L51759 Centerline Segregation in Plate and Strip for Linepipe Produced from Continuously Cast Slabs

Segregation in plate and linepipe can have an adverse effect on the mechanical properties, weldability and performance of plate and linepipe.

The present study was initiated as a result of field reports concerning incidents of severe chemical segregation in linepipe intended for use offshore. This research was initiated to develop a better understanding of the extent of segregation-related problems and to develop methodologies or tests which could be imposed by purchasers to eliminate future occurrences. The research was undertaken in three separate tasks as follows:

Task I Survey of pipeline industry experience, or incidents, involving segregation problems in continuously cast product.
Task II Survey of available means for controlling and monitoring of segregation and identification of methods suitable for detailed evaluation.
Task III Evaluation and technical assessment of promising segregation monitoring methods identified in Task II.