On Saturday, August 31, 2019 at 1:53:08 AM UTC+7, Raghul wrote:
> Welder made two coupon
> 1. Coupon with 6 mm thickness on the 1/2" pipe made by gtaw process
> 2.coupon with 15 mm thickness on 2-7/8" pipe made by gtaw+smaw process.
>
> Is the welder qualify to weld on 1/2" pipe with gtaw+smaw process for qualified thickness?
>
> Please explain
which standard for qualification?
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