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 Expansion joint, expansion joint manufacturer, Gongyi Unicom pipeline factory
[telescopic series]
Telescopic device
SSQ cast iron expansion device
Ductile iron expansion device
CS type thermal pipeline expansion device
SF steel expansion device
RS type flexible sleeve type expansion device
Ssqp both ends flange limit pressure plate extension
Sqx-a casing expansion joint
Sqx-b casing expansion joint
Sqx-c casing expansion joint
[transmission joint series]
Force transfer joint
Vssjafg single flange loose sleeve force transfer connection
Vssjaf double flange loose sleeve force transfer connection
Vssjafc detachable double flange loose sleeve transmission
CF type single flange loose sleeve force transfer joint
C2F double flange loose sleeve force transfer joint
Cc2f detachable double flange loose sleeve transmission
Beijing force transfer joint
Shanghai force transfer joint
Tianjin transfer joint
[waterproof casing series]
Waterproof casing
Stainless steel waterproof casing
Type a rigid waterproof casing
Type B rigid waterproof casing
C-type rigid waterproof casing
02s404 rigid waterproof casing
02s404 flexible waterproof casing
07fs02 rigid closed casing
07fs02 flexible sealing sleeve
Special airtight casing for civil air defense basement
[compensator series]
Compensator
TWB / ztwb oil injected DC medium
Silicone skin of nonmetal compensator
Jr type general purpose metal hose
stainless steel bellows
QB type spherical compensator
Directly buried corrugated compensator
Axial inward pressure bellows expansion joint
Bellows expansion joint with axial compression
Bellows expansion joint of transverse small tie rod
[rubber joint series]
Rubber joint
Jgd single ball flexible rubber joint
Jgd double ball flexible rubber joint
KXT single ball flexible rubber joint
KXT double ball flexible rubber joint
Gjq (x) - SF double sphere flexible rubber
Gjq (x) - DF - II single sphere is flexible
Anti pull off flexible rubber joint
Jgd-b flexible double ball wire connecting rubber
Fan coil connection
[cold rolled flange series]
Cold rolled flange
[expansion joint series]
Double flange limit expansion joint
Vssja-1 single flange limited expansion joint
B2F double flange loose sleeve limited expansion joint
BF single flange loose sleeve limited expansion joint
Ay type gland type loose sleeve expansion joint
Ssjb-3 (by) gland type loose sleeve limit
Ssjb-2 (by) gland type loose sleeve limit
Welded expansion joint
Ssjb (Ay) gland type loose sleeve expansion and contraction
Gfjh double flange steel multiple joint
Telescopic series

Corrugated expansion joint

Corrugated expansion joint is also known as expansion joint, or expansion joint. It is composed of bellows (an elastic element) and accessories such as end pipe, bracket, flange, conduit and so on.
The corrugated expansion device belongs to a kind of compensation element. The effective expansion and contraction deformation of bellows is used to absorb the size change caused by thermal expansion and cold contraction of pipelines, pipes and vessels, or to compensate the axial, transverse and angular displacement of pipelines, conduits and containers. It can also be used for noise reduction and vibration reduction. It is widely used in modern industry.

National 24-hour sales hotline: 0371-64031268

Corrugated expansion joint is also known as expansion joint, or expansion joint. It is composed of bellows (an elastic element) and accessories such as end pipe, bracket, flange, conduit and so on.
The corrugated expansion device belongs to a kind of compensation element. The effective expansion and contraction deformation of bellows is used to absorb the size change caused by thermal expansion and cold contraction of pipelines, pipes and vessels, or to compensate the axial, transverse and angular displacement of pipelines, conduits and containers. It can also be used for noise reduction and vibration reduction. It is widely used in modern industry.

