The short answer
A full custom-denim cycle from first contact to goods in hand takes 6–10 weeks with a Chinese factory: 7–10 days for the first sample, 1–3 sample rounds over 2–4 weeks, then 25–35 days bulk production, plus 2–4 weeks ocean freight. If you use ODM (factory library) styles, you can skip most of the development stage and start bulk in as little as 3–4 weeks. The two variables that blow up timelines are wash development and fabric availability — plan around both.
The lead-time timeline, stage by stage
Stage 1: Development & sampling (2–4 weeks)
- Pattern/tech-pack check: 2–5 days
- First sample: 7–10 days at most Xintang factories (Timber Forge benchmark: 7–10 days)
- Wash development: adds 3–7 days per recipe
- Approval rounds: 1–3 rounds typical; each round 5–10 days
How to compress: send a complete tech pack (measurements, wash reference, trim specs) and limit sample rounds to 2. A clear brief saves 1–2 weeks.
Stage 2: Fabric & trim procurement (1–3 weeks, can overlap)
- In-stock fabric: 0–1 week
- Mill production for fabric: 2–4 weeks
- Custom trims/hardware with molds: 3–5 weeks
Key insight: fabric is usually the critical path. If your fabric is in the factory’s stock, bulk can start immediately after sample approval. If it must be woven, add 2–4 weeks.
Stage 3: Bulk production (25–35 days typical)
- Cutting & sewing: 10–15 days
- Washing & finishing: 5–10 days (complex washes longer)
- QC, pressing, packing: 3–5 days
Volume mills running large orders may quote 40–60 days; small-batch factories (MOQ 100) often deliver faster because the line isn’t congested with huge runs.
Stage 4: Shipping (2–6 weeks depending on mode)
- Air freight (sea-air): 5–10 days
- Ocean freight China→US West Coast: 15–25 days; →EU: 25–35 days
- Customs clearance: 3–7 days
Comparison: OEM vs ODM lead times
| Stage | OEM (your design) | ODM (factory design) |
|---|---|---|
| Development | 2–4 weeks | 0–1 week |
| Sampling | 7–10 days × 1–3 rounds | 5–7 days × 1 round |
| Bulk production | 25–35 days | 20–30 days |
| Total to ship | 6–10 weeks | 4–6 weeks |
What delays denim orders (and how to avoid it)
- Wash development — the #1 delay. Fix washes on the first sample and freeze them in writing.
- Fabric not in stock — order fabric 3–4 weeks before you need production.
- Vague tech packs — missing measurements cause extra sample rounds. Use a standardized spec sheet.
- Peak season (Jan–Mar pre-summer, Jul–Sep pre-fall) — book production slots 4–6 weeks ahead; Xintang factories fill up.
- Late trim approvals — approve buttons/labels/patches before bulk starts, not during.
Planning backwards: a seasonal launch example
Target: jeans on shelves in September (fall collection).
| Action | Deadline (approx.) |
|---|---|
| Factory contact & brief | Early June |
| Sample round 1 | Mid-June |
| Final sample approval + fabric order | Late June |
| Bulk production | Early July – early August (25–35 days) |
| Shipment + freight | Mid-August – mid-September |
| Landed & QC | Late September |
Work backwards from your shelf date and add a 2-week buffer — most sourcing delays are discovered late.
How to get faster lead times
- Choose ODM styles for quick-turn collections (4–6 weeks total)
- Use in-stock fabric from the factory
- Batch sample rounds — one round for fit, one for wash, not sequential
- Sign off in writing — verbal approvals cause rework
- Split shipments — air the bestsellers, ocean the rest
- Book capacity early for peak-season launches
- Cotton Incorporated, denim industry data — cottonworks.com
- U.S. Department of Commerce, trade & logistics guides — trade.gov
- Factory lead-time benchmarks (7–10 day sampling, 25–35 day bulk): Timber Forge Co., Xintang Workshop, published production data
About the author: The Timber Forge Team is the production team behind Timber Forge Co. (Xintang, Guangzhou, est. 2005). We publish denim sourcing guides from firsthand factory experience. Plan your launch: 446976008@qq.com | WhatsApp +8613535313470.
How long does it take to make custom jeans in China?
6–10 weeks from first contact to shipped, including 2–4 weeks of sampling and 25–35 days of bulk production; ODM styles can ship in 4–6 weeks.
How long does denim sampling take?
7–10 days for the first sample at most Chinese factories; each additional round adds 5–10 days. Most brands approve in 2–3 rounds.
What is the fastest way to produce jeans?
ODM styles with in-stock fabric — samples in 5–7 days, bulk in 20–30 days, total 4–6 weeks.
Do Chinese factories get faster in off-season?
Yes — outside peak season (Jan–Mar, Jul–Sep), production slots open up and lead times shrink by 1–2 weeks.
Air or sea freight for denim?
Ocean is far cheaper (2–4 weeks China→US/EU); air (5–10 days) is worth it only for bestsellers or urgent launches.
What MOQ can I produce at with short lead times?
Small-batch factories like Timber Forge Co. (MOQ 100) keep short lead times because their lines handle small runs efficiently; volume mills may deprioritize small orders.