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They’re not the cheapest clamp on teh market, and you’ll notice that upfront — but what you’re paying for is a quick-release mechanism that actually holds under load, not just the convenience of a lever you flip once and hope it stays.
We’ve had customers try them on dust extraction runs where vibration shakes loose cheaper spring clamps within a week, and these don’t budge, basically because the rubber inner ring creates a seal that also dampens that constant rattling from the ductwork.
The galvanized steel body runs 1.0 to 1.2mm thick, zinc plated on top, so you’re getting better corrosion resisance than most painted alternatives that flake after a few months in a humid shop enviroment.
Sizes go from 80mm up to 600mm (usually 2-4 weeks lead time for anything above 400mm, so check stock first) and the customization options are pretty straightforward — we just need a week’s notice for non-standard diameters within that range.
It’s not a clamp for high-presure pneumatic lines, mind you — the quick release design trades some clamping force for speed, so keep it for low-to-medium pressure HVAC or extraction where you’re swapping filters or rerouting pipes regularly.
Two things that don’t show on the spec sheet: the lever action is stiff out of box, give or take a few cycles before it loosens, and the galvanized finish can leave slight transfer marks on stainless ducting if that matters to your install.
We can handle custom sizes outside that range, but the MOQ is typically 500 pieces per size to keep production costs down. For sizes within 80-600mm, we can work with smaller quantities.
Yes, we can provide a mill test certificate for the galvanized steel and a salt spray test report for the zinc plating on request. Just let us know what you need when placing the order.
For a mixed batch of 2000 pieces, lead time is about 2-3 weeks from order confirmation. If it's a standard size we stock, it could be faster.
The rubber inner ring is not designed to be replaceable—it's bonded during assembly. But the clamp itself is built to last, and the rubber typically holds up well in HVAC dust extraction setups.
Keep them in a dry, indoor area with low humidity, ideally below 60%. The zinc plating offers good corrosion resistance, but stacking them in a damp shed could cause some surface oxidation over time.
