[MW:14991] A106 Gr B Pipe Lowest Temperature

Dear Experts,
We faced a small problem with one of our client, regarding the lowest temperature that Could be stand by à A105 GrB. We told him that as per ASME B31.3 We can allow up to -29 deg C. Where, according to one of his piping spec they mention for thé same to only -15 deg C.
Having a à scenario in which thé température in thé concerned Line Could reach -15 deg C, thé client asked us to replace thé pipe or provide à Third Party certificate to support that up to this température of -15 deg C, there'll be on problem.
My questions are:
1-As per Asme, is there any susciptibility of the -29 deg in relation to pipe WT (3/4" limit)?
2-Could thé MTC cover that avoiding the TP?
3-What is our proposal to settle this issue

Many thanks

Envoyé de mon iPad

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