Page 253 - Icon Ridge Hardware & Fixing Technology Catalog

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Strain Diagram for Different Types of Pipes

Metal and plastic materials contract at low temperatures and expand under heat. Such physical conditions need to be taken into consideration in
particular for pipes of heating installations, which are subject to continuous temperature variations due to the thermostat control. Due to
appropriate pipe fixtures, which are able to swing or shift, such stress forces are being avoided.

PE 0,2 (mm/mK) × 10°

Cu 0,0165 (mm/mK)
PP 0,115 (mm/mK)

Fe 0,0115 (mm/mK)

PVC 0,08 (mm/mK) × 10°

1 2

Temperature difference Δ T (K) Linear thermal expansion Δ L (mm)

An example:
Calculation formula for linear thermal
1
1 Copper pipe, Cu pipeline length 30 m
expansion
Temperature difference ΔT = 50° K
Linear thermal expansion ΔL = 24,75 mm ΔL = L × ΔT × α
(mm) (m) (mm/mK)
2
2 PVC pipe, pipeline length L = 40 m
Temperature difference ΔT = 40° K ΔL = linear thermal expansion
Linear thermal expansion ΔL = 128 mm L = pipeline/pipe section length
ΔT = temperature difference
α = linear thermal expansion coefficient
Attention!
For plastic pipes (PE, PP, PVC), the read-off linear themal expansion
from the diagram must be multiplicated by factor 10.

The Permissible Load in Newton (N) During Bending for:

Threaded Pipes Threaded Pins (4.6)

Threaded Distance L to pipe centre in mm Threaded rod Ø Distance L to pipe centrum in mm
rod Ø
50 100 150 200 250 300 400 500 50 100 150 200 250 300
1/2” 1.222 611 407 305 239 166 93 59 M6 34 10 – – – –
3/4” 2.150 1.075 716 537 430 358 121 136 M8 85 36 15 – – –
1” 4.277 2.138 1.425 169 855 712 231 340 M10 170 85 40 22 14 10
M12 300 150 86 48 31 22
Berechnungsgrundlage: M16 780 390 260 173 111 77
Maximum deflection: fmax = L/150
Permissible steel stress: α = 160 N/mm²

Technical data subject to change.
Availability subject to country specific rules and regulations. www.iconridge.com Source: Theo Förch GmbH & Co. KG 253