Technical Articles

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July 12, 2014

Understanding Bellows Internal Pressure

*For original article with graphics click the PDF link attached below.   Understanding Bellows Pressure Capacity Simple concepts of convoluted shapes K.I.S.S. – Keep It Simple […]
July 12, 2014

Why Stainless Steel Doesn’t Rust

*For original article with graphics click the PDF link attached below.   A tale of two metals Most bellows are made from 300 series stainless steel […]
July 12, 2014

Torsion on Expansion Joints in Piping Systems

*For original article with graphics click the PDF link attached below.   Torsion on Expansion Joints in Piping Systems Understanding design Avoid bellows and torque When […]
July 12, 2014

Metal Bellows Cycle Life – EJMA vs ASME

*For original article with graphics click the PDF link attached below.   Will the real cycle life please stand up How can three well-respected codes, or […]
July 12, 2014

Moving Laterally in an Axial World

*For original article with graphics click the PDF link attached below.   Going in another direction Henry David Thoreau once wrote, “If a man does not […]
July 12, 2014

Why An Expansion Joint Works – Part II

*For original article with graphics click the PDF link attached below.   The bellows exposed There’s no mystery as to why a bellows can flex – […]
July 11, 2014

Why An Expansion Joint Works – Part I

*For original article with graphics click the PDF link attached below.   On the surface it doesn’t seem to make sense. If the code requires a […]
July 11, 2014

Understanding Pressure Balanced Expansion Joints

*For original article with graphics click the PDF link attached below.   A formula free explanation To explain a pressure balanced expansion joint, many an engineer […]
July 11, 2014

Understanding Expansion Joint Pressure Thrust

*For original article with graphics click the PDF link attached below.   The force is always with us A bellows exerts a longitudinal force when internally […]
July 10, 2014

Titanium Bellows

*For original article with graphics click the PDF link attached below.   Pulp & Paper Challenges To 317L The bleaching service in pulp & paper plants […]
July 10, 2014

Cor-Ten – The forgotten steel

*For original article with graphics click the PDF link attached below.   COR-TEN Steel In Flue Gas Ducting Expansion Joints The funny named steel that won’t […]
July 10, 2014

Hinged Expansion Joints in FRP Piping

*For original article with graphics click the PDF link attached below.   Where metal meets plastic Fiberglass Reinforced Plastic (FRP) piping and vessels have a higher […]