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Can API-5CT Pipe Produce on A-R Hot Rolling Mill Line?
Jan 22, 2018

  As per standard API-5CT, if there isn’t any special requirement, the finished products should be normalized condition (normalizing temperature higher than critical temperature Ac3, see below attached list). If sizing temperature lower than Ac3 temperature, the pipe will appear structural defects and can’t guarantee pipe’s physical properties. However, high alloy steel has lower piercing temperature than low-alloy steel and carbon steel (see piercing temperature table), and can’t guarantee temperature requirement when hot rolling. Although the finished product can achieve required out diameter and wall thickness, but some of them can’t pass flaw detection.