Tubes may be seal welded into fittings or headers of boilers and superheaters after they have been expanded and flared, provided the material in the fitting or header does not contain carbon in excess of __________.
A
0.0035
B
0.004
C
0.0045
D
0.005
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Question 1 / 205eccefa0bacbc34ba4d46ca2
Question 1 of 205eccefa0bacbc34ba4d46ca2
Tubes may be seal welded into fittings or headers of boilers and superheaters after they have been expanded and flared, provided the material in the fitting or header does not contain carbon in excess of __________.
Tubes may be seal welded into fittings or headers of boilers and superheaters after they have been expanded and flared, provided the material in the fitting or header does not contain carbon in excess of __________.