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Welcome to the official website of Henan Gongyi Unicom pipeline factory!
 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

Telescopic device

Expansion joint is also called expansion joint, expansion joint, compensator and expansion joint. The expansion device can be axially retracted within a certain range, and can also overcome the offset caused by different axial joints of the pipeline in a certain angle. It can greatly facilitate the installation and disassembly of the valve pipeline. It can freely expand and expand in the allowable expansion amount of the pipeline. Once the maximum expansion amount is exceeded, it will play a limit to ensure the safe operation of the pipeline. In order to ensure the safe operation of the pipeline, it has the following functions: compensating the axial, transverse and angular thermal deformation of the absorption pipeline; absorbing the equipment vibration to reduce the impact of equipment vibration on the pipeline; absorbing the deformation of the pipeline caused by earthquake and ground subsidence.

National 24-hour sales hotline: 0371-64031268

The prospect and significance of expansion device
What are the benefits of using an extender?
Development prospect of expansion device
We must keep up with the international advanced level, develop independent innovation products, and develop in the direction of high quality, high level and full automation, so that the pipeline industry will develop and grow. The expansion device is mainly used to ensure the safe operation of the pipeline and has the following functions:
It can compensate axial, transverse and angular thermal deformation of absorption pipe, absorb equipment vibration and reduce the influence of equipment vibration on pipeline;
It can absorb the deformation of pipeline caused by earthquake and ground subsidence.
Therefore, it is used to transport sea water, fresh water, cold and hot water, drinking water, domestic sewage, crude oil, fuel oil, lubricating oil, product oil, air, gas, steam with temperature not higher than 250 ℃ and granular powder.

Brief introduction of expansion device:
Expansion joint is also called expansion joint, expansion joint, compensator and expansion joint. The expansion device can be axially retracted within a certain range, and can also overcome the offset caused by different axial joints of the pipeline in a certain angle. It can greatly facilitate the installation and disassembly of the valve pipeline. It can freely expand and expand in the allowable expansion amount of the pipeline. Once the maximum expansion amount is exceeded, it will play a limit to ensure the safe operation of the pipeline. In order to ensure the safe operation of the pipeline, it has the following functions: compensating the axial, transverse and angular thermal deformation of the absorption pipeline; absorbing the equipment vibration to reduce the impact of equipment vibration on the pipeline; absorbing the deformation of the pipeline caused by earthquake and ground subsidence.
1. The product provides great convenience for the installation and replacement of various water supply and drainage pipelines, water towers, pumps, water meters and valves, and plays a good role in regulating the expansion and contraction of long-distance pipelines due to temperature difference.
2. There are two types of pipes for the product: metal type and rubber type (for example, gsq-j (metal) and gsq-x (rubber)) for Zhonglin water supply company, and the metal types are divided into cast iron, galvanized steel and steel. The working pressure is divided into pn6, PN10 and PN16.
3. Before installation, loosen the pressure plate bolt, pull the product to the installation length, and then tighten it with diagonal method. Do not press off. If it is used overhead, the corresponding fixed support must be installed at both ends.
4. The flange connection adopts gb4216.3-4126.5 standard.
5. If other specifications are selected, it can be customized.

Application scope and application of the expansion joint:
Applicable media:
This product is suitable for transportation of seawater, fresh water, cold and hot water, drinking water, domestic sewage, crude oil, fuel oil, lubricating oil, product oil, air, gas, steam with temperature not higher than 250 ℃ and particle powder.
Purpose:
The expansion joint is a new product connecting the pump, valve, pipeline and other equipment with the pipeline. It is connected with the whole bolt to make it become a whole, and has a certain displacement, which is convenient for installation. It can bear the axial pressure of pipeline. When the pump is installed and maintained, it can not only improve the efficiency of the installation of the pump, but also improve the efficiency of the installation of the pump.

