Start the first review with the drawing, part application, quantity plan, material direction, and known machining requirements
OEM RFQ Checklist | July 2026
What Quality Documents Should Be Discussed Before An OEM Casting Quote?
A useful casting RFQ does not need every document finalized on day one. It does need the buyer and foundry to identify which drawings, quality requirements, machining notes, and reporting expectations could change the process route, quotation, or delivery plan.
Published: July 14, 2026
Factory Visual
Separate What Is Needed To Start From What Must Be Agreed Before Production
For an early drawing review, a 2D drawing, application, quantity, and material direction are often enough to begin. Before tooling, trial orders, or repeat supply, the team should progressively align critical dimensions, machining datums, inspection scope, acceptance criteria, packing, and any buyer-specific document format.
Mark critical dimensions, datum areas, sealing surfaces, bores, and assembly features that may affect casting or machining decisions
State which inspection or report expectations are already fixed and which are still open for technical discussion
Treat material certificates, dimensional reports, hardness records, corrective-action formats, and PPAP-style requirements as project-specific items to confirm, not automatic promises
RFQ Focus
A Practical Document Checklist For The First RFQ
The point of this checklist is to make the first technical reply more useful. It helps the supplier ask focused questions and helps the buyer avoid receiving a price that ignores machining, quality, or delivery risk.
Drawing control: 2D drawing, 3D model if available, revision status, part name, and sample photos where useful
Application and material: operating condition, load, pressure, wear, temperature, corrosion, material grade or material direction
Machining definition: finished dimensions, critical datums, bores, threads, sealing faces, surface requirements, and tolerance notes
Inspection expectation: critical characteristics, material checks, dimensional-report needs, hardness or surface checks, and buyer-specific acceptance standards
Supply planning: trial quantity, repeat quantity, annual demand, required delivery date, packing, destination market, and NDA need if drawings are sensitive
Quick Facts
Help Buyers Judge Project Fit Faster
These summary blocks explain the suitable project type, review focus, and information buyers should prepare before RFQ.
Sourcing Focus
Practical guidance for real sourcing questions
Best RFQ Starting Point
Drawing, quantity, material direction, and machining notes
Project Handling
Drawing review, process discussion, inspection, and delivery coordination
Best Fit
Overseas OEM buyers, sourcing teams, and engineering reviewers
RFQ Focus
RFQ Package That Moves Review Faster
This section explains what to prepare for RFQ so Hongsen can review material direction, casting route, machining scope, and inspection requirements faster.
2D drawing, with 3D files if available
Part application, service condition, and destination market
Material grade or at least material direction
Quantity, annual demand, and trial-order expectation
Machining scope, critical tolerances, and inspection requirements
Buyer FAQ
Questions About Casting RFQ Quality Documents
These answers help purchasing and engineering teams prepare the first RFQ without confusing project-specific requirements with generic paperwork.
Can the first casting RFQ start before every inspection document is finalized?
Yes. Start with the drawing, application, quantity, material direction, critical dimensions, and known machining or inspection needs. The first review can identify which document and acceptance details need to be fixed before production.
Which quality requirements are most important to mark on the drawing?
Mark critical dimensions, datum areas, machining faces, sealing surfaces, bores, assembly features, material requirements, hardness if relevant, and any special inspection or report request.
Should buyers ask for material certificates, dimensional reports, 8D, or PPAP support in the first RFQ?
If the project requires them, mention them at the start. These are buyer-specific requirements that should be discussed and agreed for the actual program; they should not be assumed from a general casting quotation.
What changes between a trial order and repeat production?
The same drawing may need different focus at each stage. Trial orders often prioritize feasibility and critical risk checks, while repeat supply also needs aligned inspection records, packing, change control, and delivery rhythm.
Related Guides
Guides Related To This Sourcing Question
Buyers can continue reviewing related material, process, machining, and quality-control capabilities.
Related Capability Guide
Quality Control Before Quoting OEM Metal Castings
A practical OEM buyer guide explaining why casting quality control should be discussed before quotation, including design review, process control, machining, inspection, and repeat-batch feedback.
Related Capability Guide
Machined Castings After Casting For OEM Projects
A practical OEM buyer guide explaining why machining allowance, datum faces, sealing surfaces, bores, inspection points, and casting route review should be discussed before quoting machined castings.
Related Capability Guide
What Files Are Needed For A Casting RFQ
Practical RFQ preparation guide covering drawings, 3D files, material direction, quantity, machining notes, inspection expectations, and project details that help a casting review move faster.
Related Capability Guide
How To Choose A Drawing-Based OEM Metal Casting Supplier In 2026
A practical sourcing guide for overseas OEM buyers comparing drawing-based metal casting suppliers, including early technical review, machining, inspection, capacity, and RFQ readiness.
RFQ Focus
Ready To Turn Quality Requirements Into A Stronger RFQ?
Upload the drawing and send the quality, machining, quantity, and packing notes already available. Hongsen can use the first review to clarify the remaining project-specific points before quotation.