Materials & Welding

Dear expert, Kindly what is minimum time limit between completion of welding and the hydrotest? Thanks Mahmood -- https://materials-welding.blogspot.com/ https://www.linkedin.com/groups/122787 --- You received this message because you are subscribed to the Google Groups "Materials & Welding" group. To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com . To view this discussion visit https://groups.google.com/d/msgid/materials-welding/CANV5n6iM1bqGdmtzFU4C6dsJZiNnOFpT%3DM3KUq-P1UA%2B1CS7yQ%40mail.gmail.com .

No such relationship I read. Thanks  Sent from my iPhone On 19 Jan 2026, at 6:50 PM, Mahmood Alhinai <mahmood.m.alhinai@gmail.com> wrote:  Dear expert, Kindly what is minimum time limit between completion of welding and the hydrotest? Thanks Mahmood -- https://materials-welding.blogspot.com/ https://www.linkedin.com/groups/122787 --- You received this message because you are subscribed to the Google Groups "Materials & Welding" group. To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com . To view this discussion visit https://groups.google.com/d/msgid/materials-welding/CANV5n6iM1bqGdmtzFU4C6dsJZiNnOFpT%3DM3KUq-P1UA%2B1CS7yQ%40mail.gmail.com .

Hydrogen cracking will take time like 24 to 48hr. So generally after welding 1 or 2days gap is preferable for hydro test. On Tue, 20 Jan 2026, 7:39 am 'rehan khan' via Materials & Welding, < materials-welding@googlegroups.com > wrote: No such relationship I read. Thanks  Sent from my iPhone On 19 Jan 2026, at 6:50 PM, Mahmood Alhinai < mahmood.m.alhinai@gmail.com > wrote:  Dear expert, Kindly what is minimum time limit between completion of welding and the hydrotest? Thanks Mahmood -- https://materials-welding.blogspot.com/ https://www.linkedin.com/groups/122787 --- You received this message because you are subscribed to the Google Groups "Materials & Welding" group. To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com . To view this discussion visit https://groups.google.com/d/msgid/materials-welding/CANV5n6iM1bqGdmtzFU4C6dsJZiNnOFpT%3DM3KUq-P1UA%2B1C...

Hi     Immediately you can do hydro if no NDT coverage Thanks Regards  S.Indirajith On Mon, 19 Jan 2026 at 11:50 PM, Mahmood Alhinai < mahmood.m.alhinai@gmail.com > wrote: Dear expert, Kindly what is minimum time limit between completion of welding and the hydrotest? Thanks Mahmood -- https://materials-welding.blogspot.com/ https://www.linkedin.com/groups/122787 --- You received this message because you are subscribed to the Google Groups "Materials & Welding" group. To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com . To view this discussion visit https://groups.google.com/d/msgid/materials-welding/CANV5n6iM1bqGdmtzFU4C6dsJZiNnOFpT%3DM3KUq-P1UA%2B1CS7yQ%40mail.gmail.com . -- https://materials-welding.blogspot.com/ https://www.linkedin.com/groups/122787 --- You received this message because you are subscribed to the Google Groups "Materials &...

  Once the welded joint has cooled and radiographic testing (RT) is accepted, hydrotesting may proceed. Except in cases involving special alloys or stress relieving (SR), a waiting period is required."   On Mon, Jan 19, 2026 at 9:19 PM Mahmood Alhinai < mahmood.m.alhinai@gmail.com > wrote: Dear expert, Kindly what is minimum time limit between completion of welding and the hydrotest? Thanks Mahmood -- https://materials-welding.blogspot.com/ https://www.linkedin.com/groups/122787 --- You received this message because you are subscribed to the Google Groups "Materials & Welding" group. To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com . To view this discussion visit https://groups.google.com/d/msgid/materials-welding/CANV5n6iM1bqGdmtzFU4C6dsJZiNnOFpT%3DM3KUq-P1UA%2B1CS7yQ%40mail.gmail.com . -- https://materials-welding.blogspot.com/ https://www.linked...

There is no time limit after completion of welding and hydrotest. Normally after welding the pressure joints, you need to perform NDT and some code specify the time limits between welding completion & NDT& also you perform structural attachments etc.. Thanks & Regards J.Gerald Jayakumar 0091-8838619635 On Monday, 19 January 2026 at 09:19:55 pm IST, Mahmood Alhinai <mahmood.m.alhinai@gmail.com> wrote: Dear expert, Kindly what is minimum time limit between completion of welding and the hydrotest? Thanks Mahmood -- https://materials-welding.blogspot.com/ https://www.linkedin.com/groups/122787 --- You received this message because you are subscribed to the Google Groups "Materials & Welding" group. To unsubscribe from t...