Materials & Welding

Does anyone know of a pre-qualified WPS for welding SA 335 P-11 Piping to 304 S.S fittings? -- To post to this group, send email to materials-welding@googlegroups.com To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com For more options, visit this group's bolg at http://materials-welding.blogspot.com/ http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm   The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents. --- You received this message because you are subscribed to the Google Groups "Materials & Welding" group. To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out .   ...

If your weldor is qualifying per ASME Section IX, then the use of alternate base metals is discussed in QW-423.1.  The combination you state below is permissible and weldor is qualified.    According to retired committee member I know, the rational is that weldor is only trying to show the ability to deposit sound weld metal.  The previously performed PQR established that the actual base metal-weld metal combination possessed the required metallurgical properties.  Therefore, the only important issue is that the base metal be sufficiently compatible with the filler metal to allow the weldor qualification coupon to be tested.     John A. Henning Welding & Materials   From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of ali.himayat@gmail.com Sent: Monday, April 29, 2013 11:31 AM To: materials-welding@googlegroups.com Subject: [MW:17592] welder is valid   whether welder is valid if WQT done o...

Dear, Factors 1.3 or 1.5 or 1.25 or 1.1 etc. is temperature correction factor included in hydro or pneumatic pressure determination. Now why this is required to include ? Because vessel will get operated at higher temerature at that time material will be weak. At ambient or test temperature material will be strong. So to take effect of weakend material at operating temperature we proportiantely increases testing pressure. It depends on allowable stress criteria we followed while detrmining allowable stress as per any code. On Saturday, April 27, 2013 4:32:02 PM UTC+5:30, nishant wrote: Why hydrotest pressure is taken 1.3 times of design pressure? What is the criteria that fixes the term 1.5 times or 1.25 times, etc.??? Thanks in advance, Nishant nair Sent from Yahoo! Mail -- To post to this group, send email to materials-welding@googlegroups.com To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com For m...

Dear Experts,   Here our contractor fabricated the ducts for FDA.   To examine the weld quality Kerosene leak test to be done.   1.Anybody having the procedure for Kerosene Leak test.   2.For duct welding other than Kerosene test is available?   Please Suggest me.   Regards, Balaji -- To post to this group, send email to materials-welding@googlegroups.com To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com For more options, visit this group's bolg at http://materials-welding.blogspot.com/ http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm   The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents. --- You received this message because you are subscribed to the Google Groups "Materials & Welding" group. To unsubscribe ...

My Dear Friend  Please Refrer En 15609 for WPS Preparation .                     En 15614 for WPQR Preparation  On Mon, Apr 29, 2013 at 11:42 AM, Lab < lab@cochinshipyard.com > wrote: Dear Ady loy,   Please find attached, may be useful for you.   Regards, A Meganathan ----- Original Message ----- From: adyloy To: materials-welding@googlegroups.com Sent: Sunday, April 28, 2013 12:14 PM Subject: [MW:17575] WPS, PQR as per BS EN ISO 15614-1 Anybody Can anybody assist me to prepare or how to carry out WPS, PQR WQT as per BS EN ISO 15614-1 Material : SA 106 Grade B, Pipe : 6" OD Sch 80, Weld Process : GTAW+SMAW For Chill Water Project. Pls furnish format if possible and requirement of Mech Test, NDT etc to qualify as per this standard. Thanks & Rgds Ady loy -- To post to this group, send email to materials-welding@googlegroups.com To unsubscribe fr...

Dear Experts,                      As per B31.3  a)  In the case of branch connections, metal (other than weld metal) added as reinforcement, whether an integral part of a branch fitting or attached as a reinforcing pad or saddle, shall not be considered in determining heat treatment requirements.  Heat treatment is required, however, when the thickness through the weld in any plane through the branch is  greater than twice the minimum material thickness  requiring heat treatment, even though the thickness of the components at the joint is less than the minimum thickness . The question is what if thickness of components at joint like Tb ( branch pipe )or Th( header) is greater than the minimum thickness requiring PWHT. governing thickness would be based on weld metal through groove or Tb or Th if all are above minimum thickness requiring PWHT. it is a  general  question and i would be glad to ...

whether welder is valid if WQT done on P1 to P1 with ER308 (F6 A5.9), autual welding production WPS is P8-P8 with filler rod ER308. Please answer. -- To post to this group, send email to materials-welding@googlegroups.com To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com For more options, visit this group's bolg at http://materials-welding.blogspot.com/ http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm   The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents. --- You received this message because you are subscribed to the Google Groups "Materials & Welding" group. To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com. For more options, vi...

