It is important that when you ask a question of this type you mention what is the Construction Code that you are using or that your client is requesting or maybe you just use an X Code as a reference to justify your work.
I can recommend the Non-Mandatory Appendix R of Section VIII Div. 1 or the PWHT Tables of paragraph UCS-56 of the same Section VIII Div. 1.
Regards!.
2018-02-17 3:59 GMT-06:00 <manojmuthuraj955@gmail.com>:
Dear experts,
We are doing tube to tubesheet welding as follows
Tubesheet thk - 150mm (SA 516 Gr.70)
Tube - 30 X 2.5thk ( SA 179)
If preheating is required for this welding or not? Kindly give your comments with reference code
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Ing. José Juan Jiménez Alejandro
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