We only use hot-dip galvanized steel sheets for our ducts, and the zinc coating on every single one? It's at least 275g per square meter-no cutting corners here. You might be wondering, why does that number even matter? Let me tell you: we put these ducts through salt spray testing, and they didn't rust at all for 5000 hours straight. That's way better than what most other factories can do-most just meet the bare minimum, but we go above that.
And that durability? It's a big deal for your customers. They can slap these ducts in malls, factories, office ventilation systems-wherever-and use them for years without stressing about replacing them early. Oh, and the spiral design helps with airtightness too. When the air pressure's cranked up to max, the leakage rate is less than 2%. That means whoever installs them won't waste as much energy-total win for their bottom line.
And another thing: the inside of the Galvanized Steel Spiral Duct is super smooth, so air flows through easier. We did airflow simulations, and it turns out this duct boosts ventilation efficiency by 15% compared to old-school rectangular ones. For wholesale clients focused on energy savings, that's a big selling point you can lean on.
Let me walk you through how we handle Galvanized Steel Spiral Duct production-start to finish, we keep quality tight.
Next, we slit those coils into strips of the right width using fully automated machines. The precision here is crazy-only ±0.1mm off, which makes sure every duct ends up with the same diameter later. Then, those strips go into CNC spiral duct machines to form the spiral shape.
These machines can make ducts from 80mm to 1600mm in diameter, and they crank out up to 15 meters per minute. That's fast enough to keep up with even big wholesale orders. After forming, every duct gets a pressure test-we use the bubble test method SMACNA recommends, so no leaks slip through.
Finally, we cut them to length with laser cutters, which are accurate to ±0.5mm. The whole line is watched over by a computerized QC system, and every step gets logged. So if you need a traceability report for a batch of Galvanized Steel Spiral Duct, we can pull it up easy-no guesswork for you or your customers.
For wholesale clients, having a factory that can keep up with your orders is make-or-break-and we've got that covered. Right now, we run 8 fully automated lines for Galvanized Steel Spiral Duct, and each one can make up to 2000 meters a day.
Add that up, and we hit 400,000 meters a month. So if you need 100,000 meters or more, we can get it done in a week. No waiting around because we're backed up-we know you need to restock fast. We also have a huge raw material warehouse with 5000 tons of galvanized steel coils on hand, so material shortages never slow us down.
To keep things on track, we've got a dedicated team that uses ERP software to plan production. That software sorts out the most efficient way to run orders, so everything gets made and shipped when we say it will. And we know shipping to Europe and America is a big part of your business-our factory is close to major ports, and we work with logistics companies that specialize in HVAC stuff.
Every batch of Galvanized Steel Spiral Duct gets packed with moisture-proof and shock-proof materials, so nothing gets damaged on the way. Over the past three years, we've had a 99.5% on-time delivery rate and only 0.3% damage rate-you can count on us to get your order there right, and on time.
We don't just sell Galvanized Steel Spiral Duct-we stand behind what we make, and we want you to feel confident working with us. First off, we offer a 5-year warranty. If any duct rusts or leaks within 5 years (as long as it's used normally), we'll replace it or fix it for free. That's in line with European and American consumer standards, so your customers get that long-term peace of mind too.
Second, on-time delivery isn't just a promise-it's in writing. We sign a delivery agreement with every customer that includes a late penalty: if we're late without a good reason, we pay 0.5% of the order value per day, up to 10% total. We know your business depends on getting stock when you need it, so we take that seriously.
Third, we're here for you after the sale too. Our HVAC engineers are available 24/7-if you or your customers have questions about installing the Galvanized Steel Spiral Duct or keeping it maintained, just reach out. We also offer free sample testing: request a sample, and we'll send it with a full report-zinc coating thickness, airtightness, pressure resistance, all the details you need to sell with confidence.
Frequently Asked Questions
Q: Can you provide invoices?
A: Sure. VAT or regular invoices. Note details when ordering-sent with goods or separate.
Q: Payment methods?
A: Visa, Mastercard, PayPal, bank transfer-all work. Big orders? We can do prepayment + final payment. Ask sales for details.
Q: Price include taxes?
A: No, default. Need tax-inclusive? We'll recalculate. Tax in contract.
