Why is impact toughness so important for pipelines?
1.Resisting Low-Temperature Brittleness
Carbon steel's toughness decreases dramatically at low temperatures. Impact testing directly simulates low-temperature service conditions, ensuring sufficient toughness reserves.
2.Inhibiting Crack Growth
High-impact materials absorb more energy, preventing the rapid propagation of existing cracks and preventing ruptures in long pipelines.
3.Adapting to Dynamic Loads
Pipelines may be subjected to impact loads such as earthquakes, third-party damage, and pressure fluctuations. High-toughness steel pipes dissipate energy through plastic deformation, preventing sudden failure.
4.Improving Welding Safety
Welds and heat-affected zones are vulnerable points in pipelines. Ensuring they meet impact requirements significantly reduces the risk of weld joint failure.
