Call:86-13606159355 GET A QUOTE
Metal Expansion Joints

Our Compensators are mainly used in steel, pipelines, automobile and various other industries for generating high pressure in motors.


Offered compensators are manufactured using high quality aluminum and bronze & modern machinery in line with set international standards.


Widely demanded in steel industry because of their sturdy construction, resistance against corrosion & abrasion, superior performance and longer functional life.

In addition, we supply Metal Compensators in standard and customized packaging options to achieve the best safety during the transmit.

  • TECHNICAL SPECIFICATION
  • RECOMMENDED PRODUCTS
  • VIDEOS
  • MANUALS

    Typical Narrow Arch Expansion Joint Movement/Spring Rate Capabilities

    Nominal Pipe Size Expansion JointNominal Face-to-face
    Minimum Length
    MOVEMENTSSPRING RATES
    AXIAL COMPRESSIONAXIAL EXTENSIONLATERAL DEFLECTIONDEGREES OF ANGULAR MOVEMENTDEGREES OF TORSIONAL MOVEMENTAXIAL COMPRESSIONAXIAL EXTENSIONLATERAL DEFLECTIONANGULAR MOVEMENT
    inmminmminmminmminmmlbs/inN/mmlbs/inN/mmlbs/inN/mmft-lbs/ degNm/deg
    1*2561507/16111/461/21327.532354130453350610.040.05
    1-1/4*3261507/16111/461/21322.532945138367438770.10.13
    1-1/2*4061507/16111/461/21318.533536245980524920.150.2
    25061507/16111/461/21314.5342374552977001230.30.41
    2-1/26561507/16111/461/21311.53530936891217621330.50.68
    37561507/16111/461/2131036351118281458241440.81.1
    3-1/28861507/16111/461/2138.337421309651698881551.31.8
    410061507/16111/461/2137.5384814811041939521671.92.6
    512561507/16111/461/213631058185137624110921913.75
    615061507/16111/461/213531271223165228912342166.48.7
    8200615011/16183/8101/2135.5314122471837322150626412.717.2
    10250820011/16183/8101/2134.5317663092296402161828324.232.8
    12300820011/16183/8101/2133.75321183712755482189633242.157.1
    14350820011/16183/8101/2133.25218533252411422223439119.280.3
    16400820011/16183/8101/2132.75221183712755482257245076103
    18450820011/16183/8101/2132.51238241731015432840497106144
    20500820013/16217/16111/2132.51264946434406023176556152206
    225501025013/16217/16111/2132.251291351037856633296577205278
    246001025013/16217/16111/21321317855741307233412597274371
    266501025015/16241/2131/2132.31306053639806973658641292396
    287001025015/16241/2131/21321329657742867513904684382518
    307501025015/16241/2131/21321353261945948044150727437592
    328001025015/16241/2131/2131.81376966048998584876854555752
    348501025015/16241/2131/2131.751400270156029815602981645874
    369001025015/16241/2131/2131.5142387425512965632811088441144
    389501025015/16241/2131/2131.51447578458181019650211399431278
    4010001025015/16241/2131/2131.514708824612410726676116910421413
    421050123001-1/16279/16141/2131.514452780578310136846119911631577
    441100123001-1/16279/16141/2131.514664817605710617142125112701722
    461150123001-1/16279/16141/2131.314870853633911107436130216802278
    481200123001-1/16279/16141/2131.2515087891660811577732135418252474
    501250123001-1/16279/16141/2131.2515300928688412068024140519682668
    521300123001-1/16279/16141/2131.2515512965716612558314145621382899
    541350123001-1/16279/16141/2131.25157241002743513028606150723083129
    561400123001-1/16279/16141/2131.25159361039771713518896155824643341
    581450123001-1/16279/16141/2131161481076799214009184160833104488
    601500123001-1/16279/16141/21310.563601114826814489472165935374795
    661650123001-1/16279/16141/21310.5699612259095159310216178942885813
    721800123001-1/16279/16141/2130.90.5763213379922173810954191856817702
    781950123001-1/16279/16141/2130.90.58268144810748188211902208470229520
    842100123001-1/16279/16141/2130.80.589041559115752027128502250864111715
    962400123001-1/16279/16141/2130.70.51017617821322823171475025381344118223
    1022550123001-1/16279/16141/2130.660.51081218931405624621570027491696723003
    1082700123001-1/16279/16141/2130.620.51144820051488326061665229162185529630
    1203000123001-1/16279/16141/2130.560.51272022281653728961855032492987140498
    1323300123001-1/16279/16141/2130.510.51399224501819031852028835533354745481
    1443600123001-1/16279/16141/2130.470.51526426731984334752202628574290258164

