Reviewed for technical terminology, Turkish factory field reality and published EUR scope boundaries (not statutory engineering sign-off).
1. Why informal enquiries create false price gaps
International buyers often begin a Türkiye sourcing search by forwarding a product photograph, a contractor’s bill-of-quantities line or a competitor’s brochure code. While those items help start an exploratory conversation, they rarely contain enough definition for two factories to calculate cost on the same basis. In building materials and fabricated steel, small unstated assumptions regularly shift manufacturing cost by double-digit percentages.
Consider cold-formed galvanised profiles or drywall framing studs: if your enquiry states section height and nominal thickness without clarifying whether thickness refers to base steel or coated thickness, or whether zinc mass is Z100, Z140 or Z275, cautious manufacturers will price the heavier specification while aggressive bidders price the lightest stock coil on their floor. On paper, the second offer looks cheaper; in reality, the two companies are quoting different products.
A disciplined sourcing brief does not need to be a 100-page legal tender. Even a concise three-page brief with controlled line numbers, clear technical boundaries and an explicit column for supplier deviations transforms response quality. Suppliers who genuinely match the work recognise a serious buyer, while unsuitable traders or under-equipped workshops surface early.
2. Six information blocks every building-product brief should cover
Whether you are buying gypsum and fibre cement boards, punched structural channels, sandwich panels, stone wool insulation or aluminium architectural openings, organising your brief into six distinct blocks keeps engineering requirements separate from commercial terms. Mixing technical tolerances inside email prose makes it easy for sales teams to overlook critical notes when passing files to their estimation department.
Use numbered line items (ITEM-01, ITEM-02, etc.) across both your specification document and your pricing reply sheet. When a supplier answers using your exact item codes, missing accessories, unquoted trims and altered units become visible immediately during quotation comparison.
| Brief section | Exact details to state | What happens when omitted |
|---|---|---|
| 1. Application & exposure | Building zone, indoor/outdoor exposure, structural vs non-load-bearing role, mating system interfaces | Suppliers quote indoor-grade coatings or incompatible connection geometries |
| 2. Geometry & revision | Part code, drawing number, revision date, length/width/thickness, hole pitch and dimensional tolerances | Estimators price superseded drawings or ignore tight punching tolerances |
| 3. Material & finish | Base grade (e.g. S350GD, EN 520 type, core density), coating class, RAL colour, gloss and visible-face rules | Silent grade substitutions and unpriced surface-treatment steps |
| 4. Quantity & call-off | Order quantity, measurement unit (m², lm, pcs, kg), batch split, repeat potential without false volume promises | Unclear MOQ surcharges, unamortised tooling fees or unrealistic lead times |
| 5. Packing & handling | Max pallet/bundle kg, crane vs side-forklift unloading, timber bearers, moisture wrap, label fields | Crushed edges in transit or bundles too heavy for site unloading gear |
| 6. Documents & delivery | Target Incoterms® delivery point, destination country, required datasheets, batch/test records and currency | EXW works quotes mixed with FCA/DAP assumptions and missing export paperwork |
3. Separate non-negotiable requirements from open choices
Not every detail is frozen when sourcing starts. A distributor building a private-label board range may welcome standard Turkish sheet lengths (2,400 mm, 2,500 mm, 2,700 mm or 3,000 mm) so long as edge geometry and pallet protection meet warehouse rules. By contrast, a modular building manufacturer ordering pre-punched chassis members cannot accept a changed web height or shifted bolt-hole pattern without redesigning its entire jig.
Mark each technical parameter as either Essential (Mandatory) or Open / Alternative Permitted. Where an alternative is permitted, instruct suppliers to state the exact offered value rather than writing “as per request”. If a supplier cannot meet an essential parameter but wishes to propose a closest standard option, ask them to submit it on a separate clearly marked deviation line so your project architect or engineer can evaluate whether the change is acceptable.
This separation also protects your schedule. When every single preference is presented as rigid and non-negotiable, capable Turkish producers whose standard coil width or pallet count differs slightly may decline to quote at all, unnecessarily shrinking your candidate pool.
4. Managing drawings, BOQ schedules and confidentiality
Before distributing project files, audit the package for consistency. Architectural general-arrangement drawings frequently show full building floorplans, client title blocks and unrelated trades that a profile roll-former or door manufacturer neither needs nor wants to wade through. Extracting relevant detail sheets, fabrication views and schedules reduces estimation errors and limits unnecessary disclosure of sensitive project identity.
Check that every PDF drawing matches the revision listed on your Excel schedule. One of the most common causes of defective first-article runs is sending a revised bill of quantities alongside an older CAD export that still carries previous hole centres or glazing-bead depths. Assign a single brief reference and date to the outgoing package.
Only share files you are authorised to disclose. If your product involves proprietary modular connections, custom extrusion dies or client-restricted tender documents, start the discussion with a high-level non-confidential summary—stating material family, approximate dimensions, tonnage and destination—and arrange confidentiality terms before releasing fabrication drawings.
- Remove unrelated architectural sheets so estimators focus strictly on the items being quoted.
- Verify that every drawing number and revision code matches the numbered schedule line.
- Include both editable item tables (for pricing) and locked PDF views (for geometry control).
- State clearly if tooling ownership, custom dies or non-disclosure terms must be agreed first.
5. Commercial, packaging and logistics assumptions to state up front
Unit ex-works factory prices never tell the full landed story unless packaging and handover rules are defined. Export road trailers departing Türkiye for Balkan or EU destinations impose different stacking, strapping and axle-weight realities than 20-foot or 40-foot sea containers loaded at Ambarlı, Gebze/Dilovası or Mersin ports. Heavy stone wool or board pallets stacked without timber bearers or corner protectors can suffer damaged edges long before arrival.
Ask every candidate supplier to confirm five commercial points in their initial offer: (1) quotation currency and validity period, (2) exact delivery basis and handover location (noting city and district, since a company’s sales office in central İstanbul may ship from a plant in Kocaeli, Sakarya or Tekirdağ), (3) whether export pallets, fumigated/ISPM-15 timber, shrink-wrapping and steel strapping are included or extra, (4) estimated production lead time after drawing/sample sign-off and deposit, and (5) proposed payment stages.
6. When to prepare the brief internally vs using SS-BRIEF or SS-SOURCE
If your team already has a clean item schedule, controlled drawings and clear acceptance criteria, you can move straight to Supplier Shortlist (SS-SOURCE, €690)—covering one product family (up to 10 line items), researching up to five Turkish candidates, running one structured RFQ round and targeting up to three suitable options.
When your raw material consists of mixed site schedules, ungrouped architectural drawings or multi-page specifications that first need translation into a clean purchasing package, Technical RFQ Brief (SS-BRIEF, €390) organises one product family (up to 20 line items / 50 source pages, including one revision) into a structured RFQ brief and supplier-question checklist. Your project architect or engineer retains design authority while suppliers receive an unambiguous enquiry package.