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China Expansion Joints Supplier - Customized Factory Solutions from DN32 to DN4000 with Various Connectors and Threads
Size
DN32 to DN4000, also can be customized
Connector approval
Flange, flange type Threaded, Union type Rubber Joint, also can be customized
Flange drilled
BS, DIN, ANSI, JIS or others provided drawing samples
Threads
DIN, BSPT, BSP, NPS, NPT, Metric, (ISO7/1, DIN 2999, ANSI B1.20.1)
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 standard expansion joints are available in sizes ranging from DN32 to DN4000. Custom sizes can also be engineered and manufactured to meet your specific piping requirements.
What standards do the flange drillings and threads follow?
Flange drillings are compatible with BS, DIN, ANSI, and JIS standards, or can be customized based on provided drawing samples. Threads conform to DIN, BSPT, BSP, NPS, NPT, Metric (including ISO7/1, DIN 2999, and ANSI B1.20.1) standards.
What types of rubber materials are used for the joint body?
Depending on the application medium and environment, the joint 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.
How do expansion joints protect rigid piping systems?
They absorb axial, transverse, and angular movements, improve thermal stability, relieve system strain caused by thermal changes or pumping surges, reduce mechanical noise, and compensate for pipe misalignment.
What are the typical applications for these expansion joints?
They are widely applied in basic engineering projects including chemical engineering, water supply and drainage, construction, petroleum, heavy and light industries, refrigeration, sanitation, fire protection, and electric power.
What materials are used for the flanges?
Flanges are typically manufactured using carbon steel (galvanized for corrosion resistance) or stainless steel, ensuring high durability and pressure resistance.