The active drawing revision
Issue a drawing list with document number, revision, date, and file reference, including supporting specifications. State which earlier revisions are superseded and ask the supplier to acknowledge the set received. The quotation should cite the same revision so later changes can be assessed against a known starting point.
Finished-part dimensions and supplied bar size
Distinguish supplied bar, rough blank, and finished component dimensions. Mark the features and notes included in the supplier's scope and identify those controlled by later operations. Recheck stock allowance, tolerances, and inspection requirements whenever a revision changes the finished envelope.
Mandatory drawing notes
Review material designation, thermal condition, hardness or mechanical properties, dimensions, texture, straightness, threads, chamfers, and inspection notes. Identify the controlling specification for each mandatory requirement and resolve conflicts with the purchase order in writing before manufacture.
Changes before order confirmation
For a change after quotation or production start, list the affected features and first applicable order, lot, or piece. Ask the supplier to report work already completed and the effect on stock, rework, tests, price, and delivery. Record whether existing material is accepted, reworked, segregated, or replaced, with the approving person and revision.
Quotation baseline
Issue a transmittal index with drawing identity, revision, date, file, and buyer-approved identifier, plus every supporting specification. Apply ISO 10007 configuration discipline and state precedence among the accepted order, drawing, product standard, and project documents under ISO 404 context.
Which revision controls the quote
| Status | Supplier action | Buyer review | Required record |
|---|---|---|---|
| Issued for quotation | Acknowledge complete indexed package and list questions | Confirm quotation baseline | Signed document register |
| Clarification proposed | State clause, assumption, effect, and requested disposition | Answer without changing baseline unless expressly revised | Numbered clarification log |
| Revision issued | Assess technical, timing, evidence, and work-in-progress impact | Approve implementation point or reject change | Change notice and impact response |
| Released for supply | Use only accepted revision and close superseded copies | Verify reports and marks cite correct baseline | Final configuration-status record |
Manufacture, inspection, and release against one revision
Record which revision governed manufacture, treatment, machining, inspection, marking, and packing, plus the first affected heat, lot, piece, or work order. Reconcile reports and deviations to that baseline; retain superseded files but prevent production use.
RFQ example
Item: Alloy steel bars or blanks, [grade], [standard / edition], [quantity]
Controlling drawing: [number], revision [x], issued [date]; final geometry, tolerances, surface, machining allowance, and special notes apply as identified
RFQ baseline: Supplier shall acknowledge transmittal [number] listing drawing, product specification, inspection plan, packing specification, and buyer templates with exact revisions
Hierarchy: Conflicts shall be reported before pricing; no supplier assumption changes the hierarchy stated in the accepted order
Quotation: List every deviation, exclusion, missing input, and alternative against the affected clause or drawing note
Change notice: State old/new revision, affected PO item, technical and commercial impact, work-in-progress status, proposed implementation heat or lot, reinspection, and document updates
Approval: No drawing, grade, process, site, or inspection change is effective without written disposition from [authorised buyer role]
Evidence: ISO 10474 document type [state], inspection reports, marks, and release dossier shall cite the accepted drawing revision and affected heat or lot
Closeout: Submit final configuration-status record and deviation log; superseded files must remain identifiable and controlled from production useQuestions buyers ask
What drawing details should buyers send for a steel bar RFQ?
Buyers should send drawing number, revision, material grade, final part size, rough bar size if known, tolerance, machining allowance, surface requirement, delivery condition, inspection notes, and destination details.
Why does drawing revision control matter for steel bars?
Drawing revision control matters because grade, size, tolerance, surface finish, heat treatment, inspection, and packing notes can change. Using the wrong revision can create quotation and shipment document problems.
Should the drawing or purchase order control the requirement?
State which document controls each requirement. If the drawing, purchase order, and specification differ, resolve the conflict before order confirmation.
RFQ checklist
- Drawing number, revision, issue date, and latest controlled version
- Final part diameter, rough bar diameter, length, quantity, and machining allowance
- Material grade, controlling standard, and acceptable equivalent names
- Delivery condition, heat treatment, hardness, and mechanical-property notes
- Tolerance, surface finish, straightness, chamfering, threading, or machining notes
- Inspection notes, report expectations, and third-party inspection requirements
- MTC, traceability, marking, packing, and shipment document requirements
- Confirmation process if the drawing changes after quotation
- Issue a transmittal index with file names, drawing revisions, dates, and approved identifiers.
- State the precedence of the order, drawing, product standard, specifications, and clarifications.
- Obtain supplier acknowledgement of every quotation-baseline document and missing input.
- Require deviations and assumptions against exact clauses or drawing notes.
- Define who may issue, assess, approve, and implement a revision or clarification.
- Record work-in-progress impact and the first affected heat, lot, piece, or work order.
- Reconcile inspection reports, certificates, marks, and release records to the accepted revision.
- Control superseded files from production use while retaining an auditable history.
References
Inquiry support
Want us to review the RFQ before quotation?
Send the drawing or RFQ with the grade, size, condition, processing, inspection, quantity, and destination. We can flag open points before quotation.