دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: heat-treating applied to metal tubular goods to ensure uniformity of the grain structure of the metal.

heating a steel pipe to a temperature above the alloy transformation temperature range and holding at the temperature for long enough to remove stored stressed from handling, forming or other fabrication.

n: a form of corrosion sometimes found in the tubing of condensate wells. It occurs in a ring a few inches from the upset. Cause of ringworm corrosion has been traced to the upsetting process, in which heat required in upsetting causes the heated end to have a different grain structure from the rest of the pipe. Normalizing prevents this condition.