Industry: Refined Oil Pipeline
Operating Conditions: Altitude 4,500 m, Pipe Diameter DN600, Medium: Refined Oil, Daily Temperature Difference 40°C, Permafrost Thaw-Freeze Lateral Displacement ±80 mm, Pressure 10 MPa.
Solution: Adoption of a hinged universal lateral expansion joint assembly (304 + Inconel 625), 12 waves, single-wave compensation range ±15 mm.
Results: Operated for 8 years without leakage; successfully absorbed thermal expansion and permafrost slippage, preventing pipe rack overload and weld cracking.
Results: Operated for 8 years without leakage; successfully absorbed thermal expansion and permafrost slippage, preventing pipe rack overload and weld cracking.
