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6G & 6GR welder qualification

6G & 6GR welder qualification

(OP)
Dear All,
I have concerns refer to AWS D1.1 table 4.10. If we qualify the 6GR welder by using fig 4.27 pipe, it qualifies ALL position under plate CJP joint. While under Pipe butt weld joint 6GR welder not qualified to weld root without backing/ two sides without back gouging ( AWS D1.1 table 4.10 note d). If in the production we have plate butt weld weld is only one sided fullpen weld, can we expect the 6GR welder can produce the good and uniform root penetration in this case while during the qualification test visual acceptance 4.9.1 T.K.Y melt thru is not limited? Do you think AWS D1.1 table 4.10 not limiting the root pass without backing or back gouging in the plate butt weld same as pipe butt weld consider this joints is straight butt weld?

Thanks

RE: 6G & 6GR welder qualification

Hi Zetbe,

in my opinion For root why you do not use welder 6G for Root and continue with welder 6GR if required

Thanks n Regards

we17

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