Lincoln’s STT process and Miller’s PipeWorx are both short circuiting arc transfer mode GMAW.  The difference is a high level of control on the amperage and voltage to quiet the arc.  However they are still short arc and so must follow the follow the ScIX rules applied to that process.    For welder qualification bend tests are required because lack of fusion defects at the root may not be detected by radiography.     John A. Henning Welding & Materials   From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of M.A.Samdani Sent: Sunday, April 28, 2013 9:26 AM To: materials-welding@googlegroups.com Subject: [MW:17584] Difference between GMAW-S and GMAW-STT   Dear Experts,   Will we treat GMAW-Surface Tension Transfer (Lincoln Patented) mode exactly like GMAW-Short Circuit mode?   For GMAW (STT), welder can  be not qualified on the basis of Radiography as per QW-304-ASM...

Sir, Thanks for your response. Can you give any reference for “ if it delay not advisable to tack weld and keep for longtime. 2.5minutes/mm holding time   ”   S.Binoy   From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of kannayeram gnanapandithan Sent: Monday, April 29, 2013 10:59 AM To: materials-welding Subject: Re: [MW:17585] Pre heat requirements for tack welding in P91   1.yes,but it is not good practice to tack weld on the job. if u take full welding immediately after tack weld it is ok, if it delay not advisable to tack weld and keep for longtime. 2.5minutes/mm holding time  Pandithan Welding Consultant   On Mon, Apr 29, 2013 at 11:56 AM, Lalu r p < lalucpt@gmail.com > wrote: Dear Binoy    When I was working in a power project in India as per Client's Requirement for P91 joints we used to keep the joints on external clamps and weld directly after the proper p...

Dear sir,   We qualified welder by TPI For gmaw STT.   REGARDS   DINESH   From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of M.A.Samdani Sent: Sunday, April 28, 2013 6:26 PM To: materials-welding@googlegroups.com Subject: [MW:17584] Difference between GMAW-S and GMAW-STT   Dear Experts,   Will we treat GMAW-Surface Tension Transfer (Lincoln Patented) mode exactly like GMAW-Short Circuit mode?   For GMAW (STT), welder can  be not qualified on the basis of Radiography as per QW-304-ASME IX?   please comment.   Regards, Ali Samdani -- To post to this group, send email to materials-welding@googlegroups.com To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com For...

1.yes,but it is not good practice to tack weld on the job. if u take full welding immediately after tack weld it is ok, if it delay not advisable to tack weld and keep for longtime. 2.5minutes/mm holding time  Pandithan Welding Consultant On Mon, Apr 29, 2013 at 11:56 AM, Lalu r p < lalucpt@gmail.com > wrote: Dear Binoy  When I was working in a power project in India as per Client's Requirement for P91 joints we used to keep the joints on external clamps and weld directly after the proper preheating and purging.for tubes as well as pipes we followed the same method.Direct tack welding was not allowed by the client.Correct me if i am wrong. Thanks &Regards LALU R.P On Sun, Apr 28, 2013 at 10:39 AM, Binoy Soman < binoy.spp@daelim.co.kr > wrote: Dear Experts,   Regarding the subject mentioned, kindly clarify my following doubts. (a)     Preheating required for P91 as per B 31.1 is 200°C (mini). Does it mean that this Pre heat shall be given for tack...

Dear Ady loy,   Please find attached, may be useful for you.   Regards, A Meganathan ----- Original Message ----- From: adyloy To: materials-welding@googlegroups.com Sent: Sunday, April 28, 2013 12:14 PM Subject: [MW:17575] WPS, PQR as per BS EN ISO 15614-1 Anybody Can anybody assist me to prepare or how to carry out WPS, PQR WQT as per BS EN ISO 15614-1 Material : SA 106 Grade B, Pipe : 6" OD Sch 80, Weld Process : GTAW+SMAW For Chill Water Project. Pls furnish format if possible and requirement of Mech Test, NDT etc to qualify as per this standard. Thanks & Rgds Ady loy -- To post to this group, send email to materials-welding@googlegroups.com To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com For more options, visit this group's bolg at http://materials-welding.blogspot.com/ http://www.linkedin.com/groups/Materi...

Dear Binoy  When I was working in a power project in India as per Client's Requirement for P91 joints we used to keep the joints on external clamps and weld directly after the proper preheating and purging.for tubes as well as pipes we followed the same method.Direct tack welding was not allowed by the client.Correct me if i am wrong. Thanks &Regards LALU R.P On Sun, Apr 28, 2013 at 10:39 AM, Binoy Soman < binoy.spp@daelim.co.kr > wrote: Dear Experts,   Regarding the subject mentioned, kindly clarify my following doubts. (a)     Preheating required for P91 as per B 31.1 is 200°C (mini). Does it mean that this Pre heat shall be given for tacking also. (b)    PWHT holding time for P91 mentioned in B 31.1 is 1 hr/25 mm; minimum 30 minutes. Does it mean that if the thickness is 6/10/12.5 mm the holding time is 30 minutes & for 15 ,20,30,40 mm the holding time is 36  48,72,96 minutes respectively. (c)     I got some special heating curves for P 91 from our gro...

