I have to fabricate 20 identical tags in which a single spool piece of 4.2 meter long is having 16[1.5" sch160] nozzles welded on a 4" sch120 pipe [A335 P9] material.
My weld procedure calls for post heating at 300 deg C for min 1 Hr.
I will weld 4 nozzles at a time. what is the best method...
I am not that much familier with 31.1 design code.
My design temp is 750 F and design pressure is 4.1 bar.
line size is 10 inch and only 1.5" branch connection at 45 deg is to be provided. i have chosen A 106 Gr B for pipe and A105 for nozzle material.there are no circumferential or...
what is the use of plain washer in bolting joint.
I usually see all the filter vessels coming from our vendors are having plain washer at both sides of studs.
In recent supply i found them missing.
Is it mandetory to have washers at bolted joints .specifically vessels per ASME sec VIII DIV I code.
what is the acceptable level of radioactive contamination in A182 304 in "mR".
Customer spec calls that radioactive contamination should not be there. When we asked about the same customer said that you suggest us & we will confirm whether it is acceptable or not from there customer. What is...
I have a weld procedure for austenitic steel with solution annealing. now there is a requirement of ferrite Number of weld metal. Can I weld a test sample only to conduct Ferrite Number test on weld metal using the same consumable brand as that was used for PQR and add as a addenda to PQR?
I had a previously qualified PQR in which i used 12 mm thick plate for qualification.I used the same PQR for one project but same was rejected by TPI.
The reason behind the rejection was that the two mechanical tensile sample were having the thickness as 10.7 mm and 11.1 mm in test report...
I have welded two different test coupon of SA 516 GR60 TO SA 516 GR70 of 5.8 mm & 8 mm for PQR.both PQR samples requires impact test at -46 deg C per 31.3.
For 5.8 mm thk Coupon lab has prepared sample of 5mm for PM & 3.3 mm for weld & HAZ. Similarly for 8 mm coupon lab has prepared 7.5 mm for...
I had a customer spec which states that min preheat temp for material having tensile above 485 Mpa shall be 100 C. My material is LTCS A350 LF2 & A333 Gr 6.
I have a previously qualified PQR in which preheat temp was 80 C.
I submitted the same for approval & it got rejected only because preheat...
thread292-232721
what will be the final conclusion for above thread w.r.t. T limit
Will it be 0.25"- 0.75" per 31.3?
again can i use the same PQR to weld 0.5" thick 316 plate material or am i violating the supplementory essential variabe here for filler classification.
i alway get confuse as...
I am proposing a WPS to qualify a plate test coupon with E316L electrode which comes under SFA-5.4 per SEC II PART C.
What will be the F Number for the same?
Per me its F5 per QW 432 of SEC IX but our existing old wps shows F4,so i am little bit confuse.
I require 500 Nos pressure port of A 105,1/2" 3000 thredolet with EN 10204 3.1 for equipments. The equipment also need complience to PED.
I have taken a quote from one mfg but his price is too high.Now i have other idea, i have taken a quote from another mfg for forging of round rod of A105 &...
since painting is a special process. our ISO Auditor has put an NC to us that we do not have qualification record for painter .
I have a fair idea of welder qualification. is it similar to this?
Do i need to make a painting procedure specification to qualify a painter?i really don't know.
We...
I have to weld 2"sch80 A 312 TP 316L with A182 F316L Flange.The design code is ASME B31.3 & MDMT is -110 deg C. I got a PQR of P8 to P8 with Impact done at -196 deg C.The thickness of coupon was 7mm.
Fabrication drawing note shows Impact test is required per ASME B31.3 Now my question is...
I have supplied 10 pressure components on which 1" NPTF thredolet was required by drawing.
Test certificate for thredolet shows 1"NPT & hense customer has rejected all the components.
What is the difference in above two threading.
Is there any chance that above material will get accepted?
I...
in one of the project requirement customer has given a specific chemical requirement for A333 Gr 6 pipe such as C< 0.21;Mn<1.1;S< 0.01;CE< 0.41.
Now we have submitted a TC in which only Mn is 1.29 other elements were well below requirement.specially S was 0.006 & i geuss S element is most imp in...
i have to qualify a PQR for welding of A182F316\316L to A312 TP 316\316L with SAW process. what is the associated flux & wire for the same.Impact test also required at -196 deg C
i have to weld a A350 LF 3 material with itself by GTAW & SMAW process. can anybody suggst applicable consumables for both process.
Simillary i want to weld A350 LF3 with A182 F316L by GTAW only ,so want to know filler rod for the same.is it gas purging required for above cs to ss welding for...
