Shanghai Songjiang Jingning Shock Absorber Co.,Ltd.
| Payment Terms | Western Union,T/T,L/C,D/A,D/P,MoneyGram |
| Supply Ability | 10000 sets per week |
| Delivery Time | 5--15 working days |
| Packaging Details | carton or wooden |
| OEM/ODM | for 20 Year's Experience |
| Product name | Rubber Expansion Joint Standard High Pressure Resistant In Piping Customized |
| Keyword | Rubber Expansion Joint Standard |
| Material | EPDM,NBR,NR, CR, FKM |
| Size | DN50 |
| Flange Standard | PN10/16, Class150#, Class300#, JIS5K, JIS10K |
| Color | Black |
| Shape | Round |
| Material Of Flange | Q235, SS304, SS316, SS316L |
| Surface Treatment | Cold Galvanized |
| Nominal Diameter | 32mm - 1800mm |
| Warranty Time | 12 months |
| In Stock | 20000 |
| Businese Type | Rubber expansion joints manufacturer |
| Flange Material | Carbon steel, SS304, SS316 |
| Main Frame | Nylon Cord Fabric |
| Resistance | Corrosion and abrasion resistant |
| Working Temperature | -20℃~150℃ |
| Feature | Small Volume |
| Warranty | 12 months |
| Deflection Angle | 10° - 15° |
| Axial Displacement | 6-18 mm |
| Company Type | Factory |
| Head Code | Round |
| Product Drawings | Offer |
| Connection Type | Flanged |
| Oem | Yes |
| Power | Manual |
| Rubber Joint Material | EPDM,NBR,CR,PTFE,etc. |
| Customized Support | OEM, ODM |
| Operating Medium | Water, Oil, Air, Chemicals |
| Applicable Media | Air, Water, Oil, Weak Acid and Alkali |
| Standard | DIN/ANSI/JIS/BS |
| Installation Manual | offer |
| Application | Pipeline systems |
| Temperature Rating | 200°F |
| Standard Of Flange | ANSI, DIN, JIS, EN, etc |
| Brand Name | JINGNING |
| Model Number | RLJS |
| Certification | CE，ISO |
| Place of Origin | China |
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Product Specification
| Payment Terms | Western Union,T/T,L/C,D/A,D/P,MoneyGram | Supply Ability | 10000 sets per week |
| Delivery Time | 5--15 working days | Packaging Details | carton or wooden |
| OEM/ODM | for 20 Year's Experience | Product name | Rubber Expansion Joint Standard High Pressure Resistant In Piping Customized |
| Keyword | Rubber Expansion Joint Standard | Material | EPDM,NBR,NR, CR, FKM |
| Size | DN50 | Flange Standard | PN10/16, Class150#, Class300#, JIS5K, JIS10K |
| Color | Black | Shape | Round |
| Material Of Flange | Q235, SS304, SS316, SS316L | Surface Treatment | Cold Galvanized |
| Nominal Diameter | 32mm - 1800mm | Warranty Time | 12 months |
| In Stock | 20000 | Businese Type | Rubber expansion joints manufacturer |
| Flange Material | Carbon steel, SS304, SS316 | Main Frame | Nylon Cord Fabric |
| Resistance | Corrosion and abrasion resistant | Working Temperature | -20℃~150℃ |
| Feature | Small Volume | Warranty | 12 months |
| Deflection Angle | 10° - 15° | Axial Displacement | 6-18 mm |
| Company Type | Factory | Head Code | Round |
| Product Drawings | Offer | Connection Type | Flanged |
| Oem | Yes | Power | Manual |
| Rubber Joint Material | EPDM,NBR,CR,PTFE,etc. | Customized Support | OEM, ODM |
| Operating Medium | Water, Oil, Air, Chemicals | Applicable Media | Air, Water, Oil, Weak Acid and Alkali |
| Standard | DIN/ANSI/JIS/BS | Installation Manual | offer |
| Application | Pipeline systems | Temperature Rating | 200°F |
| Standard Of Flange | ANSI, DIN, JIS, EN, etc | Brand Name | JINGNING |
| Model Number | RLJS | Certification | CE，ISO |
| Place of Origin | China | ||
| High Light | Industrial flange rubber expansion bellow ，Rubber expansion joint for thermal growth ，Single sphere rubber bellow for vibration damping | ||
Heavy-Duty Flanged Rubber Expansion Bellows
Product Description
Where rigid pipes fail, our Industrial Rubber Expansion Bellows step in. Designed as a flexible, high-density safeguard for high-stress fluid networks, this component neutralizes the intense kinetic energy and thermal elongation that threaten industrial infrastructure. By cushioning the system against relentless pump vibrations, it safeguards sensitive instrumentation and prevents costly flange failures. Available in both single and twin-sphere geometries, it combines robust chemical/thermal resistance with the installation flexibility of rotating flanges—delivering engineered longevity to modern processing plants.
Performance characteristics
1. Flexibility: Accommodates axial, lateral, and angular movements.
2. Durability: Reinforced rubber flexible joint provides long-lasting performance.
3. Corrosion Resistance: Resists aggressive environments and chemicals.
4. Noise & Vibration Reduction: Dampens vibrations and shock waves.
5. Ease of Installation & Maintenance: Compact design and standard flange connections facilitate installation and upkeep.
