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Core field area: İstanbul Anatolian & Kocaeli corridor · Outside corridor by agreed quote
SS-COMPARE · Quote Matrix SSR-2026-CMP-09 8 min read

3-Factory Steel & Prefab Quotation Comparison Matrix Sample Report

See why the "cheapest" Turkish proforma invoice is often 14–22% more expensive once missing anchor bolts, ridge flashings, coil grade downgrades and EXW loading charges are normalized under Quotation Comparison (SS-COMPARE €290).

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Founder Technical & Procurement Review Tariff & Scope Verified: 2026-11-02
Prepared by İdris YAĞMAHAN Architect
Reviewed by Celalettin YAĞMAHAN Civil Engineer

Reviewed for technical terminology, Turkish factory field reality and published EUR scope boundaries (not statutory engineering sign-off).

Active Corporate Specimen: SSR-2026-CMP-09 · 3-Factory Quote Matrix
Commission This Scope on WhatsApp
SerSourcing TECHNICAL SOURCING, FACTORY AUDIT & BUYING-OFFICE DIVISION
DOCUMENT CONTROL Page 1 / 2
Document Ref.
SSR-2026-CMP-09
Tariff / Scope
SS-COMPARE (€290 · Up to 3 Quotes / 10 Line Items)
Issue / Revision
Rev. 02 · 2026-11-02
Classification
SPECIMEN · NDA ANONYMIZED

APPLES-TO-APPLES TECHNICAL & COMMERCIAL QUOTATION MATRIX

Comparison Scope: 3 Turkish Proforma Offers for 1,200 m² Steel Warehouse Frame + 60 mm PIR Envelope Package

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

Commissioning Buyer Profile [REDACTED — Agricultural Cold-Chain & Storage Buyer, Romania]
Industrial Corridor & Travel Rule Remote Engineering Desk Normalization + 1 Written Clarification Round
Referenced Technical Standards Incoterms® 2020 FCA vs EXW · EN 1090 EXC2 · EN 14509 PIR B-s1,d0 · EN 14399 10.9
Verification Instruments & Basis Line-by-Line BOM Weight/Area Normalization, Scope-Exclusion Audit, True Landed FCA Baseline
Standard Tariff & Turnaround €290 (SS-COMPARE) · Delivered within 4 Business Days
3 Proformas Normalized Line-by-Line
€15,150 Hidden Exclusions Caught in Offer A
€124,400 True Compliant FCA Winner (Offer B)
€5,250 Saved Net Buyer Avoided Overrun
Executive Gate Recommendation: RANKING REVERSED AFTER NORMALIZATION — OFFER B IS TRUE LOWEST COMPLIANT BID

Headline proforma totals ranked Offer A lowest (€114,500 EXW) vs Offer B (€123,800 FCA) and Offer C (€128,400 FCA). However, 1-round clarification revealed Offer A excluded M24 anchor cages/10.9 bolts (+€4,900), ridge/corner flashings (+€3,400), export customs/loading (+€1,650), and quoted PUR instead of PIR B-s1,d0 (+€5,200 upgrade) = €129,650 true FCA equivalent. Offer B (€124,400 normalized FCA) is €5,250 lower on identical compliant specs.

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
CMP-01 Primary Portal Steel Tonnage & Grade 52.0 t S355JR, Sa 2½ blast + 160 µm epoxy/PU, EN 1090 EXC2 Offer A quoted 46.5 t S275JR (120 µm shop primer); Offer B: 52.2 t S355JR 160 µm; Offer C: 53.0 t S355JR. Document Reviewed Reject Offer A S275JR/primer shortcut unless upgraded to snow-load spec.
CMP-02 Anchor Bolt Cages & EN 14399 10.9 Fasteners Full foundation anchor bolts + templates + Class 10.9 HV splice sets Offer A fine print: "Foundation anchors & site bolts by buyer" (+€4,900 gap); Offer B & C: 100% included. Open / Hold Gate Add €4,900 adjustment to Offer A baseline; lock +5% spare bolts on Offer B.
CMP-03 Roof & Wall Sandwich Panels (1,980 m² Net) 60 mm PIR core (B-s1,d0), 0.50/0.45 mm RAL 9002/7016 + peel film Offer A quoted standard PUR B2 foam (+€2.60/m² = +€5,148 to upgrade to PIR); Offer B & C quoted certified PIR. Document Reviewed Mandate EN 13501-1 B-s1,d0 PIR fire certificate in Offer B contract.
CMP-04 Folded Ridge Caps, Gutter, Drip & Corner Flashings Complete 0.50 mm RAL-matched architectural trim & EPDM closures Offer A excluded trims ("quoted after final erection drawing" ~€3,400); Offer B included up to 620 lm; Offer C included. Open / Hold Gate Confirm exact linear-meter trim schedule in Offer B Annex 2.
CMP-05 Incoterms® 2020 Delivery, Crane Loading & Export Customs FCA Factory Loaded onto 4 × 13.6 m Mega-Trailers + Export Declaration/ATR Offer A: EXW un-loaded (+€1,650 crane, dunnage & export broker fee); Offer B & C: FCA Loaded incl. ATR. Document Reviewed Always contract Turkish steel/panels on FCA Loaded (never bare EXW).
CMP-06 Payment Milestone Structure & Delivery Lead Time <=30% advance, balance ONLY after clean SS-PRE inspection report Offer A demanded 50%/50% prior to inspection; Offer B accepted 30% deposit / 70% post-SS-PRE prior to truck seal (5 wks). Supplier-Stated Proceed to SS-VISIT (€490) or PK-VERIFY (€890) on Offer B before deposit.
Inspection & Sampling Basis

Scoped B2B visual field verification, random dimensional spot-sampling and documentary cross-check.

