Conventional Breaks Symbols of Pipe or Tubing without Cutting Diameter Small 320×85 Medium 640×171 Large 1024×273 Download TIFF Original 2400×640 | (106.1 KB) Description A shortcut drawing pipe or tubing conventional break to draw a pipes and tubes by shortening the length of the bar without the diameter cut. Keywords bar, bars, Conventional Breaks and Other Symbols, cylinder, mechanical drawing, pipe, pipes, symbol, symbols Galleries Mechanical Drawing Conventions Source: French, Thomas E A Manual of Engineering Drawing for Students and Draftsmen (New York, NY: McGraw-Hill, 1911)