Product Specification
| Size | Length | Allowable Movements in Operation | ||||
| mm | inch | mm | Axial Compression mm | Axial Extension mm |
Transverse Movement mm |
Angular Deflection mm |
| 25 | 1 | 130/152 | 20 | 12 | 14 | 15° |
| 32 | 1 1/4 | 95/130/152 | 20 | 12 | 14 | 15° |
| 40 | 1 1/2 | 95/130/152 | 20 | 12 | 14 | 15° |
| 50 | 2 | 105/130/152 | 20 | 12 | 14 | 15° |
| 65 | 2 1/2 | 115/130/152 | 20 | 12 | 14 | 15° |
| 80 | 3 | 130/135/152 | 20 | 12 | 14 | 15° |
| 100 | 4 | 130/152 | 20 | 12 | 14 | 15° |
| 125 | 5 | 130/152/165 | 20 | 12 | 14 | 15° |
| 150 | 6 | 130/152/185 | 20 | 12 | 14 | 15° |
| 200 | 8 | 130/152/210 | 20 | 12 | 14 | 15° |
| 250 | 10 | 130/203/230 | 20 | 12 | 14 | 15° |
| 300 | 12 | 130/203/245 | 25 | 16 | 22 | 15° |
| 350 | 14 | 200/255 | 25 | 16 | 22 | 15° |
| 400 | 16 | 200/255 | 25 | 16 | 22 | 15° |
| 450 | 18 | 200/255 | 25 | 16 | 22 | 15° |
| 500 | 20 | 200/255 | 25 | 16 | 22 | 15° |
| 600 | 24 | 260 | 25 | 16 | 22 | 15° |
| 700 | 28 | 260 | 25 | 16 | 22 | 15° |
| 800 | 32 | 260 | 25 | 16 | 22 | 15° |
| 900 | 36 | 260 | 25 | 16 | 22 | 15° |
| 1000 | 40 | 260/300 | 25 | 16 | 24 | 15° |
| 1100 | 44 | 300 | 25 | 16 | 24 | 15° |
| 1200 | 48 | 300 | 25 | 16 | 24 | 15° |
|
Note: If the medium is oil, acidic or alkaline substances, and there are special requirements for the working temperature, you can customize it by sending a letter or drawing. Please specify when ordering |
Product Details
Production Flow
|
1.Raw material Top level CR/EPDM/NBR rubber raw materials, No recycled rubber |
2.Plasticating and mixing Special Formulation for better Bending with Nylon,For Better Strength,Sealing |
3.Workblanks wraping Cooper plated steel wire reinforcement prevent pull off |
|
4.Vulcanizing Automatic vulcanization machine ensure vulcanization time and pressure |
5.Inspecting |
6. Packaging |
Application
Rubber Expansion Joint Standard are widely used in various fields, including construction, chemical industry, shipbuilding, tap water, gas, chemical pipelines, petroleum pipelines, food pipelines, air conditioning pipelines, and sewage treatment.
Our Services
1.24-hour online
2.Free samples provided
3.Support customization
4.Provide drawings
5.Multiple payment styles to choose from
6.Factory inspection (material, specifications, quantity, pressure, packaging)
7.Long warranty period
8.Suitable packaging for transportation
Our Customer
Certificate
FAQ
Q1: Can this expansion joint compensate for misalignment in my piping layout?
Yes, it is specifically designed to handle lateral, angular, and axial offsets. However, it is important to ensure the misalignment does not exceed the maximum rated limits of the bellows to prevent premature wear on the rubber walls.
Q2: What is the maximum pressure rating for this flanged connector?
Standard units typically handle PN10 or PN16 (1.0 to 1.6 MPa), but the exact burst pressure depends on the reinforcement layers. For high-pressure environments, we provide specialized high-tensile models with multi-strand steel wire integration.
Q3: Is it possible to install this bellows in a vertical pipeline?
Absolutely. It can be installed both horizontally and vertically. For vertical installations, ensure the piping is properly supported above and below the joint so that the bellows itself does not bear the total weight of the fluid column.
Q4: How does the temperature of the medium affect the rubber's lifespan?
Higher temperatures naturally accelerate the aging of elastomers. While our EPDM units can withstand up to 115°C, continuous operation at peak temperature may reduce flexibility over time. We recommend choosing a material grade that exceeds your average operating temperature by at least 20%.
Q5: Why does the flange rotate freely on the rubber bellows?
This is a "Floating Flange" design. It is intentional to allow for easy alignment with the bolt holes of the fixed pipeline flanges, significantly reducing installation time and preventing the rubber from twisting during the tightening process.
Company Details
Business Type:
Manufacturer
Year Established:
2004
Total Annual:
30000000-50000000
Employee Number:
100~200
Ecer Certification：
Verified Supplier
Jingning is a specialist company in expansion joints for pipe equipment. Since 2004 we stand for values which are typical of a family owned company: the spirit of innovation, reliability, continuity and flexibility in thought and action.We are a reliable supplier to our customers who count... Jingning is a specialist company in expansion joints for pipe equipment. Since 2004 we stand for values which are typical of a family owned company: the spirit of innovation, reliability, continuity and flexibility in thought and action.We are a reliable supplier to our customers who count...
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