Dear all,
We are fabricating some pipe spool that according to ASME B31.3, the material shall be trace as normal works in project, however, as my experial in preview project, we just need to trace for main material (fabrication material) as pipe, fitting and not for bolts, nuts, gasket etc... but now third pary company requred us to trace for all of materials that mention on drawing, so any body can help me to answer them that the bolts, nuts, gasket don't need to trace or may their requirement are correclly and I shall follow them.
Thank you very much!