Links:
Precision Bellows / Expansion Joints
Bellows are a special elastic mechanical component which can counter act undesired material stresses caused by the
thermal expansion/shrinking of pipes exposed to temperature variation or vibration. Bellows also can reduce the
unpleasant noise from mechanical vibrations. Bellows and bellow assemblies are widely applied in the following
industries: power generation, nuclear, aviation, marine, oil-refinery, chemical, medicine, food-processing, paper,
dyeing, metallurgy, railway and automobile etc.

CNBSolutions offers our global customers specific small size precision hydro-formed metal bellows and bellow
assemblies, with high quality and excellent performance at a competitive price. We design and manufacture bellows in
accordance with EJMA standards, ANSI B31.1, ASME B& PV Section III, GB/T12777, GB150, JB/T81~83, GB16749 and
GB2555~2556.

Whether you are supporting an existing product, have a design in progress, or are working on a new application, our
expert engineers can help you design, optimize, prototype and manufacture your bellows in the timeliest, most efficient
and cost-effective fashion.

You don't have to choose from a standard line of components - we custom engineer our bellows to your
specifications.
Overview
Material Type
Working
Temperature
Performance
Applications
SUS304 / SUS304L
(0Cr18Ni9 / 0Cr19Ni10)
-196℃～+400℃
Good corrosion/oxidation and heat resistant
properties at relatively low cost, excellent
low temperature properties
        Tanks and containers
for a large variety of liquids
and solids;
        Process equipment in
the mining, chemical,
cryogenic, food, dairy and
pharmaceutical industries
SUS316 / SUS316L
(0Cr17Ni12Mo2 /
0Cr17Ni14Mo2)
-196℃～+400℃
Much increased corrosion resistance in
chloride-contaminated media, sea water and
acetic acid vapor, good atmospheric
corrosion resistance in polluted marine
atmospheres.
Higher strength and better creep resistance
at higher temperatures than SUS304,
excellent mechanical and corrosion
properties at sub-zero temperatures.  
        Tanks and storage
vessels for corrosive liquids.
        Processing equipment
in the chemical, food, paper,
mining, pharmaceutical and
petroleum industries.
        Architectural
applications in highly
corrosive environments
SUS321 / TP321 /  
1Cr18Ni9Ti
-40℃～+816℃
Higher bending fatigue strength and
anticorrosion, good welding performance,
excellent resistance to oxidation and
corrosion, applicable in the temperature
range of up to about 900°C, combining high
strength, resistance to scaling and phase
stability with resistance to subsequent
aqueous corrosion.
        Aircraft exhaust
manifolds
        High temperature
mineral processing
        Burner pipes and flues
system
        Heavy duty automotive
exhaust systems
        High temperature
boiler , heat exchanger,
pressure vessels
        Oil Refinery Equipment
SUS310 / 0Cr20Ni25
-40℃～+816℃
Excellent high temperature properties with
good ductility and weldability, is designed for
high temperature service. Itresists oxidation
in continuous service at temperatures up to
1150°C
provided reducing sulphur gases are not
present
        Furnace
        Oil burner
        Carburising boxes
        Heat Treatment
baskets and jigs
        Heat Exchangers
        Welding filler wire and
electrodes
Material selection is highly dependent on the application's specific requirements. Corrosion resistance, maximum
pressure, life cycles, joining method and spring rate need to be taken into account.

Below is a list of materials and their performance specifications
Materials
© COPYRIGHT 2010 CNBSolutions, Limited