Q- As per ASTM E1003-13 "The gauge must be accurate to within 1 % of full scale. The gauge must read at least 1.5× but not more than 4× the maximum test pressure to be used".
Is there any standard which can permit me to use pressure gauges more than 4X hydro test pressure .
for Ex- 4Xhydro...
Dear Respected Members and Welding Experts.
i have to prepare the PWHT cycle for butt weld A 106 Gr.b Pipe joints and Tee joints with pipe and #300 wnrf flanges (carbon steel)for below section size :-
a) 2" sch 160 (t=8.74mm)
b) 2" sch xs (t=5.54mm)
c) 2" sch 40s (t=3.91mm)
As per WPS -...