British Standards Online (BSOL). (published/12/) This standard is available from the following sources: BSI Knowledge. (published BS Identification of Pipe Lines and Service PDF PDF. BS IDENTIFICATION OF PIPE LINES AND e download as PDF File.pdf) or read online for free Download & View Bs Specification For Identification Of Pipelines And Services as PDF for freeThe shape and colour of each safety sign shall conform to BS ISO and the design of the graphical symbols shall conform to BS ISO and, w