Procurement teams often compare lead times as if they were fixed product specifications. They are not. A ten-day promise can become three weeks when the material is not available, a heat treatment slot is missed, or inspection finds a problem just before packing.
What the factory should review first
At Nbfeiyu, the schedule discussion starts with the part, not the calendar. Engineering checks the material grade, quantity, tolerance, surface finish, tooling requirement and inspection points. A simple turned part and a part that needs machining, welding, finishing and assembly may look similar in an RFQ spreadsheet but require very different schedules.
A common factory-side failure
One recurring problem is quoting the machining time while forgetting the queue for finishing. The parts leave the machine on time, then wait for anodizing, plating or coating. The buyer sees a late shipment and assumes the machining line failed. The real issue was that the complete route was never planned.
What a useful lead-time promise includes
- Drawing and specification review date.
- Material purchasing and incoming inspection.
- Tooling, fixture or programming time.
- Machining, molding, welding or assembly duration.
- Outside finishing and the time reserved for it.
- First article approval and final inspection.
- Packing, export documents and shipment handover.
For larger programs, buyers should also ask what happens if the first article needs a correction. A schedule with no allowance for engineering feedback is not a robust schedule.
Buyer checklist
- Ask for the assumptions behind the promised date.
- Separate sample lead time from repeat-order lead time.
- Confirm which processes are in-house and which are outsourced.
- Ask when the first inspection report will be available.
- Define the shipment date as handover to the forwarder, not simply production completion.
FAQ
Is the fastest quoted date always the best option?
No. A realistic date with identified checkpoints is more useful than a short date that ignores finishing or inspection.
Can lead time be reduced?
Often, yes, when the buyer releases complete drawings, approves samples promptly and agrees on the inspection plan early.
See our prototype-to-repeat production guide, assembly and supply chain capability and total landed cost guide for related planning points.
Need a schedule review for a custom part?
Send the drawing, quantity and target date.