progressive block sequence

progressive block sequence

[prə′gres·iv ′bläk ′sē·kwəns]
(metallurgy)
A welding sequence in which the joint is completed in sections from one end to the other or from the center alternately to both ends.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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