![]() ![]() Rolling or otherwise called as offset gives us the exact detail of change in direction of pipeline, Spool number are sub divisions of Line number given during fabrication to facilitate transportation of pipelines, the spools are connected on-site to complete the line. Line number is given to each individual pipe line and the number is applicable for its whole length, until it joints to another pipeline or a equipment. ![]() We shall learn from the basics, Directions:ĭirection symbol is given on top of Pipe Line Isometric drawing to determine the directions of pipelines
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