    Typical Wide Arch Expansion Joint Movement/Spring Rate Capabilities

    Nominal Pipe Size Expansion JointNominal Face-to-faceMOVEMENTSSPRING RATES
    AXIAL COMPRESSIONAXIAL EXTENSIONLATERAL DEFLECTIONDEGREES OF ANGULAR MOVEMENTDEGREES OF TORSIONAL MOVEMENTAXIAL COMPRESSIONAXIAL EXTENSIONLATERAL DEFLECTIONANGULAR MOVEMENT
    inmminmminmminmminmmlbs/inN/mmlbs/inN/mmlbs/inN/mmft-lbs/ degNm/deg
    1*2561503/4197/16115/81634.431763122839262460.030.04
    1-1/4*3261503/4197/16115/81628.132203828750328570.0750.1
    2001/1/24061503/4197/16115/81623.132654634460393690.110.15
    25061503/4197/16115/81618.133175541472525920.220.3
    2002/1/26561503/4197/16115/81614.4339769517905711000.3750.51
    37561503/4197/16115/81612.53476836211096181080.60.81
    2003/1/28861503/4197/16115/81610.43556977241276661170.9751.32
    410061503/4197/16115/8169.436361118281457141251.4251.93
    512561503/4197/16115/8167.53793139103218181914334
    615061503/4197/16115/8166.23953167123921792516257
    820061501-3/163011/16175/8166.931059185137824111291981013
    1025082001-3/163011/16173/4195.631324232172230212132121824
    1230082001-3/163011/16173/4194.731588278206636214222493243
    1435082001-3/163011/16173/4194.121390243180831716752931419
    1640082001-3/163011/16173/4193.421588278206636219293385777
    1845082001-3/163011/16173/4193.1117863132326407213037380108
    2050082001-7/16373/4193/4193.11198734825804522382417114155
    22550102501-7/16373/4193/4192.81218538328394972472433154209
    24600102501-7/16373/4193/4192.51238341730975422559448205278
    26650102501-5/8411253/4192.91229540229855232743480219297
    28700102501-5/8411253/4192.51247243332145632928513286388
    30750102501-5/8411253/4192.51264946434456033112545328445
    32800102501-5/8411253/4192.21282749536746433657640416564
    34850102501-5/8411253/4192.21300152542017364201736484656
    36900102501-5/8411253/4191.91317855641347244746831633926
    38950102501-5/8411253/4191.91335658843637644876854707959
    401000102501-5/8411253/4191.913531618459380450078777811059
    421050123001-7/8481253/4191.913339585433775951348998721182
    441100123001-7/8481253/4191.913498613454379653569389521291
    461150123001-7/8481253/4191.6136526404754832557797712601708
    481200123001-7/8481253/4191.61381566849568685799101613691856
    501250123001-7/8481253/4191.61397569651639046018105414762001
    521300123001-7/8481253/4191.61413472453749416235109216032173
    541350123001-7/8481253/4191.61429375255769766454113017312347
    561400123001-7/8481253/4191.614452780578710136672116818482505
    581450123001-7/8481253/4191.214611807599410506888120624823365
    601500123001-7/8481253/4191.214770835620110867104124426533597
    661650123001-7/8481253/4191.215247919682111947662134232164360
    721800123001-7/8481253/4191.10.557241002744113038215143942615777
    781950123001-7/8481253/4191.10.562011086806114128926156352667140
    842100123001-7/8481253/41910.566781169868115209637168864818787
    962400123001-7/8481253/4190.870.576321337992117371106219371008113668
    1022550123001-7/8481253/4190.820.5810914201054218461177520621272517253
    1082700123001-7/8481253/4190.770.5858615031116219551248921871639122223
    1203000123001-7/8481253/4190.70.5954016701240321721391224362240330374
    1323300123001-7/8481253/4190.640.51049418381364223891521626652516034112
    1443600123001-7/8481253/4190.590.51144820051488226061651928933217643625




