60 000 354 Lateral Expansion Joints - LowRes 02

8/12/2019 60 000 354 Lateral Expansion Joints - LowRes 02

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Lateral Expansion Joints


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Table ofcontents

General information Lateral expansion joints,

typical features 1 Types 2

Anchors, pipe supports / guides 3

Calculations 4

Program summary 9

Pipe guides, pipe supportsanchors 12

Start-up of plant,compensation of vibration,operating pressure,pre-stressing 13

Pre-stressing diagram/example 14

Recommendations 15

Expansion joint data sheet 16


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Generalinformation

1

A lateral expansion joint works in the sameway a hinged expansion joint does. It uti-lizes the ability of a bellows to rotate inangular direction. The lateral movement

capability is the result of the angular rota-tion of the bellows and their center to centerdistance. The longer the distance betweenthe bellows, the larger is the movementcapacity (Fig. 1).

A longer center to center distance alsoresults in lower displacement forces of theexpansion joint.

Lateral expansion joints are independentexpansion systems in contrast to singlehinged expansion joints. They are practi-cally a two pin system. Lateral expansion

joints are usually installed with a 50% pre-stressing. This is accomplished by pre-stressing the entire pipe system after theexpansion joint is installed. The pre-stress-ing amount can be determined from thepre-stressing diagram in the sectionassembly instructions taking into accountthe installation temperature.

The special features of lateral expansionjoints are:1.) Very low anchor loads as the tie bars /

rods restrain the pressure thrust result-ing from the internal pressure.

2.) Large movement capacities.

3.) Less demanding with regard to pipesupports / guides.

Even pipe hangers might be acceptable.

Lateral expansionjoints

Features

Fig. 1

Lateral expansion joints that are suited tocompensate for lateral movements on oneplane (Fig. 2)

and lateral expansion joints that are suitedto compensate for lateral movements inany direction perpendicular to the expan-sion joint axis (Fig. 3).

Fig. 2 Fig. 3

Dependent on their ability to compensatedifferent movements, one differentiates

between two basic types of lateral expan-sion joints:

2

2

anchor

2

2 lat


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Generalinformation

2

High energy and high frequency vibrationsof the pipeline that are caused by turbulentflow after safety blow-down valves, shut-

down valves or pressure reducers or vibra-tions (pulsation) in the gas or liquid columnitself cannot be compensated for.

Types Tied universal expansion joints that use tierods and washer nuts to restrain the pressurethrust forces represent the simplest design oflateral expansion joints. They are suited to

compensate for movements in any directionperpendicular to their axis.For higher pressure conditions, the use of acardanic universal expansion joint is recom-mended. This type of expansion joint uses tiebars with cardanic hinges to restrain the pres-sure thrust. They too are suited to compen-sate for movements in any direction perpen-dicular to the expansion joint axis. Anotheralternative is the installation of double gimbalexpansion joints or two gimbal joints in a twopin gimbal system if the compensation ofmovements in various perpendicular direc-tions is required. Expansion joints that are

suited to compensate for lateral movementsare also used to decouple pipe systems fromthe vibration that is generated by pumps,compressors or other engines (Fig. 4).

If the unit is firmly mounted to its foundation,the installation of one lateral expansion joint inboth the suction and discharge pipe is suffi-cient (Fig. 4). If tied universal expansion joints

are used, the installation of additional lockwashers should be considered in anticipationof compression forces caused by vacuumthat might occur in the suction pipe.If the unit, however, is mounted on flexiblesupports such as spring or rubber mountings,then the vibrations occur in all directions. Inthis case, an additional angular or lateralexpansion joint must be installed (Fig. 5).One possibility is the installation of a three pinW-system comprising one lateral and one sin-gle hinged expansion joint.To allow the elbow between the expansionjoints to rotate without forcing the tie rods to

release from their tied position one mustassure that the positioning of the tie rods ofthe lateral expansion joint corresponds to thepositioning of the pins of the single hingedunit (Fig. 6).

Fig. 5Fig. 4

Fig. 6

hor

anchor

Lateralvibration

Source ofvibration

universalvibrations

anchor

source ofvibration

1

1

2


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Generalinformation

3

To ensure that the lateral expansion jointcompensates for the thermal expansioncorrectly, pipe anchors and pipe supports /guides must be installed to define the

amount and direction of the thermal expan-sion. According to the peripheral conditionsof the installation, this can be achieved byplacing two pipe guides adjacent to theelbows on each side of the expansion jointwith anchors further away from the locationof the expansion joint or by the installationof one anchor and one pipe guide in theafore mentioned positions (Fig. 8).

