Spring OST 108.764.01-80 No. 4 for pipelines of oil production facilities. For systems: fixing pipelines, high-pressure pipelines, field oil collection systems, important technological lines. A responsible spring for compensating for thermal expansion and vibration loads in pipelines. It guarantees the stability and safety of pipelines when operating under extreme pressures up to 5200 kgf, temperatures of -60°C up to +400°C and aggressive environments. The production fully complies with the requirements of the interstate standard OST 108.764.01-80. Increased cyclic stability.