Figure 20-1. Preparation of edges.
Figure 20-2. Weld contours.
Section 11. WELDING LIMITATIONS
20-8 may be repaired by welding, provided the welded
Unless otherwise provided, welding by either the electric
metal joint equals or exceeds the physical properties of
or oxyacetylene process will be permitted on parts within
the section welded. Where it is permissible to weld
the limitations referred to, except that parts made of
malleable iron parts, it is mandatory to use the
high alloy steel subject to severe brittleness must not be
oxyacetylene (or equivalent gas) bronze welding
welded nor have fusion heats applied to them. Heat-
process for making repairs in sections subject to tensile
treated carbon steels must not be welded nor have
For malleable iron sections subject to
fusion heats applied to them unless such parts can be
compression stresses only, it will be permissible to use
heat treated again (duplicating the original heat
the arc-welding process. Care must be exercised to
treatment) after welding to restore former properties.