The pipe supprts / guides must comply withthe following requirements:

1. Support the weight of the pipeline andthe weight of the expansion joints includ-

ing the weight of the flow, insulation etc.

2. Guide the pipeline in its axis.3. Provide sufficient clearance [s] to allow

free pipe movement from the uncompen-sated thermal expansion L of the pipe

section L and from the arc height h (Fig. 7)without causing the guide to jam.

Short pipe routings that are typical forpower station piping do not normallyrequire pipe guides. The dead weight of thepipeline should be supported by suitablespring or constant pipe supports / hangersin a way that they do not interfere with themovement of the expansion joint.

Pipe supports /guides, anchors

s h + L

Fig. 7

Fig. 8

h

s

L+L+h

s h

anchor

anchor


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Calculations

4

We recommend the installation of expansi-on joints with sleeves if high-frequencyoscillations or turbulences are to be expec-ted in the medium, or if the medium has a

high flow velocity.

The diagram Guidelines for use of sleevesshows the limit curves for steam, gas and

liquids, above which the use of sleeves isabsolutely recommended.

The sleeves serve to protect the bellows

and reduce its tendency towards oscillationinduced by the flow, and to also reducedeposits and wear.

Sleeves

50 100 150 200 3000

1

2

3

4

5

6

7

8

9

10

Nominal diameter DN

Flow

velocity

v

[m/s]

250

Liquid

Steam / gas

The lateral expansionjoints as

a two pin system

+FX

-FX

b

a

L1

Bl

Lx

Lx

-My1

MB

+My2

MB

+My2

+z+y

+x


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Calculations

5

System calculationLateral expansion joint for movementcompensation on one plane.

Please note:

As a result of the deflection of a lateralexpansion joint, a bending moment and aforce occur and load the anchors.

The moment and force are caused by thebellows spring rate and by the friction in thehinges.

The pressure thrust from the internal pres-sure and the effective cross section of thebellows are restrained by the hinged hard-ware.

All formulae refer to a 50% pre-stressingof the pipe movement , that must becompensated for, which means that thelateral expansion joint will be deflectedby the amount of /2.

In case of a 100% or 0% pre-stressing,the amount of 2 times should be usedin the equation.

Permissible movement capacity

Following the recommendations explainedin section basic principals / nominal designconditions, the permissible lateral move-

ment capacity zul is determined takinginto account the nominal lateral movementcapacity lat as follows:

The effective pipe movement /2 must beequal to or less than the permissible lateralmovement capacity zul:

Resulting arc height

At the maximum lateral deflection (/2) toone side, the vertical distance between thebellows L1 is shortened by the amount of thearc height [h] that is determined as follows:

The arc height [h] and the uncompensatedthermal expansion of the pipe section inwhich the expansion joint is installed must betaken into account when the clearance in the

pipe guide is determined or a sufficient dis-tance to the guide must be provided to allowthe pipe to compensate for this movement bymeans of natural compensation.

zul = lat K (tB) KL [mm]

/2 zul

h = L1 (L12 0.25 2) [mm]

Forces at the connection points

When the system is 50% pre-stressed,then the force and the moments occur withdifferent signs in the pre-stressed and oper-ating position.

Bending moments at the connectionpoints

Anchor/connectionpoint forces

Fx = cr p + clat

+ cz p

[N]2 2

My1 = Fx 0.5 L1 + a [Nm]

1000

My2 = Fx 0.5 L1 + b [Nm]

1000


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Calculations

6

L1B

2,5.L1

pre-stressinggap

z

y

x

B

1 -F

X

2.DN+ 1

2

LO1

a

b

Mx1My1

Mx2My2

LO2

2

Fy

-Fy

FX

pre-str

essing

gap

2

2

1

2

The lateral expansionjoints as

a two pin system

System calculation

= anchor= pipe support/guide

Lateral expansion joint for movementcompensation in any direction perpen-dicular to its axis.

All formulae refer to 50% pre-stressing ofthe pipe movement 1 and 2, that must becompensated for, which means that the lat-eral expansion joint will be deflected inboth, the pre-stressed and operating posi-tion by the amount of /2.

