC machinery (plasma coping, robotic welding, automated roll-forming), and 5) A proven international export track record with documented European reference projects.
Before signing a manufacturing contract with any structural steel fabricator, developers and general contractors must audit the following five technical pillars:
The matrix below compares the four major supplier archetypes in the European structural steel market:
| Manufacturer Archetype | Certifications & QA | CNC Technology Level | Price Level Index | Risk Level & Fit |
|---|---|---|---|---|
| Tier-1 Certified Industrial Exporter (SerBuild) | EN 1090-2 EXC3, ISO 3834-2, CE, 3.1 MTR | Automated CNC lines + Robotic welding | Competitive (100% Base) | Lowest Risk: Ideal for industrial, logistics & commercial |
| Local Western European Workshop | EN 1090-2 EXC2/3, ISO 9001 | Semi-automated / Manual fabrication | High (+35% to +60%) | Low Risk, but high cost and long lead times (8–16 wks) |
| Low-Cost Uncertified Small Fabricator | Self-declared or None (No CE) | Manual cutting & hand welding | Low (-15% to -25%) | High Risk: Permit rejection, bolt misalignment, structural failure |
| Far-East Broker / Trader | Variable (3rd-party mill testing needed) | Variable factory sourcing | Low (-20% to -35%) | High Risk: Long transit (12–18 wks), customs tariffs, CBAM penalties |
| Audit Checklist Item | What to Request from Supplier | Acceptance Benchmark | Red Flag Indicator |
|---|---|---|---|
| CE & EN 1090 Certificate | Copy of Notified Body certificate | EN 1090-1 EXC2 or EXC3 valid accreditation | Expired certificate, self-declaration without Notified Body number |
| Raw Material Quality | EN 10204 Type 3.1 Mill Test Certificates | Heat numbers matched to steel members; yield ≥ 355 MPa | Generic 2.2 test report without specific heat number tracking |
| Welding Quality | ISO 3834-2 certificate & Welder WPQR | Qualified welding coordinators & certified NDT reports | Hand-welded connections without NDT inspection logs |
| Engineering Dossier | Sample calculation report & 3D Tekla IFC | Eurocode 1/3/8 calculations with national annexes | 2D hand sketches without 3D structural connection analysis |
| Commercial Security | Milestone payment structure | Advance -> CNC Progress -> Delivery milestone | 100% upfront payment demanded prior to engineering release |
Demand current certificates with Notified Body audit verification.
Confirm the engineering team can output IFC models and Eurocode calculations.
Verify raw steel comes from certified primary blast-furnace mills.
Audit CNC drilling lines, robotic welding stations, and shot-blasting bays.
Contact existing clients or inspect completed steel buildings in your region.
Establish progress milestones tied to engineering, fabrication, and shipping.
Senden Sie uns Maße, Spannweiten und Standortkoordinaten. Unsere Statikabteilung erstellt innerhalb von 24–48 Stunden eine detaillierte Kostenschätzung und eine Eurocode-Bewertung.
Detaillierte Antworten zu Eurocode-Statik, Fertigung, Export und Montage vor Ort.
Under the European Construction Products Regulation (CPR 305/2011), all structural steel components permanently incorporated into buildings must carry a CE mark under EN 1090-1. Installing non-certified steel is illegal in the EU and leads to immediate building shutdown by municipal authorities.
EXC2 is the standard execution class for general commercial and agricultural buildings. EXC3 is a much more rigorous quality standard required for buildings with dynamic fatigue loads (such as overhead cranes), public event arenas, multi-storey structures, and high-seismic hazard zones.
Every structural steel beam is hard-stamped with a unique heat number from the steel mill. SerBuild delivers EN 10204 3.1 Mill Test Certificates corresponding to each heat number, proving chemical composition (C, Mn, Si, P, S) and mechanical yield strength (≥ 355 N/mm²).
Yes. We welcome clients to our modern manufacturing plant in Istanbul. We also offer live high-definition virtual audits where our technical directors walk you through the CNC lines, robotic welding cells, and active project fabrication.
SerBuild provides a 10-year comprehensive structural integrity warranty under EN 1090-2, a 15-to-25 year manufacturer warranty on PIR sandwich panel cladding coatings, and a 100% bolted fit guarantee.
Senden Sie uns Maße, Skizzen oder Ausschreibungsunterlagen für eine statische Vorprüfung und ein detailliertes Angebot.