French Downspout Maker Buys 3003 H24 Color Coated Aluminum Coil 0.7x1140mm from Our Factory Since 2021
Henan Yongsheng Aluminum Industry Co., Ltd. supplies 3003 H24 color coated aluminum coil, 0.7 mm × 1140 mm, to a rainwater downspout manufacturer in France who roll-forms the coil into downpipes and gutter profiles. Since 2021 the customer has bought from our factory without interruption at ten 20 ft containers per year, in three combinations: white face with high-gloss grey back, white face with champagne gold back, and white face with sparkling silver back.
Client Background
The client manufactures rainwater downspouts and facade drainage components in France for roofing distributors, contractors and renovation projects. Coils are uncoiled, profiled, cut and sometimes bent on continuous roll-forming lines, so the painted surface must survive severe forming without cracking or flaking. Because downpipes stay visible on the outside of buildings, French buyers judge them by appearance as much as function: the white inner face must stay uniform while the outer face matches the gutter and trim on the same facade. The client needed a supplier able to hold colour consistency batch after batch, coat two colours on the two faces of one coil, and keep landed cost competitive.
Product Specifications
| Parameter | Detail |
|---|---|
| Product | Color coated aluminum coil (pre-painted coil) |
| Alloy / Temper | 3003 (aluminum-manganese) / H24 |
| Thickness / Width | 0.7 mm × 1140 mm |
| Colour Options | White face / high-gloss grey back White face / champagne gold back White face / sparkling silver back |
| Coating Structure | PE (polyester) double-side colour coating with independent top and back coat colours |
| Application | Rainwater downspouts, gutters and facade drainage profiles |
| Quality Documents | Product Quality Certificate (PQC) and TDS issued per batch |
| Inspection | Free samples for production testing; SGS / BV / Intertek third-party inspection supported |
| Supply Record | Continuous cooperation since 2021, ten 20 ft containers per year |
| Price Term | Factory-direct price |
| Customization | Alloy, temper, thickness, width, colour and coil weight to order |
Key Quality Features
- Balanced 3003 H24 substrate: The manganese alloy with H24 temper gives rigidity for slim downpipe profiles while still allowing tight roll forming and outlet bending without cracking.
- Independent two-face colours: The white inner face stays uniform while the outer face matches each customer's high-gloss grey, champagne gold or sparkling silver shade.
- Batch-to-batch colour control: Colour difference is measured against the approved standard, preventing visible shade mismatch between downpipes, gutters and trims on one facade.
- Strong coating adhesion: Controlled pre-treatment and curing let the paint film resist profiling, cutting and bending without flaking or edge chipping.
- PE coating weather and UV resistance: The polyester coating system holds colour and gloss through rain, frost and summer UV in the French climate.
- Factory-direct cost advantage: Coils are cast-rolled, coated and slit in our own plant and sold without middlemen, so the client keeps a landed cost that supports competitive retail pricing in France.
Project Results
- Supply has run continuously since 2021, with roughly ten 20 ft containers ordered every year.
- Three colour combinations are produced to one specification, so the client serves several facade styles without re-approving samples or changing suppliers.
- Consistent coil quality keeps roll-forming lines free of scrap spikes from gauge variation, coating defects or shade differences.
- Precise 0.7 × 1140 mm dimensions kept forming stable and minimised edge trim waste.
- Documented quality and pre-shipment verification give the buyer predictable cost and delivery planning.
Client Feedback
The client expresses ongoing satisfaction with both the quality and the price of our color coated aluminum coil, and cooperation has continued without interruption since 2021. They value the consistent colour from coil to coil, the reliable forming behaviour of the 3003 H24 substrate and the clean painted surface. Commercially, our factory-direct price helps them stay competitive in France while protecting margin. They also rely on the PQC and TDS supplied with each batch, third-party inspection through SGS, BV or Intertek, and factory visits or live video audits before shipment.
Why Partner With Yongsheng
- Over 20 years of aluminium processing, with cast-rolling, annealing, continuous colour coating and slitting lines under one roof.
- In-house control from substrate to painted coil, so gauge, flatness and coating quality are managed at source.
- Factory-direct pricing without middlemen — how a ten-container-a-year programme keeps its cost advantage.
- Full-process inspection of chemical composition, mechanical properties, gauge, coating thickness, colour difference and adhesion.
- Free samples, PQC and TDS with every batch, plus SGS, BV or Intertek inspection on request.
- Factory visits and live video audits welcome for buyers who cannot travel to China.
If you are looking for a reliable color coated aluminum coil supplier for downspouts, gutters or facade profiles, contact us today for a tailored quotation and free production samples.