Metrology & Traceability

Field gauges zero-checked prior to measurement; heat/batch IDs cross-referenced against presented 3.1 MTCs.

Commercial Payment Gate Rule

Advance or balance wire release remains conditional upon closing all Open / Hold items logged on Sheet 2.

SerSourcing — Operated by CFY Mühendislik Mim. Dan. Yapı Malz. İnş. San. ve Tic. Ltd. Şti. · Maltepe, İstanbul SSR-2026-CMP-09 · Page 1 / 2
SerSourcing · CFY Mühendislik Mim. Dan. Yapı Malz. İnş. San. ve Tic. Ltd. Şti. CORPORATE ENGINEERING & PROCUREMENT DOSSIER — CONTINUATION SHEET
SSR-2026-CMP-09 Rev. 02 · 2026-11-02 Page 2 / 2

03 · CROSS-REFERENCED EVIDENCE & ANNEX REGISTER

XLS-A1 Logged in Dossier
Editable 3-Supplier Normalization Spreadsheet (.xlsx / PDF)

Full formula matrix equalizing tonnage, €/kg, panel €/m², trims, bolts and FCA logistics.

CLR-B2 Logged in Dossier
Written Clarification Q&A Log (Suppliers A, B & C)

Timestamped written supplier replies confirming previously silent exclusions.

INC-C3 Logged in Dossier
EXW vs. FCA Loaded Cost & Liability Breakdown

Itemized Turkish export declaration, ATR issuance and overhead crane loading split.

PAY-D4 Logged in Dossier
Recommended Purchase Order Clause & Inspection Gate Rider

Draft commercial clauses linking 70% balance transfer to SS-PRE & SS-LOAD sign-off.

04 · OPEN-ITEMS ACTION REGISTER BEFORE COMMERCIAL RELEASE

Item ID Open Technical / Commercial Point Action Owner Target Release Gate
OI-01 Commission Factory Visit (SS-VISIT €490) at Offer B facility before wiring the 30% advance. Buyer / SerSourcing Before PO Award
OI-02 Append explicit 620 lm flashing profile cross-section sheet to Offer B Proforma Invoice. Offer B Engineering Prior to Deposit
OI-03 Insert inspection access clause for SerSourcing Pre-shipment Check (SS-PRE) 5 days prior to truck booking. Buyer Legal / Purchasing In Purchase Order

05 · EVIDENCE CLASSIFICATION KEY & CORPORATE SCOPE GOVERNANCE

Observed / Verified

Directly witnessed, counted or measured on site/desk by SerSourcing within the agreed assignment window.

Document Reviewed

Recorded from supplier-submitted certificates, MTCs or drawings without assuming physical lot testing.

Supplier-Stated

Verbal or written manufacturer statement recorded transparently; requires independent verification.

Open / Hold Gate

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%).

Prepared By (Field / Desk Lead) Celalettin YAĞMAHAN Civil Engineer · Co-Founder
Maltepe, İstanbul · 2026-11-02
Technical Quality Review By İdris YAĞMAHAN Architect · Co-Founder
QA Control · SSR-2026-CMP-09
Corporate Verification Seal
Tariff SS-2026-11-V2 · MERSİS: 0209128951200001 · Tax ID: 2091289512 · sersourcing.com SSR-2026-CMP-09 · Page 2 / 2

Why Raw Proforma Totals Mislead International Steel & Prefab Buyers

Comparing three Turkish factory proformas by looking only at the bottom-right EUR figure is the #1 cause of mid-project budget blowouts. One supplier quotes S275 shop-primed steel EXW without anchor bolts or flashings; the second quotes full S355JR 160 µm epoxy/PU FCA with PIR panels and 10.9 bolt kegs.

For a flat €290 (SS-COMPARE), our architect-and-engineer desk normalizes up to 3 quotations across 10 comparable line items, runs 1 written clarification round with the factories, and hands you both a corporate PDF dossier and an editable comparison table.

  • Equalizes unit metrics (€/ton net structural steel, €/m² effective cover width on panels, €/m² nominal board area).
  • Surfaces silent exclusions (10.9 fasteners, foundation anchor templates, ridge/corner flashings, ISPM-15 crates, EXW crane/customs charges).
  • Restructures risky 50% / 50% blind payment terms into inspection-gated milestones.
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Clear Boundaries & Scope Answers

Frequently Asked Questions

Yes. SS-COMPARE delivers both the structured corporate summary PDF and an editable line-item comparison table so your finance and project management team can test freight or quantity scenarios.

Fixed EUR Schedule · Free Initial Scope Review

Move your Türkiye purchase forward with a defined scope

Share your product specification, drawing or Turkish supplier details to receive a clear written scope and EUR fee confirmation before work starts.

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