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Custom Metal Expansion Joints
Custom EJMA-based metal expansion joints: 19 to 10,000 mm diameter, pressure up to 200 Barg and -180 to 800 °C, for power plants, refineries and petrochemical plants.
Product Introduction
Custom metal expansion joints are designed, manufactured and tested to the customer's requirements and the EJMA standard. They absorb axial, lateral and angular movements caused by temperature, vibration and external factors, and serve power plants, refineries, petrochemical, steel and cement industries. IIVCO has over thirty years of experience.
Diameter
19 to 10,000 mm
Pressure
Full Vacuum to 200 Barg
Temperature
-180 to 800 °C
Design standard
EJMA
Sheet material
Stainless, Inconel, Incoloy
Sheet thickness
0.25 to 6 mm
Interactive maps and models
Applications & industries
Wood & paper industries
Heat exchangers
Cement industries
Steel industries
Petrochemical industries
Oil & gas refineries
Expansion Joint Calculator
Compute equivalent displacements and reaction forces in real time.
Input parameters
Joint type
Equivalent displacement per convolution
Live resultsAxial (ex)
1.000mm
Lateral (ey)
1.000mm
Angular (eθ)
0.349mm
Total displacement
2.349mm
Within allowable limit
Reaction forces from displacement
Axial force (FBX)
15.00kg
Lateral force (FBY)
5.00kg
Angular moment (Mθ)
261.80kg·mm
- ex
Equivalent axial displacement
Singleex=X / n
Doubleex=X / (2n)
- ey
Equivalent lateral deflection
Singleey=(3 × Dm × Y) / (L × n)
Doubleey=(3 × Dm × Y) / [(L + ℓ(ℓ/L + 1)) × 2n]
- eθ
Equivalent angular displacement
Alleθ=(Dm × π × θ) / (360 × n)
- Σe
Allowable criterion
Limiteallow ≥ ex + ey + eθ
- F
Forces and moment
AxialFBX=fB × ex
LateralFBY=(fB × Dm × ey) / (2L)
MomentMθ=(fB × Dm × eθ) / 4
Expansion Joint Order Questionnaire
Complete each step in order. Fields marked with * are required.