Materials & Welding

Hi Tarek   Please refer the following standard: BS 7570 - code of practice for validation of arc welding equipment. After reading this standard you have to write your own company procedure and include in QA manual. Visit our group's blog at http://materials-welding.blogspot.com/  wherin this same topic has been discussed in the past.   Regards   Prem S Nautiyal Mobile     +91 9004063879 / 9769316004 --- On Mon, 10/31/11, Tarek Yehia <t.yehia2009@gmail.com> wrote: From: Tarek Yehia <t.yehia2009@gmail.com> Subject: [MW:12800] Welding Machines Calibration To: materials-welding@googlegroups.com Date: Monday, October 31, 2011, 6:22 PM Dear Experts, can any body tell me what is the recommended procedure for a/m subject and provide me with some written procedure or work instruction but should be based on applicable standard or suitable reference.  -- Best regards,   Tarek Yehia -- To post to this group, send ...

My dear friend regarding to your question about calibration of welding machine and another device in welding you can see these standard: ISO 17662 BS 7570   WITH BEST REGARDS --- On Mon, 10/31/11, Tarek Yehia <t.yehia2009@gmail.com> wrote: From: Tarek Yehia <t.yehia2009@gmail.com> Subject: [MW:12800] Welding Machines Calibration To: materials-welding@googlegroups.com Date: Monday, October 31, 2011, 4:22 PM Dear Experts, can any body tell me what is the recommended procedure for a/m subject and provide me with some written procedure or work instruction but should be based on applicable standard or suitable reference.  -- Best regards,   Tarek Yehia -- 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/ The views expressed/exchnaged in this group are membe...

hi dear according to your explanation i think you do not know exactly any information  aboutBS  EN I would like to inform you BS EN 287-1 is not usefull for WPS AND PQR .and oly use for welder qualification. according to EN standard you should see EN 288-1,2,3,4 for WPS and PQR and according to ISO you must see ISO 15609 for wps and ISO 5614 for PQR   WITH BEST REGARDS --- On Mon, 10/31/11, ken waterhouse <waterhouse.ken@gmail.com> wrote: From: ken waterhouse <waterhouse.ken@gmail.com> Subject: [MW:12801] BS EN 287-1 WPS vs. ASME IX WPS To: "Materials & Welding" <materials-welding@googlegroups.com> Date: Monday, October 31, 2011, 4:42 PM Hi, Just started a new job as welding supervisor. Aside from lots and lots of other crap that is wrong with the way the company is doing things at the moment, they have such a scattered array of WPS's in both ASME IX and BS EN 287-1 that it is almost impossible to collate and use all the information. Our big...

Hi, Just started a new job as welding supervisor. Aside from lots and lots of other crap that is wrong with the way the company is doing things at the moment, they have such a scattered array of WPS's in both ASME IX and BS EN 287-1 that it is almost impossible to collate and use all the information. Our biggest client (national electricity supplier) is shifting to an entirely BS EN 287-1 controlled system, from a mix of ASME and BS EN, which means that we as a subcontractor of theirs must do the same. I'm busy working through the WPS's available to me so far and trying to relate them to one another, to see where we need to formulate completely new WPS's and where we can trans-code them to their equivalents. Also just to get the list of all of them in one place. What I'm hoping is that someone out there has done something similar to this before and how you approached it. If it helps at all, our BSEN WPS #'s look like this S B 3 03. 8 (20) S (SMAW, Butt, material...

Dear Experts, can any body tell me what is the recommended procedure for a/m subject and provide me with some written procedure or work instruction but should be based on applicable standard or suitable reference.  -- Best regards,   Tarek Yehia -- 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/ 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.

Dear kannayeram, Is there any hand book or reference standard available for those quantities of Si and Al you mentioned?   Regards On Sun, Oct 30, 2011 at 4:56 PM, kannayeram gnanapandithan < kgpandithan@gmail.com > wrote: Si content shall be minimum 0.1 % or Al shall be minium 0.03% in case of fully killed steel verified by TC   On Sat, Oct 29, 2011 at 5:14 PM, meisam shokri arfaei < meisamshokri@gmail.com > wrote: Dear experts, I have a steel which marked as A516 Gr.70. I checked the metallugraphic structure and the microstructure is same as both semi and fully killed steel. (In SA516 it is defined that the quality grade shall be fully killed). Now my question is:   How can I find that this steel is fully killed or semi killed? Can anyone introduce any reference standard or handbook to differs between these two quality grades and also a test procedure for that purpose?   Regards -- M. Shokri Arfaei International Welding Engineer (IWE) ASNT NDT Lev...

