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For Fillet Welds "a" is the throat width size. The throat width should be at least x 0.7 the plate thickness of the
thinner plate.
4.1 Weld Types
For Butt Welds the work piece edges should be bevelled to approx. 30°, which gives a groove angle of 60°
(Pic. 10).
The root opening between the two work pieces should be 2 - 3 mm.
60°
(Pic. 10)
(Pic. 11)
a
Other weld types:
x-weld
J-weld
y-weld Flange weld
Let weld cool down in the ambient air, do not quench.
A joint weld must always have a good fusion at the root.
wrong
correct
(Pic. 12)
(Pic. 13)
20