Preheating before welding is done to:

1.	Preheating before welding is done to:
A.	Make the steel softer
B.	Bum away oil, grease, etc. from the plate surface
C.	\[{{\nabla }^{2}}\times \overrightarrow{\nabla }=1\]
D.	Prevent plate distortion
Answer» D. Prevent plate distortion

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Preheating before welding is done to:

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