ER 309LSi(DCEN) FOR ROOT WELD On Wed, Oct 26, 2011 at 6:06 PM, khemici badri < khemicib@yahoo.fr > wrote: Hi;   I think that is better to use the  E308H-15 sticke lectrode (DCEP) to weld this grade in order to conserve a high temperature strength and creep resistance in the welded joint.   Regards   Badri   De : Roy LIU刘艺 < standardliu@hotmail.com > À : materials-welding@googlegroups.com Envoyé le : Mardi 25 Octobre 2011 14h11 Objet : [MW:12771] what filler metal can weld 1.4825 Hi, experts, A furnace equipment wants to weld material 1.4825 (Material No.), which filler metals could be applied for this?   Best regards   Roy -- 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/ The views expressed/exchnaged in this group are members personel v...

Dear Ali,   Flush type  is depend upon category, enclosed page can helps on same.   Regards, Vimal Mistry   From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of venkadesh lakshmanan Sent: 29 October 2011 20:27 To: materials-welding@googlegroups.com Subject: Re: [MW:12792] flush type   Dear Ali, All flush type connections we need to PWHT which is contact with bottom and shell plate connections that as shown in  API 650 figure 5-12.  This all requirements having in API 650 para 5.7.4 states which condition we need to do PWHT. Because we are not only  doing PWHT for flush type clean out fittings, even material group, thickness restriction, thickened insert plate also doing PWHT. I have attached that page for your reference. Please feed back to me, Regards   L.Venkadesh   On Fri, Oct 28, 2011 at 9:27 PM, Ali Asghari < asghariali@rocketmail.com > wrote: Dear Venkadesh In API650, ther...

Si content shall be minimum 0.1 % or Al shall be minium 0.03% in case of fully killed steel verified by TC   On Sat, Oct 29, 2011 at 5:14 PM, meisam shokri arfaei < meisamshokri@gmail.com > wrote: Dear experts, I have a steel which marked as A516 Gr.70. I checked the metallugraphic structure and the microstructure is same as both semi and fully killed steel. (In SA516 it is defined that the quality grade shall be fully killed). Now my question is:   How can I find that this steel is fully killed or semi killed? Can anyone introduce any reference standard or handbook to differs between these two quality grades and also a test procedure for that purpose?   Regards -- M. Shokri Arfaei International Welding Engineer (IWE) ASNT NDT Level III ERI Metallurgy Lab. Manager Tel: +98-21-66283696 Fax: +98-21-66283693 -- To post to this group, send email to materials-welding@googlegroups.com To unsubscribe from this group, send email to materials-welding+unsubscribe@google...

Based on the type of fit-up if Stub-in Run pipe thicknes or if Stub-on Branch pipe thickness. Liyakath alik A On 10/26/11, Mohamed Khaleel < smohdkhaleel@gmail.com > wrote: > Run pipe to banch connection through weldolet fitting used. i need to > know what is the joint thicknes considered for selection of WPS. For > Ex. thickness at 6" run pipe to 2" weldolet branch. > > -- > 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/ > 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. > -- To post to this group, send email to materials-welding@googlegroups.com To unsubscribe fro...

Hi, Lap joint is welded by fillet weld and if you have 1 g qualified wps / PQR then you can very well use the same for Lap joint. On Sat, 29 Oct 2011 20:20:59 +0530 wrote >Hi Welding People I am little bit confused about an issue that can i qualify lap joint with 1G groove weld wps or not? I could not found about what qualifies lap joints. Can i consider lap joint as a filled weld and qualify by groove weld? Thank for your attention Tugrulhan -- 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/ 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. Dear Sir, Thanking Y...

it can be qualified by grooved weld On Sat, Oct 29, 2011 at 5:31 PM, tugrulhan özdemir < tugrulhan9@gmail.com > wrote: Hi Welding People I am little bit confused about an issue that can i qualify lap joint with 1G groove weld wps or not? I could not found about what qualifies lap joints. Can i consider lap joint as a filled weld and qualify by groove weld? Thank for your attention Tugrulhan -- 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/ 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. -- To post to this group, send email to materials-welding@googlegroups.com To unsubscribe from this group, send...