Standard of corrugated expansion device:
New standard (GB / 127t / 1999)
Standard name of bellows expansion joint: General specification for metal bellows expansion joint
Standard implementation date: March 1, 2000 (new standard implementation date: February 1, 2009)
Issuing department: State Bureau of quality and technical supervision
Content introduction: this standard specifies the definition, classification, requirements, test methods, inspection rules, marks, packaging, transportation and storage of metal bellows expansion joints. This standard is applicable to the design, manufacture and inspection of circular expansion joints installed in pipes whose flexible parts are integrally formed non reinforced U-shaped, reinforced U-shaped and ∩ shaped bellows. The design, manufacture and inspection of expansion joints for pressure vessels can also be referred to.
Expansion joints: expansion joints
Special materials for bellows expansion are as follows:
1. Super austenitic special stainless steel: 254SMO, 904L, AL6XN
2. Duplex stainless steel: 2205 duplex steel (S31803)
3. Nickel base alloy steel: Incoloy800 / 800H / 800ht / 840 / 825, inconel600 / 601 / 690 / 625 / X-750 Hastelloy C-276 / C-22 / x, MONEL400 / K500
4. Pure nickel: N4, N6 (Ni200, ni201)
5. Titanium plate for stamping: GR1, Gr2, TA1, TA2
6. Austenitic stainless steel: SUS304, SUS304L, SUS316, SUS316L, SUS310S, SUS321, sus316ti

Precautions for installation of corrugated compensator
1. Before installation, check the model, specification and pipeline configuration of corrugated compensator, which must meet the design requirements.
2. For the compensator with inner sleeve, attention should be paid to make the direction of inner sleeve cylinder consistent with the direction of medium flow, and the hinge rotation plane of hinge type compensator should be consistent with the displacement rotation plane.
3. For the compensator that needs to be "cold tight", the auxiliary components used for pre deformation should be removed after the pipeline installation.
4. It is strictly forbidden to use the deformation method of corrugated compensator to adjust the installation out of tolerance of the pipeline, so as to avoid affecting the normal function of the compensator, reducing the service life and increasing the load of piping, equipment and supporting components.
5. During the installation, welding slag is not allowed to splash on the surface of the wave shell, and the wave shell is not allowed to suffer other mechanical damage.
6. After the piping system is installed, the Yellow auxiliary positioning components and fasteners used for installation and transportation on the bellows compensator shall be removed as soon as possible, and the limiting device shall be adjusted to the specified position according to the design requirements, so that the pipeline system has sufficient compensation capacity under environmental conditions.
7. All moving elements of corrugated compensator shall not be stuck or restricted by external components, and normal operation of each moving part shall be ensured.
8. During the water pressure test, the secondary fixed pipe support with corrugated compensator should be reinforced to prevent the pipeline from moving or rotating. For the compensator used in gas medium and its connecting pipeline, it is necessary to add temporary support when filling water. The content of 96 chloride ion in the cleaning solution for water pressure test shall not exceed 25ppm.
9. After the hydraulic test, the water in the wave shell should be drained as soon as possible, and the inner surface of the wave shell should be dried quickly.
10. The thermal insulation materials in contact with bellows of corrugated compensator shall be chlorine free

Technical parameters:


Diameter dn

wave number

Pressure rating MPa

The filter tube is effective

Area cm two

Maximum outside diameter ruler

Inch mm

length

zero point two five

zero point six

one

one point six

two point five

Axial compensation mm / stiffness n / mm

Flange JDZ / F (mm)

