OpeningYour drawing defines the part. We build it exactly to that geometry, then verify every critical dimension before the carton leaves our floor. No surprises at your incoming inspection.These are
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OpeningYour drawing defines the part. We build it exactly to that geometry, then verify every critical dimension before the carton leaves our floor. No surprises at your incoming inspection.These are
Your drawing defines the part. We build it exactly to that geometry, then verify every critical dimension before the carton leaves our floor. No surprises at your incoming inspection.
These are not off-the-shelf coils. They are decorative craft springs made to your print—wire diameter, pitch, coil count, and end finish all locked to your tolerance.
| Parameter | Value |
|---|---|
| Wire diameter | 0.1 mm – 12 mm |
| Spring OD | Up to 150 mm |
| Free length | Up to 300 mm |
| Materials | Music wire (EN 10270-1), stainless 302/304/316, phosphor bronze, beryllium copper, 65Mn carbon steel |
| Processes | CNC coiling (0.1–8 mm wire), CNC wire forming (8–12 mm), automatic grinding, heat treatment, shot peening |
| Tolerance class | DIN 2095 grade 1 or 2, custom per print |
| Surface finish | Zinc plated, nickel plated, powder coated, electropolishing, passivation, or as-drawn |
| End types | Closed & ground, closed not ground, plain ends, custom hooks/loops |
| Batch size | No MOQ—pilot runs from 10 pcs, production up to 500k pcs/month |
| Inspection | Load testing, fatigue testing, metallurgical analysis, salt spray test on plated parts |
All springs are coiled on CNC machines with servo-controlled pitch. Heat treatment is done in atmosphere-controlled furnaces. We hold hardness within ±2 HRC on request.
1. Batch-traceable quality Every coil gets a heat number and a work order number. We can trace any spring back to the wire lot, the machine operator, and the heat treatment cycle. If you have a field failure, we tell you exactly what happened—not a guess.
2. Inspection report per batch You get a PDF with measured values for OD, ID, free length, solid height, and load at specified deflection. We also include wire tensile strength and hardness data. Your QC team can file it without re-testing.
3. One factory for CNC + stamping + spring + heatsink Your assembly might need a stamped bracket, a CNC-machined housing, and a heat sink—plus the spring. We run all four lines under one roof. That means one purchase order, one shipping date, and one responsible supplier. No coordination headaches across three vendors.
Decorative craft springs show up in more than toys. We ship them into:
The common thread: the spring must look good and work reliably. We polish or plate to a cosmetic standard, but we never sacrifice the load curve.
Looking for a different part? We also machine Custom Decorative Craft Springs | Precision Manufacturing Made in China in the same Dongguan factory.
Q: What is your MOQ? A: No MOQ. We accept 10-piece prototype orders and scale to 500,000 pieces per month. Prototype tooling is free for standard wire diameters.
Q: How do you control tolerance and quality? A: We use CNC coiling with closed-loop feedback. Every spring is checked on a digital caliper or optical comparator. Critical dimensions are 100% inspected; non-critical are sampled per AQL 1.0. We send the inspection report with your shipment.
Q: What is your lead time for custom springs? A: Prototypes ship in 7–12 days after drawing approval. Production runs take 15–20 days, depending on surface treatment. Urgent orders can be expedited to 5 days with a small surcharge.
Q: Can you provide material certificates? A: Yes. Every batch includes a mill test report showing chemical composition and mechanical properties. We also provide RoHS and REACH compliance documents on request.
Email your PDF or STEP file. We reply with a firm quote in 12 hours—including price, lead time, and a DFM note if we see a better way to make it.
Email: sc@bquq.com WhatsApp: +86 13713157787
Precision manufacturing, made in China, no MOQ. Send the drawing, get the quote.
| Parameter | Capability |
|---|---|
| Materials | SUS302/304/316, SWC piano wire, SWP music wire, 65Mn, phosphor bronze, beryllium copper |
| Types | Compression, extension, torsion, wire forms, battery springs, touch springs |
| Wire Diameter | 0.05 - 12.0 mm |
| Tolerance | ±0.02mm standard, ±0.01mm on request |
| Surface | Zinc plating, nickel, black oxide, passivation, shot peening |
| Machines | CNC spring coiling machines, torsion machines, wire forming machines |
| Prototype | 72 hours, no MOQ on samples |
| Inspection | Load test per batch, fatigue test data on request |
