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It's basically a flexible connector that goes between two pipe sections to handle vibration, noise, and pipes shifting due to tempearture changes — you'll see them in water, oil, or air systems where rigid connections just won't cut it.
Most buyers use these in pump and compressor setups or where thermal expansion is a real issue, but it's not for high-pressure steam lines or anything above about 115°C because the rubber just gives out. 3. The body is EPDM or NBR rubber depending on whether you need oil resistance or better weather resistnce, and we reinforce it with 10 layers of nylon cord plus copper plated steel wire inside (prevents pull-off on bigger sizes). We cover from DN32 up to DN1000, pressure ratings from PN10 to PN25 or 125LB/150LB, and flanges match DIN, ANSI, GB, JIS, or BSW standdard.
Sizes above DN100 definately need copper wire reinforcement or they'll pull apart under pressure — that's something a lot of people don't ask about until it fails. 5. Anyway, we usually stock common sizes like DN50 to DN300, but anything over DN400 needs about 20 days or so for production. Service life is roughly 3 years under normal conditions, but if you're pumping abrasive slurry, expect less.
We've been making these for about 8 years now, so we know the tolerances are tighter than most generic imports, and every batch comes with a proper COA and SGS report if you need it.
For DN1000, we typically supply PN10 and PN16. PN25 and 150LB are also possible, but we'd need to verify wall thickness and flange specs first — just confirm your working pressure when you order.
Yes, we include both CE and SGS test reports with each order. Just let us know if you need the originals or certified copies — we'll prepare them along with the packing list.
For DN32, the MOQ is 50 pieces. If you need a smaller trial batch, we can do 20 pieces at a slightly higher unit price — just talk to our sales.
Absolutely. We make flanges to DIN, ANSI, GB, JIS, and BSW standards. Just specify ANSI 150LB in your order, and we'll match the bolt hole pattern and dimensions.
Keep them in a cool, dry place away from direct sunlight and ozone sources — like motors or welding areas. Stack them flat, and avoid heavy loads on top so the rubber doesn't deform. They'll hold up fine for the full service life if stored properly.
