Dear sir,
As all of you knows that in high temperature application piping, we used heat tracing below insulation to maintained the heat or to avoid the heat loss.
I want to know that in low temperature application piping line, what to do ? (in place of heat tracing)below cold insulation(PUF)...
Dear sir,
As per API 650, differential settlement is 13mm per 10 metres of circumference.
Does it means that 13mm on every quadrant or increase from qudrant to quadrant.
Example: For 20 metre Dia Tank, from 0 to 180 degree, max differential settelment is 39mm.
Pls clear.
Ask if any doubt in...
Dear sir,
If we are going to weld the 6mm and 20mm thk carbon steel plates, with suitable electrode.
Then, which plate will bend more?
Whether, 6mm or 20mm plate?.
Normally, we say that 6mm will bend more.
But my question is, in 20mm plate our metal deposition is more than as compared to 6mm...
Dear experts,
As we Know that, quenching is process of rapid cooling.
Annealing is the process of heating to particular temperature and allowed to cooled in furnace.
My query is for stainless steel, normally done solution annealing, In stainless steel also we do the Rapid...
Dear sir,
If we see the TWI- Job knoweldge 103, there is table as shown below.
Table 1 Typical compositions of some austenitic stainless steel alloys
ASTM No.
(type) Composition wt% Microstructure
C (max) Si (max) Mn (max) Cr Ni Mo Others Austenite - A
Ferrite - F
304 0.08 0.75 2.0 18/20 8/11...
Dear sir,
As we know that sensetization problems arises in mostly 316, 316L, 304 ( 3XX) series.
And sensetization usually occurs at 450 to 850oC.
My query is that during welding, temperature goes to 1020oC approx.
Then how sensetization occurs in weld metal when every weld goes through the...
Dear sir,
To joint the threaded MS pipe, sealant is better or Teflon tape application is good?
Available market sealant are holdtite of pedilite, etc.
Pipe application is of water line and air line
Pls suggest.
Regards
Prasad Rode
Dear sir,
As in operation, we check pressure vessel thickness in every six months and hydro in every year, as per form 11 of pressure vessel.
Is any checking of piping and tanks in periodic way?
Pls suggest if any.
Regards
Prasad Rode
Dear sir,
Good afternoon!!!.
Coming back, after long time period.
My query is : when the impact requirement is mandatory?.
At which temperature or from which temp. impact requirement is starts.
OR it depends on thickness of material?
Pls give the reference of code.
Regards
Prasad Rode
Dear experts,
In manufacturing of austentic stainless steel like 316, 304 etc,
These pipes goes through the process of solution annealing or quenching and tempering.
Regards
Prasad
Sir, I have pipe of P5 grade, so, PWHT is mandatory. Acc B31.3 and table 331.1.1 PWHT hr/inch. It says for min. 1 hr. But my query is that if thk is 7.11 or less than 25mm then how to decide holding time.
But if answer is minimum 1 hr is required.
Then my query is But just clearing my doubt...
Dear sir,
Normally, we find many torque chartare available for different fasteners and from different manufacture.
Is there any standard chart available or we have to go as per manufacturer recommendation for torque application.
Regards
Prasad Rode
Dear sir,
We are doing the piping work as per B 31.3.
i have two queries
1) What will be the longest length of pipe line allowed for hydrotest.
2) what will be the allowance in between the working temperature as per secification and hydrotest temp.
Example: working temp of line is 37 degree...
Dear sir,
Myself, Prasad Rode, B.E. Production, having more than 5 years of experiences in welding.
I want to know is there any National level certification course in INDIA, ( like AWS i.e. from american society), which provide and approve the welding inspector on national level.
Pls guide...
Dear sir,
In welding of dissimilar material, as per code we used the consumable of lower grade to weld the metal.
My question is that can strength of lower grade consumable will not affect the strength of higher grade material.
In general sense, Higher grade will be preferable. (which will...
Dear sir,
I want to know that, as per sub section 452.1 (B) of ASME Sec IX, what the "All" refer.
Pls find the attched file.
Regards
Prasad Rodehttp://files.engineering.com/getfile.aspx?folder=058dceba-6159-42a2-a939-92983957b1c1&file=ASME_Sec_IX.docx
