- Document Ref.
SSR-2026-LGSF-01- Tariff / Scope
- SS-VISIT (€490) · Optional SS-TECH (€790)
- Issue / Revision
- Rev. 02 · 2026-11-02
- Classification
- SPECIMEN · NDA ANONYMIZED
SCOPED FACTORY CAPABILITY & COIL TRACEABILITY AUDIT DOSSIER
Product Scope: Cold-Formed Light-Gauge Steel Villa Framing Kit (C89 / C140 Structural Studs & Trusses — 4 Villa Units)
ILLUSTRATIVE CORPORATE SPECIMEN (ZERO CLIENT DATA DISCLOSED): Client names, factory identities, heat/certificate numbers and commercial figures in this specimen are fictionalized to protect strict B2B NDA confidentiality. Scoped commercial/visual engineering record — not an accredited laboratory test certificate or statutory structural sign-off.
01 · ASSIGNMENT REGISTER & EXECUTIVE GATE SUMMARY
Active CNC roll-forming lines (C89 & C140) and in-house Vertex/FrameCAD detailing station were directly observed on site. However, floor coil stock included both S350GD+Z275 and commercial DX51D+Z100 coils; Purchase Order release should require heat-number reservation for S350GD+Z275 and written confirmation of hot-dip galvanized 8.8/10.9 anchor kits.
02 · SCOPED TECHNICAL OBSERVATIONS, MEASUREMENTS & COMPARISON MATRIX
| Ref. | Subsystem / Inspection Parameter | Buyer Specification / Benchmark | Recorded Field / Desk Evidence | Evidence Basis | Required Buyer / Supplier Gate Action |
|---|---|---|---|---|---|
CHK-01 |
CNC Roll-Forming Line & Tooling Ownership | In-house C89 & C140 multi-web roll-former; zero undisclosed broker sub-contracting | 2 active CNC roll-forming lines observed running C140 studs; machine serial plates match legal entity. | Observed / Verified | Acceptable for framing fabrication; record line allocation in PO. |
CHK-02 |
Structural Galvanized Coil Grade & Zinc Mass | EN 10346 S350GD + Z275 (min. 275 g/m² total zinc both sides) | 3 slit coils on decoiler tagged S350GD+Z275 (Heat #K-4418); adjacent rack held DX51D+Z100 coils for drywall. | Observed / Verified | Mandate Coil Heat # linkage on packing tags prior to cutting. |
CHK-03 |
Base Metal Thickness (BMT) vs. Total Coated Gauge | 1.20 mm net BMT (±0.05 mm) on load-bearing wall studs | 12-point caliper check across C140 sample run read 1.22–1.24 mm coated (~1.18 mm net BMT). | Observed / Verified | Within commercial sheet tolerance; repeat spot check at SS-PRE. |
CHK-04 |
CNC Web Service Holes, Dimples & Inkjet Coding | Clean swaged dimples, lip punch & readable member ID per erection drawing | Inkjet profile IDs crisp and legible; minor burr noted on 38 mm MEP service punch die. | Observed / Verified | Request punch die dressing + protective grommets in accessory kit. |
CHK-05 |
EN 10204 3.1 Mill Test Certificate Traceability | Mill certificate matching S350GD yield (>=350 MPa) and Z275 coating | Sample EN 10204 3.1 PDF reviewed for Heat #K-4418 (ReH 378 MPa, Z282 g/m²); order-specific coil not yet allocated. | Document Reviewed | Require order-specific 3.1 MTC submission before 2nd stage payment. |
CHK-06 |
Shear-Wall Hold-Down Brackets & Fastener Package | HDG hold-down brackets, EPDM sill tape & self-drilling screws included | Sales manager verbally stated hold-downs are outsourced to a Gebze laser-cut shop; drawings not shown. | Open / Hold Gate | Hold deposit until sub-supplier bracket drawing & HDG spec are attached to PI. |
Scoped B2B visual field verification, random dimensional spot-sampling and documentary cross-check.
