Cixi Fly Pipe Equipment Co.,Ltd

Contact:Leo Wu

Tel:+86-186-58290429

Fax:+ 86-574-63894821

Email:sales@cxfpe.com

http://www.cxfpe.com

Universal Metal Expansion Joint

    

Universal Metal Expansion Joint

The bellows of a metal expansion joint is made up of one or more convolutions. The bellows provide stable, long-lasting, solutions to many problems involving harmonics, vibration, and high temperature expansion. The joint must be designed strong enough to accommodate the system design pressure, as well as, flexible enough to accept the design deflections for a calculated number of cycles.

Metal expansion joints are being successfully utilized in refineries, chemical plants, fossil and nuclear power systems, heating and cooling systems, and cryogenic plants. Service conditions have ranged from pressures of 25 microns to 1,000 PSIG and -420°F to +1800°F. These types of expansion joints are a highly engineered product and can perform their intended function safely and reliably.

Unlike most commonly used piping components, bellows are constructed of a relatively thin gauge material in order to provide the flexibility needed to absorb mechanical and thermal movement expected in service.

For selection of the proper metal expansion joint, the following steps should be followed:

1. Select applicable pipe size

2. Select applicable pressure range.

3. Determine type and amount of movement to be absorbed.

4. Select bellows (single or dual and number of convolutions) to satisfy deflection requirements.

5. Determine end fittings and hardware required.

Warning:

Expansion joints may operate in pipelines or equipment carrying fluids and/or gases at elevated temperatures and pressures. Precaution should be taken to insure proper installation and regular inspection. Care is required to protect personnel in the event of leakage or splash.


DN
mm
No. of ArchAxial displacement mm/Stiffness N/mm
Effective Area 
cm2
Max OD mmLength 
0.25MPa0.6MPa1.0MPa1.6MPa2.5MPaFlange JDZ/F(mm)Weld End JDZ/J(MM)
32825/2122/2620/2618/6315/9816110160/250264/210
1650/1146/1441/1436/3231/47220224/291346/320
40825/2822/4420/4418/8915/10623130164/259269/260
1650/1446/2241/2236/4531/55240230/304319/400
50825/3022/5120/7018/7015/13837150172/276282/230
1650/1646/2641/3536/3531/70260240/342347/450
65833/2830/3526/4422/5519/6855170215/294300/260
1242/1638/2238/3234/4129/50280260/334340/470
80840/2036/2634/3328/4134/5481200240/338344/260
1053/1449/1749/2143/2638/33230270/368374/300
100845/4745/6040/7535/9329/117121220235/317323/280
1076/2674/3264/4057/5049/63260305/381387/320
125648/3842/4738/5934/7429/92180250282/314316/320
885/2377/2966/3658/4550/56290382/386388/360
150649/4244/5040/6234/7829/97257250282/339338/320
879/3471/4364/5154/5946/65290356/399402/360
200652/4946/5542/6838/7834/111479300280/348348/370
873/3165/4459/5253/5848/78340340/402402/420
250672/3065/3459/4252/4547/55769300315/379415/420
8108/1697/2187/3579/3971/47360393/459493/460
300672/5165/5559/5952/6547/711105340366/427466/480
8108/3297/3587/3779/4171/45400464/525564/520
350672/5865/6259/6752/7447/811307340397/452497/480
8108/3897/4187/4479/4871/47420509/564609/540
400672/5465/5859/6252/6847/751611340412/478512/480
8108/3697/3987/4379/4771/52420522/588622/560
4506108/3297/3587/3779/4171/451972340403/498503/500
8162/20145/22131/23118/25106/28450503/658603/590
5006108/5997/6487/6879/7571/822445340431/523531/500
8162/34145/37131/39118/43106/48450531/665631/600
6006108/7497/8087/8579/9471/1033534380478/548578/540
8162/42145/45131/49118/53106/60500658/679758/640
7004108/6797/7287/7779/8571/9547171110460550
6162/42145/45131/49118/53106/60580670
8004120/88108/95102/10294/11282/12358221265462560
6186/67164/72156/77144/85125/93560600
9004120/84108/90102/9794/10782/11776201186462620
6183/60164/65156/59144/76125/84610720
10004120/91108/98102/10594/116 90431286480692
6183/59164/65156/71144/81 640790