Dear
this is a problems on the RT films of piping welds， which one can give me a reasonable explanation.
on the films one indication （a dark line on the root weld edge ares ）looks like lack fusion ，but as my and my friend many year experience， this is not the lack fusion.
the welding process...
dear,
I calibrated a detector on 10th Feb 2014, with a enclosed tag that addressed the due time is 10th Feb 2015, But after calibration the detector was not used anymore, only stored in the initial box and kept an calibration status. from 6th May 2016, we start to used this detector in...
as the statement of ASME VIII-1 UG20(b）
“The minimum metal temperature used in design shall be the lowest expected in service expect xxx”，
The MDMT marked on the nameplate shall correspond to a coincident pressure equal to the MAWP”
Background: a pressure vessel,the internal pressure is direct...
Background: A PQR test coupon with 10mm thick, welded by multi-process GTAW +SMAW ,the deposit metal thickness is 3mm and 7mm respectively.
QUESTION: (1)for cold band test, TWO FACE and TWO back bend specimen will be tested to represent GTAW and SMAW deposit metal.
(2)for impact...
Dear, bro,
In ASTM material specification, each specification specifies the chemical composition of that material, shown as the fellow table,
in some column, there is a symbol ellipsis " ..." in that line, the note of this table indicates: the ellipsis " ..." represents "no requirement"...
Dear
related to the interpretation of ASME IX volum QW403.6 provision answered by ASME commission , I am so confused with this interpretation.
with the same background ,why the question(1) reply is NO, simultaneously question (2)is YES.
which proficient can give me a detailed interpretation...
