Flange Type Double Ball Flexible Stainless Steel Thread Expansion Rubber Joint

• Customization: Available
• After-sales Service: Onlie
• Connection: Flange
• Model NO.: XTQ2RF
• Kind: Single/Double Sphere Rubber Expansion Joint
• Type: Water, Oil, Gas
• Head Code: Square
• Material: EPDM / NBR Rubber + Carbon Steel Flange
• Surface Treatment: Black Painting / Anti-Rust Painting
• Customized: Customized
• Certification: CE, ISO14001, ISO9001
• Warranty: 3 Years
• Application: Sea Water/Oil/Gas/Acid/Alkali
• Technics: Forged
• Name: Double Sphere Flexible Rubber Expansion Joints
• Model Number: Single/Double Ball Flexible Rubber Joints
• Working Pressure: Pn10/16/25
• Applicable Temperature: -15℃--+115℃
• Standard: ASTM DIN En BS JIS etc
• Transport Package: Wooden Box
• Specification: DN25-DN3000
• Trademark: Maitolead
• Origin: Hebei, China
• HS Code: 40169990
• Production Capacity: 50000tons/Year
• Package Size: 48.50cm * 32.00cm * 18.00cm
• Package Gross Weight: 20.000kg

Product Description

ABOUT US

MaitoLead Group specializes in providing complete fluid transport solutions. Our partner factories are equipped with advanced rubber vulcanization production lines and CNC flange processing machines, supplying high-performance rubber expansion joints to projects worldwide.

These products are widely used in fire protection systems, HVAC, water supply, petroleum, chemical, power, metallurgy, shipbuilding, and general industrial pipelines. They effectively compensate pipeline movement, absorb vibration, and reduce noise, ensuring long-term, stable system performance.

 
Product Structure & Materials
Our single sphere rubber expansion joint consists of:

Rubber Body (EPDM / NBR): High-elasticity rubber with excellent aging resistance, corrosion resistance, and fatigue durability.
Reinforcement Layer: Multi-layer high-strength nylon cord to enhance pressure resistance and structural stability.
Steel Ring: Embedded steel wire at ends ensures stable sealing.
Flanges (Carbon Steel / Stainless Steel): CNC machined, compliant with EN1092 / DIN / ANSI standards, with galvanization or painted anti-corrosion treatment.
 
Key Features
Pressure Rating: PN10 / PN16
Rubber Material Options: EPDM (heat & corrosion resistant), NBR (oil resistant)
Flange Material: Carbon Steel (galvanized), Stainless Steel 304/316
Single Sphere Design: High flexibility, excellent vibration absorption
Temperature Range: −20°C to +120°C (depending on rubber material)
Reduces pump and valve vibration and system noise
Compatible with multiple international flange standards
Customizable high-temperature, chemical-resistant, or oil-resistant rubber
 
Production & Quality Control
Fully controlled rubber vulcanization process
100% pressure tested before shipment
CNC-machined flanges for accurate hole spacing
Rubber raw material tested for tensile strength, hardness, and aging resistance
Pressure testing with international standard testing machines
Strict visual and dimensional inspection

Product Description

High Pressure Rubber Reducing Coupling Flexible Joint Single

Sphere Rubber Reducing Expansion Joint Connector Pipe Fittings
 Flexible rubber joints are also called rubber joints, rubber flexible joints, soft joints, shock absorbers, pipeline shock absorbers, shock-absorbing throats, etc. They are a kind of high elasticity, high air tightness, medium resistance and weather resistance. Pipe joints. This product takes advantage of rubber's elasticity, high air tightness, medium resistance, weather resistance and radiation resistance, etc. After being cross-compounded with polyester cord fabric with high strength and strong cold and heat stability, it undergoes high pressure, It is vulcanized by high 

Name	Double Sphere Flexible rubber expansion joints
Standard	DIN/ANSI/JIS/BS
Size	DN32-DN3000
Rubber material	NBR/CR/EPDM/IIR
Flange surface	Carbon steel /SS316
Processing Service	Moulding, Cutting
Surface treatment	Black Painting,Anti-Rust Painting,Galvanized,Epoxy Coating(Epoxy Painted)

Product Inspection

PRODUCTION LINE

PACKING&SHIPING

FAQ

1.Can I have a sample order for valve?
A: Definitely Yes.We welcome sample order to test and check quality. Mixed samples are acceptable. 

2. Can you OEM or ODM?
A:Yes, we have a great research & development team. The products can be made according to your request.

3. Can you provide the relevant documentation and certificate?
A:Yes, we can provide you with the documentation and certificate you need ,IS09001:2000 international quality system
certification,(CE)certification of the European Community, Det Norske Veritas (DNV) factory certification, Lloyd's Register
(LR)factory certification, China Classification Society (CCS) quality system certification and the FM and UL certification of the US,Bureau Veritas(BV) ,American Bureau of Shipping(ABS) etc.Of course we can also provide you the test Report; Certificate of Material Analysis; Certificate of Origin; and other export documents which required. 

4.Can you do the design for us?
A:yes.Please send us high resolutionimages,your logo and other materials needed . We will send you finished files for
confirmation.

5.What is your terms of delivery?
A: We accepte EXW,FOB,CIF,etc. You can choose the one which is the most convenient for you.

6.What's the package and how do you ship the goods?
A: Usually is wood pallet as your requst. We usually ship by sea.Airline shipping is also optional.

7. How to deal with after sales ?
A: warranty time : 12 months from the shipment ; and we will be responsible for all the quality problems. Quality control : High quality mold./Raw materials control/Production process quality control/Final inspection/Water testing (no leaking).

8. What is the average lead time?
A:For samples, the delivery time is about 2-5 days. For mass production, the lead time is about 15-60 days after receiving the deposit payment. we can provide production schedule and related photos every two weeks. The lead times become effective when (1)we have received your deposit, and (2) we have your final approval for your products.If our lead times do not work with your deadline, please go over your requirements with your sale. In all cases we will try to accommodate our production plan to your needs.