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China Expansion Joints Suppliers - Customizable Factory Flanges, Rubber Joints & Threaded Connectors
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Size: DN32 to DN4000, also can be customized
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Connector approval: Flange, flange type Threaded, Union type Rubber Joint, also can be customized
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Flange drilled: BS, DIN, ANSI, JIS or others provided drawing samples
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Threads: DIN, BSPT, BSP, NPS, NPT, Metric, (ISO7/1, DIN 2999, ANSI B1.20.1)
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Type: EPDM, NBR, NR, PTFE, Polarity rubber Body, Single arch or double arch, carbon steel galvanized flange, flange end and threaded end, flange: Carbon steel or stainless steel
Application: It is widely used in chemical engineering, construction, water supply, drainage, petroleum, light and heavy industries, refrigeration, sanitation, water heating, fire protection, electric power and other basic projects. According to different materials can be made into acid, alkali, corrosion, oil, high temperature, radiation, wear resistance, aging and other varieties, to adapt to a variety of media and environment.
Expansion Joints Feature
- Small volume, light in weight, very good flexibility, convenience installation and maintenance.
- Transverse displacement, axial displacement, angular displacement.
- Reduce noise, shock absorption.
Expansion joints are specially engineered products inserted in a rigid piping system to achieve one or more of the following:
- Absorb movement
- Improved thermal stability
- Relieve system strain due to thermal change, load stress, pumping surges, wear or settling
- Reduce mechanical noise
- Compensate for misalignment
- Eliminate electrolysis between dissimilar metals
Expansion Joints General Data
| Size | ΦD1 | ΦD2 | N-Φd | D | d | Extension | Compression | Horizontal displacement (mm) | Weight(kg) |
|---|---|---|---|---|---|---|---|---|---|
| DN32 | 140 | 100 | 4-18 | 95 | 16 | 6 | 9 | 9 | 3.4 |
| DN40 | 150 | 110 | 4-18 | 95 | 18 | 6 | 10 | 9 | 4 |
| DN50 | 165 | 125 | 4-19 | 105 | 18 | 7 | 10 | 10 | 5.5 |
| DN65 | 185 | 145 | 4-19 | 115 | 20 | 7 | 13 | 11 | 6.7 |
| DN80 | 200 | 160 | 8-19 | 135 | 20 | 8 | 15 | 12 | 7.7 |
| DN100 | 220 | 180 | 8-19 | 150 | 22 | 10 | 19 | 13 | 9.4 |
| DN125 | 250 | 210 | 8-19 | 165 | 24 | 12 | 19 | 13 | 12.7 |
| DN150 | 285 | 240 | 8-23 | 180 | 24 | 12 | 20 | 14 | 15.8 |
| DN200 | 340 | 295 | 12-23 | 210 | 24 | 16 | 25 | 22 | 20 |
| DN250 | 405 | 355 | 12-28 | 230 | 28 | 16 | 25 | 22 | 29.22 |
| DN300 | 460 | 410 | 12-28 | 245 | 28 | 16 | 25 | 22 | 32.8 |
| DN350 | 520 | 470 | 16-28 | 255 | 28 | 16 | 25 | 22 | 41.3 |
| DN400 | 580 | 525 | 16-31 | 255 | 30 | 16 | 25 | 22 | 55.6 |
| DN450 | 640 | 585 | 20-31 | 255 | 30 | 16 | 25 | 22 | 61.8 |
| DN500 | 715 | 650 | 20-34 | 255 | 32 | 16 | 25 | 22 | 69.4 |
| DN600 | 840 | 770 | 20-37 | 260 | 36 | 16 | 25 | 22 | 96.8 |
Chamber Filter Press Plate
Frequently Asked Questions (FAQ)
What size ranges are available for the expansion joints?
Our expansion joints are available in standard sizes ranging from DN32 to DN4000. Custom sizes can also be engineered and manufactured to meet your specific application requirements.
Which rubber materials are used in the construction of the joint body?
Depending on the medium and operating conditions, the rubber body can be fabricated from EPDM, NBR, NR, PTFE, or Polarity rubber. These materials offer resistance to acids, alkalis, corrosion, oil, high temperatures, and wear.
What types of connections and flange drillings do you support?
We support multiple connection types including Flange, Threaded, and Union type Rubber Joints. Flanges can be drilled according to BS, DIN, ANSI, JIS, or other standards based on your provided drawings and samples.
How do expansion joints protect piping systems?
They absorb axial, transverse, and angular movements, reduce system strain caused by thermal changes, absorb pumping surges, compensate for misalignment, and minimize mechanical noise and vibration.
In what industries are these expansion joints typically applied?
They are widely applied in chemical engineering, construction, municipal water supply and drainage, petroleum, refrigeration, sanitation, fire protection, and electric power generation.