    Our Compensators are mainly used in steel, pipelines, automobile and various other industries for generating high pressure in motors.


    Offered compensators are manufactured using high quality aluminum and bronze & modern machinery in line with set international standards.


    Widely demanded in steel industry because of their sturdy construction, resistance against corrosion & abrasion, superior performance and longer functional life.

    In addition, we supply Metal Compensators in standard and customized packaging options to achieve the best safety during the transmit.


    Metal expansion joints are flexible corrugated “bellows”manufactured by forming of metal plates from wide range of steels – stainless also carbon. Could have circulares, or non-circular section, metal expansion joints are manufactured with welding ends, or flanges and for small dimensions also with threaded fittings.


    Metal expansion joints with circular section are manufactured from dimension DN 50 up to DN 5000 mm.


    Metal expansion joints with non-circular (rectangular section) are manufactured according to individual requirements of customer.


    Material

    The expansion joints are made from the following materials according to working conditions: BELLOWS standard: AISI 321, AISI 316Ti special: Inconel 625, Incoloy 825, Monel 400, Titanium, ... ENDINGS good welded steels grades 11, 12 and 17, or other according to working conditions INNER SLEEVE standard: AISI 304


    Single Axial Expansion Joint (the compensator is composed of a bellow and a structural part, which is mainly used to absorb the axial displacement and cannot support the expansion joint of the bellows pressure thrust; Caliber: DN50-DN6000)

    Working pressure: 0.01-4.0Mpa


    External Pressurized Expansion Joint ( It consists of structural parts such as corrugated tubes that bear external pressure, outer tubes and end rings, and is mainly used to absorb axial displacement and cannot support the expansion thrust of corrugated tube pressure; Caliber: DN50-DN5000)

    Working pressure: 0.25-4.0Mpa


    Universal Untied Expansion Joint( It consists of two bellows and structural parts connected by the intermediate pipe, which is mainly used to absorb the axial and lateral combined displacement and cannot withstand the pressure thrust of the bellows expansion joint; Caliber: DN50-DN6000) 

    Working pressure: 0.01-4.0Mpa


    Single Hinged Expansion Joint( It consists of a bellow and structural components such as pins, hinge plates and risers, which can only absorb angular displacement in a plane and can withstand the pressure thrust of the bellows; Caliber: DN50-DN5000;)

    Working Pressure: 0.25-2.5Mpa


    Single Gimbal Expansion Joint(It consists of a bellows and structural parts such as pins, hinge plates, universal rings and risers, which can absorb angular displacement in any plane and can withstand the pressure thrust of the bellows;Caliber:DN50-DN5000)

    Working pressure: 0.25-2.5Mpa


    Universal Tied Expansion Joint( It consists of two bellows connected to the middle pipe, structural rods such as tie rods, end plates and spherical and cone washers, which can absorb lateral displacement in any plane and can withstand the pressure thrust of the bellows;Caliber:DN50-DN5000)

    Working pressure: 0.25-2.5Mpa


    Universal Hinged Expansion Joint( It consists of two bellows connected to the middle pipe, structural parts such as pins, hinge plates and risers, which can only absorb lateral and angular displacement in one plane and can withstand the pressure thrust of the bellows;Caliber:DN50-DN5000)

