qw 403.9

[Sandeep Maan]

Dear expert

Can anybody tell me the meaning of qw 403.9

 for single pass or multipass welding  in which any pass is greater than 13mm thick, an increase in base metal thickness beyond 1.1 times that of the qualification test coupon.

[Dhamodaran]

Dear Sandeep,

If the thickness of the single pass/run is more than 13mm,then the maximum qualified thickness will be restricted to 1.1 times of the coupon thickness.

Regards

Dhamodaran

+974-7736 7260

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[kannayeram gnanapandithan]

This is to control Heat input

THANKS & BEST REGARDS

KG.PANDITHAN, AWS-CWI, CSWIP 3.1

CONSULTANT-WELDING & QUALITY

[rajesh s. mhaske ,Engineer Welding ,PUNE,INDIA]

Dear Sir,

This clause refers; for single pass and multi pass with 13mm and more deposition heat input increases and so base metal thk range is 1.1 times the qualified thk and such condition happens with SAW, GMAW, FCAW, SMAW processes only.