Thursday, September 13, 2012

[MW:15299] Re: Welder Qualification Range for CS to alloy with same dia and thickness?

Yes He can weld. In addition to F no and P.No, Gas backing also need to be considered. only deletion of backing is essential variable

On Wednesday, September 12, 2012 6:11:36 PM UTC+5:30, Biplab Pal wrote:
Dear Experts,
 
1 welder is qualified with ASTM A 106 Gr. B with ER70S-6 (Root & 2nd Pass) & E7018(Fill & Cap) with a diameter range of 2 7/8 and above
If thickness and dia of pipe remain same, can he weld on ASTM A 335 Gr. P-9 with ER80s B8 & E 8018 B8.
Construction Code Sec-IX, 2010.

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Thanks & Regards
Biplab Pal
Mechanical Inspector (PMT)
E-mail:   bipla...@gmail.com
 
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