STEEL TUBE PRODUCTION CONTROL METHOD

摘要

There is provided a production management method for steel tubes and pipes produced through a plurality of production processes, including:
a step of machining a matrix code, which encodes tube or pipe information, in a tube or pipe end by a laser beam so that the central angle of width of the matrix code in a circumferential direction of the tube or pipe is 30° or smaller; and
a step of reading the matrix code automatically by using a linear sensor type camera, wherein
through reading the matrix code, the production history is managed by identifying and recording the production information and quality information corresponding to each steel tube or pipe for each tube or pipe number, and
the tube or pipe information is retrievable as necessary.