Fracture failure risk of X70 thin-wall pipeline repaired by multi-position B-sleeve welding

Key Points

• Fracture failure risk significantly increases in X70 thin-wall pipelines repaired by B-sleeve welding.
• Analysis indicates potential failure rates approaching 35% under specific stress conditions.
• Assessment of repair integrity shows critical flaws often overlooked during welding procedures.
• Implications call for enhanced repair protocols and structural evaluations to improve pipeline safety.