Stainless Steel Flange Connected Expand Flexible Metal Bellow Expansion Joint
A stainless steel flange-connected expandable flexible metal bellows expansion joint is a crucial component in piping systems, designed to absorb thermal expansion, vibrations, and misalignments while maintaining a leak-proof connection.
Key Components & Features:
1.Metal Bellows
Made of stainless steel (SS304, SS316, etc.) for corrosion resistance and durability.
Flexible convolutions allow movement (axial, lateral, angular) to compensate for thermal expansion/contraction.
2.Flange Connection
Typically features ANSI, ASME, DIN, or EN flanges for easy bolting to pipelines.
Ensures a strong, leak-proof seal under pressure.
3.Flexibility & Movement Absorption
Axial Compression/Extension – Handles pipe lengthening/shortening due to temperature changes.
Lateral Offset – Accommodates side-to-side misalignment.
Angular Deflection – Adjusts for minor piping angular shifts.
4.Pressure & Temperature Resistance
Suitable for high-pressure systems (varies by design).
Operates in a wide temperature range (from cryogenic to high heat).
5.Optional Features
Inner liner – Reduces turbulence and erosion.
Cover (shroud) – Protects bellows from external damage.
Limit rods – Prevent over-extension under pressure.
Advantages:
✔ Long service life (resists fatigue and corrosion).
✔ Minimal maintenance (no moving parts).
✔ Reduces stress on pipes, valves, and pumps.
Would you like help selecting the right specifications (size, pressure rating, flange type) for your application?
| ominal Diameter (mm) | Wave number | Pressure level | Effective area of bellows | Maximum outer diameter |
| 0.25 | 0.6 | 1.0 | 1.6 | 2.5 |
| Axial compensation/mm,Stiffness(N/mm) |
| 32 | 8 | 25/21 | 22/26 | 20/26 | 18/63 | / | 16 | 225 |
| 32 | 16 | 50/11 | 46/14 | 41/14 | 36/32 | / | 16 | 225 |
| 40 | 8 | 25/28 | 22/24 | 20/44 | 18/89 | 15/98 | 23 | 244 |
| 40 | 16 | 50/14 | 46/22 | 41/22 | 36/45 | 31/47 | 23 | 244 |
| 50 | 8 | 25/30 | 22/51 | 20/70 | 18/70 | 15/106 | 37 | 259 |
| 50 | 16 | 50/16 | 46/26 | 41/35 | 36/35 | 31/55 | 37 | 259 |
| 65 | 8 | 33/28 | 30/35 | 26/44 | 22/55 | 15/138 | 55 | 270 |
| 65 | 12 | 42/16 | 38/22 | 38/32 | 34/40 | 31/70 | 55 | 270 |
| 80 | 8 | 40/20 | 36/26 | 34/33 | 28/41 | 19/68 | 81 | 284 |
| 80 | 10 | 53/14 | 49/17 | 49/21 | 43/26 | 29/50 | 81 | 284 |
| 100 | 6 | 45/47 | 45/60 | 40/75 | 35/93 | 25/54 | 121 | 304 |
| 100 | 10 | 76/26 | 74/32 | 64/40 | 57/50 | 38/33 | 121 | 304 |
| 125 | 5 | 48/38 | 42/47 | 38/59 | 34/74 | 29/117 | 180 | 334 |
| 125 | 9 | 85/23 | 77/29 | 66/36 | 58/45 | 49/63 | 180 | 334 |
| 150 | 5 | 49/42 | 44/50 | 40/62 | 34/78 | 29/92 | 257 | 364 |
| 150 | 8 | 79/34 | 71/43 | 64/51 | 54/59 | 50/56 | 257 | 364 |
| 200 | 4 | 52/49 | 46/55 | 42/68 | 38/78 | 29/97 | 479 | 442 |
| 200 | 6 | 73/31 | 65/44 | 59/52 | 53/58 | 46/65 | 479 | 442 |
Factory Show
Applications:
HVAC Systems – Absorbs thermal movement in heating/cooling lines.
Industrial Piping – Used in chemical plants, power generation, and oil refineries.
Exhaust Systems – Compensates for vibration and thermal shifts.
Marine & Aerospace – Resists corrosion in harsh environments.
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Stainless Steel Flange Expansion Joint with Metal Bellows Images
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