Field gauges zero-checked prior to measurement; heat/batch IDs cross-referenced against presented 3.1 MTCs.
Advance or balance wire release remains conditional upon closing all Open / Hold items logged on Sheet 2.
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SSR-2026-LGSF-01
Rev. 02 · 2026-11-02
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03 · CROSS-REFERENCED EVIDENCE & ANNEX REGISTER
PHOTO-A1
Logged in Dossier
Timestamped bay overview, profile inkjet coding close-up and decoiler coil tags.
MTC-B2
Logged in Dossier
Cross-checked chemical/yield table for Heat #K-4418 vs. EN 10346 S350GD+Z275.
MEAS-C3
Logged in Dossier
Flange width (41.2 mm), web depth (140.1 mm), lip return (12.1 mm) and coated gauge log.
CORP-D4
Logged in Dossier
Confirmed operating manufacturer status matching proforma invoice issuer.
04 · OPEN-ITEMS ACTION REGISTER BEFORE COMMERCIAL RELEASE
| Item ID | Open Technical / Commercial Point | Action Owner | Target Release Gate |
|---|---|---|---|
OI-01 |
Written Proforma clause locking EN 10346 S350GD+Z275 net 1.20 mm BMT (excluding DX51D substitution). | Supplier / Buyer | Before Advance Payment |
OI-02 |
Detailed BOM & shop drawing for outsourced shear-wall hold-down anchors and screw coating class. | Supplier | Before Production Release |
OI-03 |
Book Pre-shipment Check (SS-PRE €490) on bundled villa pallets before 40' HC container stuffing. | Buyer / SerSourcing | At 90% Fabrication |
05 · EVIDENCE CLASSIFICATION KEY & CORPORATE SCOPE GOVERNANCE
Directly witnessed, counted or measured on site/desk by SerSourcing within the agreed assignment window.
Recorded from supplier-submitted certificates, MTCs or drawings without assuming physical lot testing.
Verbal or written manufacturer statement recorded transparently; requires independent verification.
Unresolved technical or commercial hold item recommended for closure prior to stage payment/dispatch.
Governance & Independence Standard: Issued under buyer-representation tariff SS-2026-11-V2. Zero undisclosed supplier commission. Goods contracts, product warranties, accredited EN ISO/IEC 17025 lab testing and statutory engineering sign-off remain with the respective contracting parties and appointed specialists.
06 · DOCUMENT REVISION LOG & CONTROLLED DISTRIBUTION REGISTER
| Rev. | Date | Revision Status & QA Milestone | Authorized Distribution & Archive Retention |
|---|---|---|---|
Rev. 01 |
2026-10-30 | Initial field / desk observation log, dimensional check sheet & annex index. | Internal Engineering Desk QA Review (Maltepe HQ) |
Rev. 02 |
2026-11-02 | QA-verified corporate engineering dossier & executive gate recommendation. | Commissioning Buyer (1× Encrypted PDF + Annex ZIP) · 5-Yr NDA Archive |
07 · BUYER CONTRACT, PAYMENT & DISPATCH SAFEGUARD PROTOCOL
GATE-01
Proforma & Technical Specification Rider
Bind verified steel grade, coating mass, tolerances and export packing rules directly into the signed Proforma Invoice.
GATE-02
Lot-Specific Certificate & Export Pack
Verify batch-allocated EN 10204 3.1 MTC, CE DoP, packing list and draft A.TR/EUR.1 48h prior to balance wire.
GATE-03
Pre-Shipment & Loading Gate Witness
Confirm final piece count and dunnage via SS-PRE (€490) or SS-LOAD (€390) before high-security bolt seal closure.
GATE-04
Strict NDA & Zero-Commission Mandate
Issued exclusively for commissioning buyer internal governance; SerSourcing accepts zero supplier commission (0%).
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