Resulting movement

Permissible movement capacity

Following the recommendations explainedin section basic principals / nominal designconditions, the permissible lateral move-ment capacity zul zul is determined tak-ing into account the nominal lateral move-ment capacity lat as follows:

The resulting effective pipe movement/2 must be equal to or less than the per-missible lateral movement capacity zul:

If the system is pre-stressed by 100 % or0 %, then the resulting effective pipe move-ment must be equal to or less than zul:

Resulting arc height

At the maximum lateral deflection (/2) toone side, the vertical distance between thebellows (L1) is shortened by the amount ofthe arc height [h] that is determined as fol-lows:

In case of a 100% or 0% pre-stressing, theamount of 2 times should be used in thisformula.

The arc height [h] and the uncompensatedthermal expansion of the pipe section inwhich the expansion joint is installed mustbe taken into account when the clearancein the pipe guide is determined or a suffi-cient distance to the guide must be provid-ed to allow the pipe to compensate for thismovement by means of natural compensa-tion.

h = L1 (L12 0.25 2) [mm]

zul

= (12+ 2

2) [mm]

zul = lat K (tB) KL [mm]

/2 zul


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Calculations

7

Anchor/connectionpoint forces

Nomenclature

Forces at the connection points

When the expansion joint types 7810, 7820and 7850 (tied universal expansion jointswith tie rods and washers) are used, theforce cz p / 2 does not occur.

When the system is 50% pre-stressed,then the forces and the moments occurwith different signs in the pre-stressed and

operating position.

Bending moments at the connectionpoints

Fx = cr p + clat 1 + cz p

1 [N]2 2

Fy = cr p + clat 2 + cz p

2 [N]2 2

My1 = Fx 0.5 L1 + a

[Nm]1000

My2 = Fx 0.5 L1 + b [Nm]

1000

Mx1 = Fy 0.5 L1 + a [Nm]

1000

Mx2 = Fy 0.5 L1 + b [Nm]

1000

a, b Center to center distance betweenbellows and connection point [mm]

h Arc height [mm]

L1 Center to center distance betweenbellows [mm]

clat Lateral spring rate [N/mm]

cr Hinge friction [N/bar]

cz Additional force from pressure and

rotation [N/bar mm]KL Fatigue factor []

K Movement adjustment factor []

Fx,y Displacement force in x and y-direction [N]

My 1, 2 Bending moment at theconnection point [Nm]

Mx 1, 2 Bending moment at theconnection point [Nm]

zul Permissible lateral movement ofthe expansion joint [mm]

Resulting movement of thepipeline [mm]

1, 2 Movement of the pipelinesections 1 and 2 [mm]

p Operating pressure [bar]


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Calculations

8

General

The chapter angular expansion jointsdescribes different three-pin expansion

systems that comprise three angularexpansion joints.If the center to center distance between thejoints is short, it is often more economical touse one lateral expansion joint instead ofthe two angular units that are installed intandem.The lateral expansion joints type 7710 and7720, that are suited for movement com-pensation on one plane are suitable for the3W, 3L and 3Z expansion systems.In 3 pin gimbal systems, the two gimbaljoint can be replaced by one lateral expan-sion joint with movement compensation

capabilities in any direction perpendicularto the expansion joint axis. The double gim-bal joints type 7410 and 7420 are kinemat-ically absolutely identical with two individ-ual gimbal joints. If tied universal expansionjoints with tie rods or cardanic hinges areused (types 78..), then these joints must beinstalled with the correct positioning of therestraining hardware to allow the joints torotate in an angular direction around thesame axis as the single hinged expansionjoint in the system. (Fig. 9 shows an exam-ple using one single hinged and one tieduniversal expansion joint with tie rods. The

line between the tie rods [1] must be paral-lel to the line [2] between the hinges).

Fig. 9

Note: Lateral expansion joints that areused in three pin systems are notallowed to have more than two tie rodsor bars. Three or more tie rods / bars willnot allow an angular rotation of the indi-vidual bellows of a lateral joint.

In order to apply the design calculationsof three pin expansion systems to sys-tems that comprise a lateral expansionjoint, the spring rates and displacement

force of the lateral expansion joint mustbe converted into an equivalent bendingspring rate and bending moment of twosubstitute angular joints.

These two substitute angular expansionjoints represent the lateral expansion jointin the design calculation of the expansionsystem.

