Piping Draftsman must be able to draw a piping system Drawings shall made in metric units only.ĭrawings shall be drawn to standard scales.Įxtended dimension lines with arrows shall be used for dimensioning Piping Drawings This means that the elevation is shown above the plan.Īll other details shall be in first or third angle projection. Plan and elevation shall be in first angle projection. The drawing sheet sizes shall be any of the following.Īs far as possible drawings shall be made in the computer using AUTOCAD. Pipelines above 300NB are represented by double line methodĭimensions for the double line method are marked to the centre line of the pipe.ĪUTOCAD software is used for drafting Methods of Representing Piping SystemsĪ piping system drawing may be represented by the following three methods Single line representation is used up to 300NB. Single line symbols used in small-scale drawings and also used when the speed of execution is important.ĭouble line method in which double lines are drawn and spaced to represent the scaled nominal outside diameter of the pipeįlanges are drawn to scale and face to face dimensions of flanged valves represent the actual scaled dimensions of the valve Piping SymbolsĮvery symbol has a definite meaning as has every line.
Hence all piping designers to know about piping drafting basics. Inputs are required from various departments.ĭrawings generated by piping department contains information pertaining to different departments. Requires basic drafting knowledge of machine drafting, architectural drafting, map drafting.Ĭonsumes the major portion of the total design drafting manhours for process plants. This needs piping drafting basics, which covers in this blog. Piping drafting basics stands out as one in which the draftsman has great opportunities to express his knowledge of the uses of pipe and the best methods of representation.
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