Founder Technical & Procurement Review
Tariff & Scope Verified: 2026-11-02
Reviewed for technical terminology, Turkish factory field reality and published EUR scope boundaries (not statutory engineering sign-off).
Governing Norms
- EN 1090-1 / -2 (EXC2 & EXC3)
- ISO 3834-2
- EN 10204 3.1
- ISO 12944
Material Focus
S355JR / S355J2+N Hot-Rolled & Built-Up Plates + EN 14399 / 8.8 / 10.9 Bolts
Dimensional Priority
Haunch/Apex End-Plate Hole Pitch, Camber, Web Sweep & <=11.80m Length
Audit Sequence
SS-DESK (€190) -> SS-TECH (€790) -> SS-PRE (€490) + SS-LOAD
€390
Five Mandatory Quality Gates Before Structural Steel Leaves the Turkish Shop
| Quality Gate | What We Check on Site / in Dossier | High-Impact Failure Prevented |
|---|---|---|
| 1. Notified-Body Certificate Scope | EN 1090-1 FPC & ISO 3834-2 validity, legal entity match and EXC2 / EXC3 class ceiling |
Customs/building-control rejection due to expired or trader-borrowed CE certificate |
2. EN 10204 3.1 Heat Traceability |
Matching physical steel plate/beam heat numbers (S355J2) & impact energy (27J @ -20°C) to mill certs |
Undisclosed downgrade to S235JR or non-traceable stock plates |
| 3. Welding & NDT Records | WPS / WPQR, welder certs (ISO 9606-1), visual weld profile (EN ISO 5817) & third-party UT / MT / PT reports |
Brittle flange-to-end-plate weld cracking under snow or crane dynamic loads |
| 4. Splice & End-Plate Geometry | CNC drilled hole pitch, diagonal squareness, end-plate flatness (warping after welding) & piece hard-stamping | Rafters refusing to bolt together 12 meters in the air during mobile-crane erection |
5. Surface Prep & Coating (ISO 12944) |
Sa 2½ shot-blast roughness, stripe-coating on edges/welds & calibrated DFT micron readings (or EN ISO 1461 HDG) |
Premature rust bleeding within 6 months because primer was sprayed over unblasted mill scale |