Nozzle JDF / J (mm)
thirty-two
eight
25/21
22/26
20/26
18/63
15/98
sixteen
two hundred and twenty-five
160/250
264/280
sixteen
50/11
46/14
41/14
36/32
31/47
244/291
316/321
forty
eight
25/28
22/44
20/44
18/89
15/106
twenty-three
two hundred and forty-four
164/259
269/289
sixteen
50/14
46/22
41/22
36/45
31/55
230/304
319/334
fifty
eight
25/30
22/51
20/70
18/70
15/138
sixty-seven
two hundred and fifty-nine
172/276
282/306
sixteen
50/16
46/26
41/35
36/35
31/70
240/342
347/372
sixty-five
eight
33/28
30/35
26/44
22/55
19/68
fifty-five
two hundred and seventy
215/294
300/322
twelve
42/16
38/22
38/32
34/40
29/50
260/334
340/362
eighty
eight
40/20
36/26
34/33
28/41
24/54
eighty-one
two hundred and eighty-four
240/338
344/366
ten
53/14
49/17
49/21
43/26
38/33
270/368
374/390
one hundred
six
45/47
45/60
40/75
35/93
29/117
one hundred and twenty-one
three hundred and four
235/317
323/345
ten
76/26
74/32
64/40
57/50
49/63
305/381
387/409
one hundred and twenty-five
five
48/38
42/47
38/59
34/74
29/92
one hundred and eighty
three hundred and thirty-four
282/314
316/342
nine
85/23
77/29
66/36
58/45
50/56
382/386
388/414
one hundred and fifty
five
49/42
44/50
40/62
34/78
29/97
two hundred and fifty-seven
three hundred and sixty-four
282/389
338/367
eight
79/34
71/43
64/51
54/59
46/65
356/399
402/427
two hundred
four
52/49
46/55
42/68
38/78
34/111
four hundred and seventy-nine
four hundred and forty-two
280/384
348/372
six
73/31
65/44
59/52
53/58
48/78
340/402
402/426
two hundred and fifty
four
72/30
65/34
59/42
52/45
47/55
seven hundred and ninety-six
five hundred and seven
315/379
415/379
six
108/16
97/21
87/35
79/39
71/47
393/459
493/399
three hundred
four
72/51
65/55
59/59
52/65
47/71
one thousand one hundred and five
five hundred and sixty-two
366/427
466/467
six
108/32
97/35
87/37
79/41
71/45
464/525
564/565
three hundred and fifty
four
72/58
65/62
59/67
52/74
47/81
one thousand three hundred and seven
six hundred and twenty-two
397/452
497/492
six
108/38
97/41
87/44
79/48
71/47
509/564
609/604
four hundred
four
72/54
65/58
59/62
52/68
47/75
one thousand six hundred and eleven
seven hundred
412/478
512/518
six
108/36
97/39
87/43
79/47
71/52
522/588
622/628
four hundred and fifty
four
108/32
97/35
87/37
79/41
71/45
one thousand nine hundred and seventy-two
seven hundred and sixty
503/498
503/523
six
162/20
145/22
131/23
118/25
106/28
503/658
603/648
five hundred
four
108/59
97/64
87/68
79/75
71/82
two thousand four hundred and forty-five
eight hundred and thirty-five
431/523
531/554
six
162/34
145/37
131/39
118/43
106/48
531/655
631/742
six hundred
four
108/74
97/80
87/85
79/94
71/103
three thousand five hundred and thirty-four
nine hundred and eighty
478/548
578/588
six
162/42
145/45
131/49
118/53
106/60
658/679
758/781
seven hundred
four
108/67
97/72
87/77
79/85
71/95
four thousand seven hundred and seventeen
one thousand one hundred and ten
four hundred and ninety
five hundred and ninety
six
162/42
145/45
131/49
118/53
106/60
six hundred and ninety
seven hundred and ninety
eight hundred
four
120/88
108/95
102/102
94/112
82/123
five thousand eight hundred and twenty-two
one thousand two hundred and sixty-five
five hundred and two
six hundred and two
six
183/67
164/72
156/77
144/85
125/93
six hundred and ten
seven hundred and ten
nine hundred
four
120/84
108/90
102/97
94/107
82/117
seven thousand six hundred and twenty
one thousand one hundred and eighty-six
six hundred and eighty-nine
six
183/60
164/65
156/69
144/76
125/84
eight hundred and fifty
one thousand
four
120/90
108/98
102/105
94/116
nine thousand and forty-three
one thousand two hundred and eighty-six
six hundred and ninety-two
six
183/59
164/65
156/71
144/81
eight hundred and fifty-five

Company name: Gongyi Unicom pipeline factory address: Xicun Industrial Zone, Gongyi City, Henan Province contact person: Manager Pang Tel: 0371-64031268
Mobile phone: 15617617287 / 15038001853 Fax: 0371-64031728 e_ mail:gyltgd@126.com Yu ICP Bei No. 12019710-5
Professional expansion joint, expansion joint, expansion joint, pipe expansion, limit expansion joint manufacturer Copyright: Gongyi Unicom pipeline factory