That is correct. However, the mechanical tube we use A511/Sa479 does not have hydrotest by the mill in its spec. So, my question is can I still use it to make pv fiitings without having the mill do the hydro test.
Since, the pv is hydro tested before its operation anyway.
By the way thanks...
No, I don't mean spool. What I mean is that the mill does a hydrostativ test for sa312 pipe. The reason they do it I think , is because the pipe may become p.v. However, we use A511/ Sa479 Mechanical tubing to manufacture fittings. Some of these fittings are used in low pressure pv.
So, my...
