Expansion joint bellows (adjusting long)

Short Description:

The expansion joint bellows belongs to a compensation element. The effective expansion deformation of bellows is used to absorb the size changes of pipelines, conduits and containers caused by thermal expansion and cold contraction, or to compensate the axial, transverse and angular displacements of pipelines, conduits and containers. It can also be used for noise reduction and vibration reduction. It is widely used in modern industry.


Product Detail

Product Tags

Feature

1. Compensating thermal expansion: It can compensate for many directions, which is much better than the metal compensator which can only be compensated by single mode.

2. Compensation for installation error: Because the system error is unavoidable in the process of pipeline connection, the fiber compensator can better compensate the installation error.

3. Noise and vibration attenuation: Fiber fabrics and insulation cotton have the functions of sound absorption and vibration isolation, which can effectively reduce the noise and vibration of boilers, fans and other systems.

4. No back thrust: Because the main material is fiber fabric, the transfer is weak. The use of fiber compensator can simplify the design, avoid using large supports, and save a lot of material and labor.

5. Good resistance to high temperature and corrosion: Fluoro plastics and silicone materials have good resistance to high temperature and corrosion.

6. Good sealing performance: There is a relatively perfect production and assembly system, and the fiber compensator can ensure no leakage.

7. Light weight, simple structure, easy installation and maintenance.

8. The price is lower than that of metal compensator and the quality is better than that of imported products.

Technical parameters

  inside nominal diameter DN(mm)    DN50-300(1inch=25.4mm)
  Work stress    ≤1.6 MPa
  Working temperature    0-80℃
  Body material    Nodular cast iron
  Product description    GB/T 12777-2008

Expansion joint bellows

Main dimensions

DN Number of wave Pressure grade(Mpa) Available area(cm2) Max size(mm)  Length(mm)
0.25 0.6 1 1.6 2.5 Flange JDZ/F Pipe JDZ/F
Axial compensation mm/  N/mm
  32  8  25/21 22/26  20/26  18/63  15/98    16  110  160/250 264/210 
 16  50/11 46/14  41/14  36/32  31/47   220  244/291 316/320 
  40  8  25/28 22/44  20/44  18/89  15/10    23  130  164/259 269/260 
 16  50/14 46/22  41/22  36/45  31/55   240  230/304 319/400 
  50  8  25/30 22/51  20/70  18/70  15/13    37  150  172/276 282/230 
 16  50/16 46/26  41/35  36/35  31/70   260  240/342 347/450 
  65  8  33/28 30/35  26/44  22/55  19/68    55  170  215/294 300/260 
 12  42/16 38/22  38/32  34/40  29/50   280  260/334 340/470 
  80  8  40/20  36/26  34/33  28/41  24/54   81  200  240/338 344/260 
 10  53/14  49/17  49/21  43/26  38/33  230  270/368 374/300 
  100  6  45/47 45/60  40/75  35/93  29/11    121  220  235/317 323/280 
 10  76/26 74/32  64/40  57/50  49/63   260  305/381 387/320 
  125  5  48/38 42/47  38/59  34/74  29/92    180  250  282/314 316/320/600 
 9  85/23 77/29  66/36  58/45  50/56   290  382/386 388/360 
  150  5  49/42 44/50  40/62  34/78  29/97    257  250  282/389 338/320 
 8  79/34 71/43  64/51  54/59  46/65   290  356/399 402/360 
  200  4  52/49 46/55  42/68  38/78  34/11    479  300  280/384 348/370/200 
 6  73/31 65/44  59/52  53/58  48/78   340  340/402 402/420 
  250  4  72/30  65/34  59/42  52/45  47/55   796  330  315/379 415/420/300 
 6  108/16 97/21  87/35  79/39  71/47   360  393/459 493/460 
  300  4  72/51 65/55  59/59  52/65  47/71    1105  340  366/427 466/480 
 6  108/32 97/35  87/37  79/41  71/45   400  464/525 564/520 
  350  4  72/58 65/62  59/67  52/74  47/81    1307  340  397/452 497/480 
 6  108/38  97/41  87/44  79/48  71/47  420  509/564 609/540 
  400  4  72/54 65/58  59/62  52/68  47/75    1611 340  412/478 512/480/430 
 6  108/36 97/39  87/43  79/47  71/52   420  522/588 622/560 

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