OpeningYour bipolar plate drawing is the starting point. We turn it into a stamped part with verified dimensions before shipment. No guesswork. No rework on your end.We are BQUQ, a precision manufactu
Your bipolar plate drawing is the starting point. We turn it into a stamped part with verified dimensions before shipment. No guesswork. No rework on your end.
We are BQUQ, a precision manufacturing factory in Dongguan, China. We have run metal stamping lines for 20 years. Our engineers check every critical dimension against your CAD file. We send you a full inspection report before the parts leave our floor.
| Parameter | Value | Notes |
|---|---|---|
| Materials | SS316L, SS304, Ti Gr1/Gr2, Ni201, Ni203 | 0.05–0.3 mm sheet thickness standard |
| Process | Progressive die stamping, hydroforming | Dies made in-house, 3D-verified |
| Tolerance | ±0.05 mm critical, ±0.1 mm general | Cpk ≥ 1.33 on key features |
| Surface finish | Ra 0.4–0.8 µm on sealing surfaces | Optional coating: TiN, gold, carbon |
| Channel depth | 0.3–1.0 mm | Width-to-depth ratio per your design |
| Burr height | ≤ 0.03 mm | Deburred on both sides |
| Flatness | ≤ 0.1 mm over 100 mm length | Checked with CMM |
| Batch size | 1–100,000+ pieces | No MOQ, tooling amortized per order |
| Lead time | 10 days prototype, 20 days production | Expedite available for urgent builds |
| Inspection | CMM, optical profiler, leak test | Report included per batch |
1. Batch-traceable quality. Every lot gets a unique number. We record material heat number, die settings, and inspection results for that batch. If you have a field failure, we trace it back to the exact run. You get a PDF report with each shipment.
2. Inspection report per batch. We do not just stamp and ship. We measure channel depth, plate flatness, and sealing surface roughness on a CMM. You receive the raw data, not a summary. This is standard, not a paid extra.
3. One factory for CNC + stamping + spring + heatsink. Your bipolar plate may need a welded spring contact or a machined manifold block. We do all of it under one roof. No third-party coordination, no shipping delays between vendors. Your drawing goes to one engineering team.
Our stamped bipolar plates go into real systems, not just lab demos.
Looking for a different part? We also machine Precision Stamped Washers and Shims | Custom Metal Stamping No MOQ in the same Dongguan factory.
Q: Do you really have no MOQ? A: Yes. You can order 1 piece for fit check or 100,000 for production. Tooling cost is quoted separately, but we amortize it over your first production order if you commit.
Q: What tolerance can you hold on stamped plates? A: ±0.05 mm on channel depth and critical sealing surfaces. General dimensions are ±0.1 mm. We verify with CMM and include the report. If your design needs tighter, we switch to hydroforming or CNC post-processing.
Q: What is your lead time for a prototype? A: 10–15 working days from drawing approval. This includes die making, first article inspection, and shipping. Production runs take 20–25 days. We can rush a single piece in 5 days for a premium.
Q: Can you provide material certificates? A: Yes. We supply mill certificates for every coil or sheet used in your batch. We also provide a chemical composition report and mechanical property test data on request. All traceable to the heat number.
Email your STEP or PDF drawing to sc@bquq.com. Our engineers review it within 4 hours. You get a firm quote in 12 hours — including tooling cost, unit price, and lead time.
Prefer to talk? WhatsApp us at +86 13713157787. We answer in English, Chinese, or German.
Custom metal stamping made in China does not mean cutting corners. It means precision manufacturing with full traceability. Send us your drawing and see the difference.
| Parameter | Capability |
|---|---|
| Materials | SPCC, SGCC, SUS301/304/316, brass, copper, beryllium copper, phosphor bronze |
| Process | Progressive die stamping, fine blanking, deep drawing, bending, tapping |
| Tolerance | ±0.01mm standard, ±0.005mm on request |
| Surface | Zinc plating, nickel, tin, gold, powder coating, passivation, anodizing |
| Die Size | Up to 1200 x 800 mm, 16-250 ton presses |
| Thickness | 0.05 - 6.0 mm sheet metal, wire 0.1 - 8.0 mm |
| Prototype | 7-15 days tooling, no MOQ on samples |
| Inspection | Full report per batch, CMM and optical measurement |
