Abstract: Analyzed here in the paper are the technological characteristics of the medium and large diameter HFW steel pipe production line, and the factors affecting the pipe yield.In view of the fact that the customer often restricts the delivery of short-length pipes, measures have been taken to optimize steel pipe specific-length cutting operation so as to enhance the HFW pipe yield, including optimizing the purchase length of the steel coil, optimizing the abnormal stop time of the machine, and optimizing the specific-length cutting parameters.As a result, the pipe yield has been enhanced by over 1%.All the said technical measures as taken are worth spreading up.