Own factory, not a trader
2,600 m² workshop with rubber injection, fabric wrapping and in-house flange machining. Video audit welcome before the first order.
Factory direct · 60+ countries served
Rubber expansion joints built for piping that moves.
Single and double sphere, threaded, reducer, PTFE-lined and tie-rod expansion joints. DN15–DN1200, EPDM / NBR / NR, flange drilling to DIN, ANSI, JIS and BS on request.
DN15 – DN1200
PN10 / 16 / 25
−15 °C … +115 °C
Axial ±35 mm
DIN · ANSI · JIS · BS
Lead time
7–15 days · 12,000 pcs / month
Product matrix
Six series cover most pipeline movement problems
Reference prices are shown per piece, FOB Ningbo, for budget planning — the formal quotation always follows your size list and quantity.
No products published yet
Add series under “Products → Add new” in the dashboard. Each series needs a series code, a card one-liner and a reference price to appear here.
18 yrsManufacturing experience
60+Export countries
12,000 pcsMonthly capacity
12 hQuotation response
Why buyers stay
What an importer actually needs from a Chinese supplier
Not the cheapest price on Alibaba — a supplier who answers drawings quickly, keeps the flange drilling right, and does not disappear after the deposit.
Drawing-based quotation
Send a PDF drawing or a photo of the old part. Our engineer returns dimensioned drawings and a costed offer within 12 working hours.
Tested before it ships
100% hydrostatic test at 1.5× working pressure, plus batch reports for hardness, tensile strength and burst pressure.
Export packing done right
Plywood cases, desiccant, flange face protection and mixed-container consolidation with our valve lines to cut your freight cost.
Applications
Where these joints are installed
Water & wastewater
Pump suction and discharge, filtration plants, desalination lines. EPDM body, PN10/16.
HVAC & district cooling
Chiller headers and riser connections where vibration and thermal growth must be absorbed.
Chemical & process
PTFE-lined joints for acid, alkali and solvent service up to +100 °C.
Marine & offshore
Sea-water resistant compounds, SS316 flanges, tie-rod restrained versions for deck piping.
Buyer questions
Answers importers ask before the first PO
What is your MOQ and can I mix sizes in one container?
MOQ is 20 pcs per size for standard EPDM joints, no MOQ for samples. Mixed sizes and mixed series are welcome — we consolidate with our valve lines so you can fill a 20GP without over-ordering a single size.
Can you produce to my flange drilling and face-to-face length?
DIN PN10/16, ANSI 150#, JIS 10K and BS 4504 are standard tooling. Non-standard drilling and special face-to-face dimensions are made to drawing — feasibility is confirmed within one working day.
Which rubber compound should I choose for my media?
EPDM for hot water and weather (−15 to +115 °C), NBR for oil and fuel (−20 to +80 °C), Neoprene for sea water and ozone, PTFE lining for acids and solvents. Send the media and concentration and our engineer will specify.
Do you supply test certificates and third-party inspection?
Every shipment includes a hydrostatic test report and material batch certificate. SGS, BV, TÜV and Intertek inspection can be arranged at your cost, and we host live video inspection before packing.
What are the payment and shipping terms?
30% T/T deposit with balance against B/L copy; L/C at sight accepted for orders above USD 30,000. FOB Ningbo/Shanghai, CIF and DDP available. Lead time 7–15 days standard, 20–25 days for special drilling.
Send your size list, get a costed offer in 12 hours
Attach a drawing, a photo of the failed part, or just tell us DN, pressure and media. You will get a technical recommendation plus FOB pricing — no obligation.