Hi, I have question for the chemical composition on the material certificate. (Material: A182-F91)
ASTM A182 standard, Table2 shows the chemical composition.
In case of F91 grade, we can see Zr 0.01 "D"
"D": Applies to both heat and product analyses.
If product analysis for the "Zr" is not...
[b]Dear sirs,
I have some question as below.
Applicable code is ASME B31.1, and a dummy pipe (just support to pipe spool) is fillet-welded on the pipe spool.
As i know, ASME B31.1 just shows some acceptable illustration only for the branch connection.
Queation)
1. Even if dummy pipe is not...
Dear all.
I have question for the EFW pipes.
I think EFW(electric fusion welded) pipes are made by GTAW, SAW, SMAW.., etc. welding process(with filler metal).
1. Is it possible to make EFW pipe with no additional filler metal?
2. in this case, is this ERW?
3. In case of stainless steel pipes...
Dear all
I have some questions for butt welding type.
Please understand that I don`t know how to attach reference photos in this site.
End preparation of two members(a & B) are as below description, and only "(W)" mark are welding(PJP) point.
In this case, is this welding belong to butt...
Dear all
I have some questions for welding type for extended bonnet.
Please understand that I don`t know how to attach reference photos in this site.
End preparation of two members(a & B) are as below description, and only "(W)" mark are welding(PJP) point.
In this case, is this welding tpye...
Hi Everyone.
I`ve already read many threads and kind reply for passivation, but i have still query for differece between acid cleaning and pickling & passivation as belows.
1. Is acid cleaning same as pickling & passivation ?
Furthermore, can i know how ASTM 380 code explains acid cleaning...
Dear XL83NL & SJones
Applicable specification is API 5L.
I thick applicable pipe size which can be impact tested is to be larger than 4 1/2 inch according to API 5L table 14.
Is it correct??
Dear All,
I have question for impact test requirement for API 5L B (PSL-2)pipes
Could you please answer for me which pipe size can be impact tested?
1. In case of small size pipe, can be possible?
2. regarding impacte test size, is there any discrepancy with A370?
It would be highly...
