Question #13338
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What should be the pre - heating temperature of aluminium job for gas welding?

A.
200 Degree Centigrade - 400 Degree Centigrade
B.
250 Degree Centigrade - 400 Degree Centigrade
C.
300 Degree Centigrade - 400 Degree Centigrade
D.
350 Degree Centigrade - 400 Degree Centigrade
Explanation

No explanation provided.