Bolt a hot 6″ line down at both ends and it shoves its anchors with about 143 tonnes. This preview shows how piping engineers give it room to grow.

Item Value
Free growth, 30 m, 20 → 180 °C ΔL = 57.6 mm
Fully restrained stress 390 MPa (1.62 × yield)
Anchor load 1,403 kN ≈ 143 t
Expansion loop legs (guided cantilever) ≈ 3.8 m, SA = 207 MPa

Typical values: α 12×10⁻⁶ /°C, E 203 GPa, yield 241 MPa. Confirm loop sizing in pipe stress software.