Precautions for installation and use of expansion device:
1. The model, specification and pipeline configuration of the expansion device should be checked before installation, which must meet the design requirements.
2. Pay attention to the direction of rotation of the inner hinge sleeve of the cylinder with the same direction as that of the inner plane of the telescopic sleeve.
3. For the expansion joint that needs to be "cold tightened", the auxiliary components for pre deformation should be removed after the pipeline installation.
4. It is strictly forbidden to use the method of expansion joint deformation to adjust the installation out of tolerance of the pipeline, so as to avoid affecting the normal function of the expansion device, reducing the service life and increasing the load of the piping system, equipment and supporting components.
5. During installation, welding slag is not allowed to splash on the surface of the wave shell and other mechanical damage is not allowed.
6. After the piping system is installed, the Yellow auxiliary positioning components and fasteners used for installation and transportation on the wave expansion device should be removed as soon as possible, and the limiting device should 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 the expansion device shall not be stuck or restricted by external components, and the normal operation of each moving part shall be ensured.
8. During the water pressure test, the secondary fixed pipe support at the end of the pipeline with expansion device shall be reinforced to prevent the pipeline from moving or rotating. For the expansion device and its connecting pipeline used in gas medium, 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.

Technical parameters:
Nominal diameter
DN(mm)
Maximum length
L
Installation length
L1
Minimum length
L2
Expansion and contraction
forty
one hundred and thirty
one hundred and fifty
one hundred and seventy
forty
fifty
one hundred and thirty-five
one hundred and fifty-five
one hundred and seventy-five
forty
sixty-five
one hundred and fifty
one hundred and seventy-five
two hundred
fifty
eighty
one hundred and seventy
two hundred
two hundred and thirty
sixty
one hundred
one hundred and seventy
two hundred and five
two hundred and forty
seventy
one hundred and twenty-five
one hundred and ninety
two hundred and twenty-five
two hundred and sixty
seventy
one hundred and fifty
two hundred and ten
two hundred and fifty
two hundred and ninety
eighty
two hundred
two hundred and twenty
two hundred and sixty
three hundred
eighty
two hundred and fifty
two hundred and thirty-five
two hundred and seventy-five
three hundred and fifteen
ninety
three hundred
two hundred and thirty-five
two hundred and eighty
three hundred and twenty-five
ninety
three hundred and fifty
two hundred and fifty
two hundred and ninety-five
three hundred and forty
ninety
four hundred
two hundred and sixty
three hundred and five
three hundred and fifty
ninety
four hundred and fifty
two hundred and sixty
three hundred and five
three hundred and fifty
ninety
five hundred
two hundred and seventy
three hundred and fifteen
three hundred and eighty
one hundred
six hundred
two hundred and eighty
three hundred and thirty
three hundred and eighty
one hundred
seven hundred
three hundred
three hundred and fifty
four hundred
one hundred
eight hundred
three hundred and thirty
three hundred and eighty
four hundred and thirty
one hundred
nine hundred
three hundred and thirty
three hundred and eighty
four hundred and thirty
one hundred
one thousand
three hundred and fifty
four hundred
four hundred and fifty
one hundred
one thousand and two hundred
three hundred and fifty
four hundred
four hundred and fifty
one hundred and ten
one thousand and four hundred
three hundred and ninety
four hundred and forty-five
five hundred
one hundred and ten
one thousand and six hundred
four hundred and ten
four hundred and sixty-five
five hundred and twenty
one hundred and ten
one thousand and eight hundred
four hundred and thirty
four hundred and eighty-five
five hundred and forty
one hundred and ten
two thousand
four hundred and fifty
five hundred and ten
five hundred and seventy
one hundred and twenty
two thousand and two hundred
four hundred and eighty
five hundred and forty-five
six hundred and ten
one hundred and thirty
two thousand and four hundred
five hundred
five hundred and seventy
six hundred and forty
one hundred and forty
two thousand and six hundred
five hundred and forty
six hundred and fifteen
six hundred and ninety
one hundred and fifty
two thousand and eight hundred
five hundred and eighty
six hundred and sixty
seven hundred and forty
one hundred and sixty
three thousand
six hundred and fifty
seven hundred and fifty
eight hundred and fifty
two hundred
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