Pre-Sale Questions
What materials are used in your metal bellows?
We use stainless steel (304/316L), nickel alloys, and titanium for corrosion resistance and high-temperature applications.
Are you factory, or only a trading company?
Factory, and our factory is located in Taocheng District Economic Development Zone, Hengshui City, Hebei Province.
Can you customize bellows for extreme conditions?
Yes, we design for high pressure (up to 50MPa), temperatures (-200°C to +800°C), and corrosive environments.
What’s the lead time for standard orders?
Typically 15-30 days for stock sizes; customization may require 4-6 weeks.
Do you provide free samples?
Sample costs depend on specifications, but fees are deductible from bulk orders.
In-Sale Questions
Can you give me some discount?
Usually the discount depends on the quantity. However, we can discuss it.
What payment terms do you accept?
T/T, L/C, and PayPal for small orders. 30% deposit, balance before shipment.
Can you assist with import documentation?
We provide commercial invoices, packing lists, and certificates of origin (Form E for ASEAN clients).
What packaging is used for ocean shipping?
Anti-rust VCI film + wooden crates for corrosion protection and impact resistance.
Do you offer OEM branding?
Yes, laser engraving and custom packaging are available.
After-Sale Questions
What’s your warranty policy?
12-24 months warranty against manufacturing defects, with failure analysis reports.
How to handle leaks during use?
Send photos/videos for diagnosis. We replace defective units or guide on-site repairs.
Can you supply replacement parts?
We maintain CAD drawings for 10+ years to ensure part compatibility.
Do you provide installation training?
Yes, via PDF manuals. Critical projects include on-site support.
How to Extend the Service Life of Corrugated Metal Pipes?
- Avoid over-stretching/compressing beyond design limits.
- Prevent corrosion by selecting proper materials (e.g., 316L for saltwater).
- Ensure correct installation—misalignment causes premature fatigue.
- Inspect regularly for leaks, cracks, or pitting.
- Clean gently with non-abrasive methods to protect surfaces.
- Pro Tip: Annual professional checks can boost lifespan by 30%.