    Working pressure: 0.25-2.5Mpa


    Elbow Pressure Balanced Expansion Joint(It consists of two working bellows connected by a working bellows or intermediate pipe , a balancing bellows and elbows or tees, heads, tie rids, end plates and spherical and cone washers, etc., mainly used for absorption Expansion joint that combines axial and lateral and angular displacement can balance the pressure and thrust of the bellows;Caliber:DN50-DN5000)

    Working pressure: 0.25-1.6Mpa


    In-line Pressure Balanced Expansion Joint( It consists of two working bellows at both ends and a balance bellows in the middle, as well as structural members such as tie rods and end plates, which are mainly used to absorb axial displacement and can balance the pressure and thrust of the bellows expansion joint; Caliber: DN50-DN5000)

    Working pressure:0.25-1.6Mpa


    Bypass In-line Pressure Balanced Expansion Joint(It consists of two identical bellows and end ring, head, outer tube and other structural parts, which are mainly used to absorb axial displacement and can balance the pressure and the thrust of the bellows expansion joint; Caliber: DN100-DN5000)

    Working pressure:0.25-1.6Mpa


    Single Axial High Temperature Expansion Joint( The expansion joint is composed of a bellows, a refractory material and a structural part, and is mainly used to absorb the axial displacement and cannot support the expansion thrust of the bellows pressure. Use temperature can reach 1600°C; Caliber: DN1000-DN5000)

    Working pressure: 0.01-2.5Mpa


    Universal Tied Expansion Joint For Blast Furnace Gas( It consists of two bellows, refractory materials and structural parts connected to the middle pipe. It is mainly used to absorb the combined axial and lateral displacements and cannot withstand the pressure thrust of the bellows expansion joint. Use temperature can reach 1600°C; Caliber: DN1000-DN5000)

    Working pressure: 0.01-2.5Mpa


    Rectangular Corrugated Expansion Joint(--Rectangular bellows can absorb axial displacement, angular displacement, lateral displacement and displacement made of any combination of them; --The corners of the rectangular bellows are usually rounded, right-angled, double obtuse, and folded. The waveform (CE waveform) has full height and half height. The commonly used materials are weathering steel, austenitic stainless steel, and ordinary carbon steel; --Operating pressure-30~200kpa 


    This bellow is mainly used for displacement compensation of square pipes. Smoke ducts, fan inlets and outlets, dust collector inlet and outlet pipes, and various exhaust gas pipes are often used.


    Use of Expansion joint

    Expansion joints for coal fired boilers

    ZhongBo is able to offer varying technical standards to suit the technical requirements/maintenance cycle and budget for each location of joint.


    the large scale systems necessary for desulphurization of flue gases have created highly demanding technical and environmental requirements for expansion joints. the large sizes and consistent quality require a competent supply partner like ZhongBo.


    Sealed for low dust ingress

    High dust concentration in coal fired duct systems requires an innovative solution to stop the dust ingressing into the expansion joint. The critical problem is temperature variance and gradients. Dust on the steel parts can cause flash and cool spots, leading to shortening the life of the joint.


    By using site utility air, a sealing cushion of air can be created at the internal edge of the joint, eliminating any dust ingress and maximizing life.


    ZhongBo manufactures fabric and stainless-steel expansion joints for all applications within a conventional fossil fuel fired steam cycle power station. Expansion Joint Expansion Joints are used in the following locations of plant: 

    Fabric Joints

    • BOFA - Boost over fired air ducts

    • FGD-Flue gas desulphurization

    • Main boiler ducting

    • Boiler penetrations and duct connections 

    • Ventilation ducts 

    • Metal Joints 

    • Steam piping and penetrations 

    • Oil connections 

    • High pressure pipework


More products like this

CONTACT US Leave a note – our customer service will get back to you soon.

Name*
Company*
Country*
Phone*
Email*
Attach a File
Message*