A useful quotation starts before a supplier calculates a price. For custom stainless steel fabrication, the first task is to make the intended product unambiguous. A photograph may communicate appearance, but it rarely defines the dimensions, assembly or delivery scope. Use a short, controlled RFQ package to connect those details.
Start with a part schedule
Give every component a unique mark and connect that mark to a drawing revision. State the quantity for each mark rather than providing only a total order quantity. Separate repeated parts from one-off pieces. If dimensions are provisional, label them clearly and explain when site measurements will become available. This lets the supplier distinguish a budget estimate from a production-ready quotation.
Describe the finished component
Specify the material grade and sheet thickness separately from the outside dimensions. A folded cover, a flat sheet and a complete assembly are different purchasing scopes even when their visible face looks similar. Identify concealed returns, holes, cut-outs, welds, mounting brackets and any components that another contractor will supply. Ask the quotation to repeat these inclusions.
Make appearance reviewable
Include a finish reference and mark the visible faces on the drawing. State grain direction, whether adjoining pieces must match, and how samples will be approved. A colour name alone is not an acceptance standard. If a designer must approve the appearance, name that approval step in the RFQ rather than introducing it after the price is agreed.
Ask for a proposed production route
The worldstainless fabrication resource describes multiple forming and joining routes. [1] Ask the proposed supplier which operations are included and which details require a sample. For an architectural assembly, a clear explanation of how corners, seams and visible welds will be treated is more useful than a general claim of precision. Keep unconfirmed process assumptions out of the purchase order.
Compare delivered scope, not one unit rate
Request separate clarification of samples, packing, inspection and transport terms. Specify the destination and whether the quotation is for components only or an assembled package. Ask how changes to drawing revisions affect the price. A comparison sheet should highlight exclusions before you compare totals; a lower price with missing brackets or protective packing may represent a different product.
Close the RFQ with an approval sequence
Set out who approves drawings, who approves finish samples and when production may begin. Ask the supplier to identify unresolved questions in writing. Keep one revision log and issue the same changes to every bidder. This reduces the chance of comparing an early drawing with a later quotation and provides a clear starting point for order confirmation.
Before you request a quotation
- Part marks, drawing numbers and revisions
- Quantity per part and delivery destination
- Grade, thickness, finish and visible faces
- Fixing scope, samples, packing and inspection
- Open questions and required approval dates
Discuss your project
Share your drawing reference, quantity, finish and delivery destination. Contact us about custom stainless steel fabrication, or prepare a structured brief.
Technical references
The purchasing checklists are MetalPro editorial guidance. Linked sources support the specific material and process notes marked above.
