thread725-380347
Dear Friend,
I have material API 5L X65 (450 mpa) welding to Buckle arrestor (480 mpa) welding wihout ECA (strain less than 0.4). so for all weld metal acceptance criteria Rt 0.5 should be 450 or 530 ?
DNV-OS-F101 2013 appendix C clause 303 said 'Rt 0.5 Should be instead off...
Dear All,
I need to run Qualification FCAW Shielf Shielded for TKY joint.material API 5L X 65. No impact required for this project
we have a doubt to run the qualification, like how to make a root ? I am thinking I will make combination SMAW+FCAW or GMAW + FCAW
but AWS d1.1 this is gray area...
Dear All
I need some help for understanding backing,
I have PQR qualified for GTAW(root)& SMAW(Fill+Cap)
So in my understanding according to ASME IX QW-402.4 SMAW(E 7018-1) and QW-402.5 GTAW(ER-70SG) in Production I can use my WPS with or without backing for GTAW and SMAW only applicable with...
Hi All,
I working for a Pressure Vessel Company. My SUrveyor ask me to change my WPS. I have a test Coupon THK 40 mm. My Thickness Range Qualified base metal on my MPS are 16 mm in to 200mm . According to him, I can not use 200mm on my PQR because of QW 407.2. In my PQR Soaking Time for my PQR...
Hi Everyone,
I have question regarding Subsize Specimen (Asme VIIITable UG-84.2 ,Asme B31.3 Table 323.3.4, AWS D1.1 Table 4.15 )But for now Just concentration for ASME VIII div 1 Table UG-84.2 and See UG-84(c)(5)(b).
First Question :
1. I have PQR 6 inch, schedule 40 pipe (168.3mm outside...
Dear All,
I have a Pipe which is need additional weld on Capping, Please see attached drawing(sorry for manual, I do not have autocad on my comp.)
Client request for welding based on drawing which is they sent for me, this is for structure so I assume AWS D1.1, After check with the code I...
Dear All,
I need to prepare PQR for high pressure piping B31.3 and refer to welding ASME IX ,
1. AISI 4130 welded to ASTM A487-4Q
2. ASTM A487 Gr 4D to ASTM A487-4Q
3. ASTM A487 Gr 4D to API 5L X52
By seeing all mill certificate, ASME SEC IIA, I thought A487 Gr 4D(unassigned material) & A487 4Q...
HI All,
I have some question regarding Narrow Gap Welding,
my question applicable for AWS D1.1, I need to improve Joint design from Double V Groove Weld(1/3&2/3) to Narrow Gap Welding to reduce consumable consumtion and make a faster welding
Welding Machine I used is SAW,
So Based on this...
Dear All,
I am working Pressure Vessel & Structure (EPC Company), I have an question. I have plan to qualified PQR(Based on AWS D1.1) for Position 2G,3G,4G for 1 WPS.
Welding Process, I Plan to use FCAW(GS) backing with weldmetal(Gouging) or base metal(Backing Strip). There is an advice from my...
Dear ALL
I have some case regarding PWHT. I do pwht for vessel with procedure according to ASME IIIV ucs 56. we have 4 Thermocouple put in the vessel. Unfortunately 1 Thermocouple touch 590 deg C. Since we know minimum Temperatur allow by the code ucs 56 is 595 deg C. Fortunately there is note...
Dear Expert,s
Good morning,
I have some case(bulding Pressure Vessel based on ASME IIIV Div 1 )below client give an question Please kindly help to solve :
Client said: You need Procedure to Joint Thermocouple to Pressure Vessel He show me UW-37(h) Capacitor Discharge Welding...
(Our Procedure...
Hi_experts
Can anyone explain who can do tack welding in production? I am working in pressure vessel Fabrication. I have an argue with client and show ASME VIII UW.31 C, My interpretation are for permanen welder must be do with welder qualified with asme IX but for non permanen weld can do by...
