Machinery prototyping (test runs) generally takes 1–3 working days—2 days for material test runs (Shengwei standard) and 1–2 days for welding/processing samples (Henglong/Xinsiman). Production lead times for complete machines are 10–18 working days, while customized models take 15–45 days. The prototyping phase is short;
the production lead time accounts for the bulk of the total duration.
I.
Test Run/Prototyping Cycle
Material test runs: Generally 1–2 working days (2 days for Shengwei packaging machine standard tests; 1–2 days for Xinsiman comprehensive tests); Welding samples: 1–3 days for sample processing using customer-supplied workpieces, including destructive testing or metallographic analysis (Henglong); Vibrating screens/dewatering machines: 2–3 days for material testing and data reporting—the actual testing is quick, but shipping time for materials is separate (2–3 days domestically; 5–10 days internationally).
II.
Production Lead Time
Standard models: 10–18 working days (typical for many factories listed on Made-in-China); peak season may extend to 1 month (e.g., Nanjing Tengda: 1 month in peak season vs. 15 working days in off-season); Customized models: 15–45 days (involving structural modifications or specialized equipment); Large-scale projects (e.g., shield tunneling machines or production lines): measured in months—once prototyping is approved, the production lead time determines the total time until delivery.
III. How to Calculate the Total Lead Time
1. Prototyping: 1–3 working days (+ material shipping time); 2. Confirmation: Sample approval + Proforma Invoice (PI) signing (1–3 days); 3. Production: 10–18 working days (standard); 4. Sea Freight: 15–35 days (transit time to Europe/US or Southeast Asia); 5. Customs Clearance: 3–7 days at the destination port. The total cycle from inquiry to delivery is approximately 1.5–3 months (including shipping); for urgent orders, choose in-stock items (shipped within 10 days).
IV. Methods to Shorten the Lead Time
1.
Send materials before inquiring: Negotiate the order while materials are en route to the factory (run prototyping and commercial discussions in parallel); 2. Video machine inspection: Use video calls to witness machine testing if visiting the factory is inconvenient (saves travel costs); 3. Choose in-stock items: Models currently in inventory ship within 10 days; 4. Prepare spare parts in advance: Order accessories simultaneously after the prototype is approved; 5. Parallel production: Schedule production immediately upon prototype approval (leveraging large-scale factory capacity)—prototyping and production can be arranged concurrently.
V.
Time Planning for Overseas Buyers
1. Reverse scheduling: Plan the project based on “Prototyping (1–3 days) + Production (15 days) + Sea Freight (30 days)”; 2. Send materials early: Dispatch prototyping materials before the contract is finalized; 3. Confirm acceptance criteria: Define quality standards before prototyping begins (to avoid rework); 4. Lock in the delivery date: Clearly state the delivery date and delay clauses in the PI; 5. Follow up on FAT: Conduct the Factory Acceptance Test (machine trial run) after production and before shipment.
Industry experts advise: Equipment proofing takes 1–3 working days (including machine testing with provided materials), production lead time is 10–18 days, and customization takes 15–45 days; the total cycle is 1.5–3 months (including sea freight).
Scheduling proceeds only after three key steps are completed: material submission, video-based machine inspection, and consideration of in-stock alternatives.
