DIRECT ANSWERLead time is driven by drawing approval, material and bought-out items, forming/welding workload, heat treatment, inspection and witness points, repairs, document review, batch sequence and transport.
Lead-time logic
- Design freeze and vendor-document review dates
- Long-lead material and component release
- Fabrication, NDE, heat treatment and testing sequence
- Witness notices, dossier release, packing and transport
Relevant manufacturing capability
- Drawing, datasheet and equipment-list manufacturability review
- Self-manufactured and coordinated-supply scope identification
- Technical, quality, document and delivery clarification
Key notes
- A requested date is not credible until inputs and hold points are linked.