The following conversion applies for tieduniversal expansion joints with tie rods onlyas an approximate since the distancebetween the spherical washers is not the

same as the center to center distancebetween the bellows. Please contact us ifan exact calculation is required.

The bending spring rate c of the substi-tute angular expansion joint is determinedfrom the lateral spring rate c lat of the lateralexpansion joints as follows:

The angular hinge friction c r of the substi-

tute angular expansion joints is deter-mined from the lateral friction c r (lat) of thelateral expansion joint as follows:

The additional angular moment c z of thesubstitute angular expansion joint isdetermined from the additional lateral forcec z(lat) of the lateral expansion joint as fol-lows:

The permissible angular rotation zul of thesubstitute angular expansion joint isdetermined from the permissible lateralmovement capacity zul as follows:

Lateral expansionjoints in

three pin systems

1

1

2

c = clat L12

10

3 [Nm]360 1o

cz = cz (lat) L12 103[ Nm ]360 bar 1o

zul = arcsin(zul) [degr.]L1

cr = cr (lat) L1 [Nm]2000 bar

clat Lateral spring rate [N/mm]

cr(lat) Hinge/washer friction [N/bar]

cz(lat) Additional force from internalpressure and rotation [N/bar mm]

L1 Center to center distancebetween bellows [mm]


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9

Program

Lateral expansionjoints for lateralmovements on oneplane

Lateral expansion joint (double hinged)Bellows made of stainless steel 1.4571 (upto and including DN 50), or 1.4541 from DN65 and larger. Both sides with weld ends

made of carbon steel, external restraints incarbon steel. Suited for lateral movementcompensation on one plane.Type BKT-7710 (previous: 307/270 and272)DN ..... / PN ... / lat ..... / Bl .....

Hardware design according to the manu-facturing program.

Lateral expansion joint (double hinged)Bellows made of stainless steel 1.4571 (upto and including DN 50), or 1.4541 from DN65 and larger. Both sides with flangesmade of carbon steel, external restraints incarbon steel. Suited for lateral movementcompensation on one plane.Type BKT-7720 (previous: 307/271 and

273)DN ..... / PN ... / lat ..... / Bl .....



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10

Program

Lateral expansionjoints for lateral

movementson any plane

Lateral expansion joint (tied universal)Bellows made of stainless steel 1.4571 (upto and including DN 50), or 1.4541 from DN65 and larger. Both sides with weld ends

made of carbon steel, external restraints incarbon steel. Suited for lateral movementcompensation on any plane.Type BKT-7810 (previous: 307/280 and282)DN ..... / PN ... / lat ..... / Bl .....


Lateral expansion joint (tied universal)Bellows made of stainless steel 1.4571 (upto and including DN 50), or 1.4541 from DN65 and larger. Both sides with flangesmade of carbon steel, external restraints incarbon steel. Suited for lateral movementcompensation on any plane.Type BKT-7820 (previous: 307/281 and

283)DN ..... / PN ... / lat ..... / Bl .....


Lateral expansion joint (tied universal)Bellows and van-stone ends made of stain-less steel 1.4571 (up to and including DN50), or 1.4541 from DN 65 and larger. Bothsides with van-stone flanges made of car-bon steel, external restraints in carbonsteel. Suited for lateral movement compen-sation on any plane.Type BKT-7850 (previous: 307/285 and287)DN ..... / PN ... / lat ..... / Bl .....


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11

Program

Double gimbal expansion jointBellows made of stainless steel 1.4571 (upto and including DN 50), or 1.4541 from DN65 and larger. Both sides with weld ends

made of carbon steel, external gimbalrestraints in carbon steel. Suited for lateralmovement compensation on any plane.Type BKT-7410 (previous: 307/290)DN ..... / PN ... / lat ..... / Bl .....

Double gimbal expansion jointBellows made of stainless steel 1.4571 (upto and including DN 50), or 1.4541 from DN65 and larger. Both sides with flangesmade of carbon steel, external gimbalrestraints in carbon steel. Suited for lateralmovement compensation on any plane.Type BKT-7420 (previous: 307/291)DN ..... / PN ... / lat ..... / Bl .....

Lateral expansion joint with cardanichingesBellows made of stainless steel 1.4541.Both sides with weld ends made of carbonsteel, external anchor plate restraints incarbon steel. Suited for lateral movementcompensation on any plane.

Type BKT-7810 BDO (previous: 307/286)DN ..... / PN ... / lat ..... / Bl .....