Dear Experts, Will we treat GMAW-Surface Tension Transfer (Lincoln Patented) mode exactly like GMAW-Short Circuit mode? For GMAW (STT), welder can  be not qualified on the basis of Radiography as per QW-304-ASME IX? please comment. Regards, Ali Samdani -- To post to this group, send email to materials-welding@googlegroups.com To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com For more options, visit this group's bolg at http://materials-welding.blogspot.com/ http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm   The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents. --- You received this message because you are subscribed to the Google Groups "Materials & Welding" group. To unsubscribe from this group and stop recei...

The hydrotest requirements are given by the largest of: a)     Design standard requirements (ASME B31.3, ASME VIII, PD 5500, EN 13445, EN 13480, etc. b)     National pressure equipment regulations.   Older – now outdated - Danish regulations required 1.3 x design pressure.   ASME typically 1.5 x pd x (fy/fy,t) – fy: Design yield stress at room temperature, fy,t: Design yield stress at design temperature) (pd is the design pressure)   The PED (Pressure Equipment Directive) in Europe as well as EN 13445 and EN 13480 reguire the largest of: a)     1.43 x Design pressure b)     1.25 x design pressure x (fy/fy,t). – fy and fy,t as above.   In Europe the PED requirements are now implemented in all national regulations.   regards Kristian   From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of...

Hi avisek.. Thnx for reply.. but I wud like to further clarify my question. Its dat I want to know as wat is the base on which this 1.5 times or 1.25 times r fixed? Not in terms of new or old equipments but y 1.5 times.. y not 2 times or 1.4 times or 1.2 times. Y dey have fixed the values to that no. only.. wats d basis?? Well its written in code is not the answer m looking for.. Sent from Yahoo! Mail on Android From: Avishek Dubey <avishek3889@gmail.com>; To: <materials-welding@googlegroups.com>; ...

nishant when we conduct the hydro test for the first time we go for 1.5 times the rated pressure and there after we go for 1.2 times rated pressure On Sat, Apr 27, 2013 at 4:32 PM, nishant nair < nishant852003@yahoo.com > wrote: Why hydrotest pressure is taken 1.3 times of design pressure? What is the criteria that fixes the term 1.5 times or 1.25 times, etc.??? Thanks in advance, Nishant nair Sent from Yahoo! Mail -- To post to this group, send email to materials-welding@googlegroups.com To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com For more options, visit this group's bolg at http://materials-welding.blogspot.com/ http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm   The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contrac...

Anybody Can anybody assist me to prepare or how to carry out WPS, PQR WQT as per BS EN ISO 15614-1 Material : SA 106 Grade B, Pipe : 6" OD Sch 80, Weld Process : GTAW+SMAW For Chill Water Project. Pls furnish format if possible and requirement of Mech Test, NDT etc to qualify as per this standard. Thanks & Rgds Ady loy -- To post to this group, send email to materials-welding@googlegroups.com To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com For more options, visit this group's bolg at http://materials-welding.blogspot.com/ http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm   The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents. --- You received this message because you are subscribed to the Google Groups "Materials...

Both are not essential variable for WPS. On Fri, Apr 26, 2013 at 10:27 AM, Aly < mhaskar.aly@gmail.com > wrote: Dear Friends, Is welding position & backing is the criteria for PQR;   Can we  use any position , with or without backing for PQR...and we don't have any restriction on above parameters       Kindly clarify as per ASME SEc IX   Ali FREE Animations for your email - by IncrediMail Click Here! ► -- To post to this group, send email to materials-welding@googlegroups.com To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com For more options, visit this group's bolg at http://materials-welding.blogspot.com/ http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm   The views expressed/exchnaged in this group are member...

You can subjected to other essential variables remain same. On Fri, Apr 26, 2013 at 10:21 AM, Aly < mhaskar.aly@gmail.com > wrote: Dear Friends   We have PQR with F7A8 EM12K from ESAB Brand ;   Can we use F7A8 EM12K from other Brands viz Bohler, Lincoln, Kiswel etc...   Is it acceptable as per SEC IX...     Ali Mhaskar     FREE Animations for your email Click Here! -- To post to this group, send email to materials-welding@googlegroups.com To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com For more options, visit this group's bolg at http://materials-welding.blogspot.com/ http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm   The views expressed/exchnaged in this group are membe...

What is your equipment? On Sat, Apr 27, 2013 at 2:02 PM, nishant nair < nishant852003@yahoo.com > wrote: Why hydrotest pressure is taken 1.3 times of design pressure? What is the criteria that fixes the term 1.5 times or 1.25 times, etc.??? Thanks in advance, Nishant nair Sent from Yahoo! Mail -- To post to this group, send email to materials-welding@googlegroups.com To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com For more options, visit this group's bolg at http://materials-welding.blogspot.com/ http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm   The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents. --- You received this message because you are subscribed to the Google Groups "Materials & Welding...