Figure 13.
Hand pipe and tube benders.
b. Iron pipe.
(1) Basic considerations. At times it is more desirable to bend iron pipe
than use additional fittings to change the direction of the pipeline. There are
limits to the radius of bends and, generally, only smaller sizes of pipe are bent.
(2) Procedure.
(a) Smaller pipes are bent cold using only leverage. A hickey, which is
a simple tool for bending pipe, is made by screwing a length of pipe to the side
outlet of a T.
(b) Larger pipes are bent using bench tools and heat, the heat being
applied to the inside of the bend. A bench tool (fig 14) may be made by drilling
holes in a steel plate. Steel pins are placed in the holes to furnish the needed
leverage.
Figure 14.
Bending block and pins.
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