With flanges: Type BKT-7820 BDO

Lateral expansion joint with ball joint hingesBellows made of stainless steel 1.4541.Both sides with weld ends made of carbonsteel, external anchor plate restraints incarbon steel. Suited for lateral movementcompensation on any plane.Type BKT-7810 BEO (previous: 307/288)DN ..... / PN ... / lat ..... / Bl .....

With flanges: Type BKT-7820 BEO

Lateral expansionjoints for lateralmovementson any plane

Special designs


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12

Installationinstructions

Lateral expansion joints that allows a later-al movement on one plane only must beinstalled with a correct positioning of the tiebars with respect to the direction of the pipe

expansion that is to be compensated for.The pipe movement must always be per-pendicular to the axis of the pins.

In contrast to axial expansion joints, lateralexpansion joints are less demanding with

regards to pipe supports and guides. Theyhave to support the weight of the pipelineincluding the insulation, flow, wind andother external loads in such a way thatrelieve the expansion joints from thoseloads without hindering their movement.

In short pipe routings such as in compactpower house pipe systems, pipe supports

and guides may not be necessary at all.In long pipelines, a pipe guide should beinstalled on each side of the lateral expan-sion joint.

Only one lateral expansion joint should beinstalled between two anchors. Theseanchors must withstand the displacementforce of the lateral expansion joint thatresults from the bending spring rate of each

bellows, the friction of the pins in the hingesas well as the friction forces in the pipe sup-ports and guides.

Pipe guides with excess friction as a resultof overloading, deposits of dirt or rust maygall and cause excessive strain in the pipe,its anchors and connections.

Pipe guides / supports

Anchors


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13

The permissible operating pressure resultsfrom the nominal pressure, taking into

account the reduction factors according tothe technical data sheets.

Lateral expansion joints are commonlyinstalled at 50% pre-stressing of their antic-ipated movement. The actual temperatureof the pipeline at the time of installationmust be taken into acount when pre-stress-ing is applied. This is particulary importantfor long distance pipelines.

If the temperature of the pipeline at the timeof installation deviates form the lowest pos-sible temperature, then the amount of pre-stressing must be determined according tothe following pre-stressing diagram.

Pipe anchors, supports and guides must befirmly installed prior to filling the system orcommencing the pressure test. The per-missible pressure test must not be exceed-

ed. The bellows must be protected againstweld, mortel or plaster splatter, dirt or anyform of mechanical damage during installa-tion.Steam pipe systems must be installed onan incline and must further be heated at aslow rate to assure that condensate, thatmight cause steam hammers, is drained intime. Sufficient insulation and the avoid-

ance of water pockets are recommended.Steam cleaning should be avoided due tothe risk of water hammers and unwantedvibrations of the bellows.

Expansion joints with inner sleeves must beinstalled taking into account the flow direc-tion with the fixed end of the sleeves facingup-stream. Otherwise, common principlesof failure prevention such as proper watertreatment, electrical bridges in copper andgalvanized pipes etc. for the avoidance ofcorrosion defects, must be followed.

Lateral expansion joints with tie rods (tieduniversal expansion joints) are suited to

compensate for mechanical vibrations inone plane, for example in discharge pipesof pumps, compressors and other rotatingmachinery (Fig. 1).If the machinery is mounted rigidly to itsfoundation, the installation of one tied uni-versal expansion joint is usually suffucient.If the machinery however is mounted onflexible supports, then the installation oftwo tied universal expansion joints is nec-essary to compensate for the movementsthat occur in all directions (Fig. 2). A pipeanchor is required immediately after theexpansion joint and must be separated

from the vibrating foundation.

The installation occurs without pre-stressing!

Vibrations with high frequencies as a resultof a turbulent flow as apparent for exampleafter safety and relief valves or emergencyshut-down valves or vibrations that are gen-erated by the gaseous or liquid flow itselfcannot be compensated for.

The expansion joint should always beinstalled as close as possible to thesource of the vibration.

Fig. 2Fig. 1

anchor

anchor

Lateralvibration

Source ofvibration

universalvibrations

anchor

source of

vibration

Start-up of plant

Vibrationcompensation

Operating pressure

Pre-stressing



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14

Given: Lateral expansion joint for a 140 m long

pipeline Lowest possible temperature: 7 C Maximum temperature: +293 C Maximum thermal expansion according

to t 300 C = 500 mmDetermine the correct amount of pre-stressing if the expansion system is to bepre-stressed at 50% of the total movement(= 250 mm) and when the actual tempera-ture at the time of installation is +20 C.Answer: The thermal expansion of thepipeline between 7 C and +20 C (t =

27 C) is 45 mm. To determine the correctamount of pre-stressing, this amount mustbe deducted from the total amount of pre-stressing i.e. 250 45 = 205 mm.The diagram provides a quick resolution with-out the need of a mathematical calculation:

1. Temperature difference between instal-lation temperature (+20 C) and lowesttemperature (7 C) = 27 C.

2. Total length of pipeline = 140 m3. Draw a vertical line from point 27 C at

the top of the diagram downwards to theline that connects the point 0 and thepoint 140 at the right side of the diagram.

4. From this intersection, draw a horizontalline to the left side of the diagram. The num-ber 45 [mm] indicates the thermal expan-sion of the pipe at installation temperature.

5. Draw a line from point 45 to the point500 in the next diagram to the left and

extend this line to the far left diagram.

The number 205 [mm] indicates theamount of pre-stressing by which theexpansion joint must be pre-stressed intothe opposite direction of the expected ther-mal growth of the pipeline.


Pre-stressingdiagram

Example

0

50

100

150

125

75

25

175

200

225

250

275

600

550

500

450

400

350

300

250

200

150

100

50

0

80

90

70

100

60

40

30

20

10

0

80

90

70

100

60

50

40

30

20

0

10

110

120

130

140

150

160

10 20 30 40 50

Temperature difference between installationtemperature and lowest temperature in C

Lengthofpipeinm

Total movement capacity of expansion system in mm

Amount of pre-stressing of the expansion system in mm

205

27

only applicalbe for pipes of St 35 material

45

50

Expansionofpipeatinstallationte

mperatureinmm


17/20

15


RecommendationsAvoid the installation of standard expansionjoints in the immediate proximity of pres-sure reducers, superheated steam con-densers and quick activated shut-off valves

as high frequency vibrations might be gen-erated by this equipment. Provide heavywall sleeves for the expansion joints, perfo-rated flow visors in the pipeline or equaliz-ing sections to protect the bellows againstfailures.

If high frequency vibrations, turbulence orhigh flow velocities are anticipated, we rec-ommend the installation of expansion jointswith inner sleeves (liners).

For pipeline diameters equal to or largerthan 150 mm, we recommend internalsleeves if the flow velocity exceeds 8 m/sfor a gaseous flow and 3 m/s for liquids.


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Expansionjoint data sheet

Type of expansion joint:

Nominal diameter DN:

Design conditionsDesign pressure bar

Design temperatureo

C

Movements

axial compress.+/ mm

axial extension +/ mm

lateral +/ mm

angular +/ degr.

Vibrations frequency Hz

amplitude mm

Type of vibration

Number of cycles

Flow medium

Flow velocity

Limitations mechanical properties:

axial spring rate N/mm

lateral spring rate N/mm

angular spring rate Nm/degr.

axial force Nlateral force N

angular moment Nm

pressure thrust N

Quality tests:

Hydraulic press. test yes no

Leak test

with air yes no

with helium yes no

permissible leak rate mbar l/s

Auxiliary items:Inner sleeve yes no

External shroud yes no

Other items (specify)

Size/End fittings: material:

Weld ends Fixed flange

Loose flange

Other (specify)

Space:

maximum length: mm

maximum diameter: mm

Additional NDE BL RL BRR RR other items

X-ray examination %

dye penetrant examination %

ultrasonic examination %

magnetic particle examination %

BL = bellows longitudinal weld seam RL = pipe longitudinal weld seamBRR = bellows to pipe circumferential weld seam RR = pipe circumferential weld seam

QA/QC requirements

Design codeSpecial specifications

Certification

Authorized inspection party

16


19/20


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60000

354

BK.0

612.4.1

.en.S

to.2

242

BOA Balg- und Kompensatoren-Technologie GmbH

Lorenzstrasse 2-6

D-76297 Stutensee

Postfach 11 62

D-76288 Stutensee

Phone: +49 (0)7244 99-0

Fax: +49 (0)7244 99-372

E-Mail: [email protected]

Internet: www.boagroup.com

Documents

60 000 354 Lateral Expansion Joints - LowRes 02