Dear Ali, All flush type connections we need to PWHT w hich is contact with bottom and shell plate connections that as shown in  API 650 figure 5-12 .  This all requirements having in API 650 para 5.7.4 states which condition we need to do PWHT. Because we are not only  doing PWHT for flush type clean out fittings, even material group, thickness restriction, thickened insert plate also doing PWHT. I have attached that page for your reference. Please feed back to me, Regards L.Venkadesh On Fri, Oct 28, 2011 at 9:27 PM, Ali Asghari < asghariali@rocketmail.com > wrote: Dear Venkadesh In API650, there is requirement for PWHT of tanks in chapter3, but said for all flush type clean out must be stress relieved by PWHT. now i want to know, it is  applicable for all drain  that contact with bottom plate or not? Regards From: venkadesh lakshmanan < venkadeshmech@yahoo.com > To: materials-welding@googlegroups.com Sent: Friday, October 28, 2011 9:10 AM Subject: Re: [MW:127...

Hi Welding People I am little bit confused about an issue that can i qualify lap joint with 1G groove weld wps or not? I could not found about what qualifies lap joints. Can i consider lap joint as a filled weld and qualify by groove weld? Thank for your attention Tugrulhan -- 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/ 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.

Dear experts, I have a steel which marked as A516 Gr.70. I checked the metallugraphic structure and the microstructure is same as both semi and fully killed steel. (In SA516 it is defined that the quality grade shall be fully killed). Now my question is:   How can I find that this steel is fully killed or semi killed? Can anyone introduce any reference standard or handbook to differs between these two quality grades and also a test procedure for that purpose?   Regards -- M. Shokri Arfaei International Welding Engineer (IWE) ASNT NDT Level III ERI Metallurgy Lab. Manager Tel: +98-21-66283696 Fax: +98-21-66283693 -- 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/ The views expressed/exchnaged in this group are members personel views and meant for educational purposes only...

Hello, Please see the article on "LME". It would be of interest to you.Embrittlement typically initiates in the liquid phase, low melting phases will generally segregate along the grain boundary upon solidification and initiate cracking. The elements mentioned below are common culprits, but I've come across "copper induced " embrittlement also. Usually one has to be careful on these elements either while welding or during application of paints or any high temperature applications. Thanks. Pradip Goswami,P.Eng.IWE Welding & Metallurgical Specialist & Consultant Ontario,Canada. Email-pgoswami@sympatico.ca , pgoswami@quickclic.net -----Original Message----- From: pradip kumar sil [mailto: pradipsil@gmail.com ] Sent: Wednesday, October 26, 2011 3:18 AM To: materials-welding@googlegroups.com Cc: pgoswami Subject: Liquid metal Dear All, How can i interprete for liquid metal ASME B-31.3 appendix F323.4 C article (3) the susceptibility to intercrystalline attac...

Dear Venkadesh In API650, there is requirement for PWHT of tanks in chapter3, but said for all flush type clean out must be stress relieved by PWHT. now i want to know, it is  applicable for all drain  that contact with bottom plate or not? Regards From: venkadesh lakshmanan <venkadeshmech@yahoo.com> To: materials-welding@googlegroups.com Sent: Friday, October 28, 2011 9:10 AM Subject: Re: [MW:12786] flush type Dear Ali,              Flush type clean out using for drain the inside liquid completely. Because this elevation will be the same bottom plate elevation. but the nozzles all having some height from the bottom. L.Venkadesh On Thu, Oct 27, 2011 at 4:34 PM, Ali Asghari < asghariali@rocketmail.com > wrote: Dear All is there a specific meaning for flush type cleanout in API650? if yes, what is diffrence between it with other nozzles? Regards -- To post to this group, send email to materials-welding@googlegroup...

Dear Feyzullayev It is impossible to quench the stainless steel 304. Because it is already a austenitic steel and what quenching ever you do it will be still austenitic so there will be no increasing in hardness 2011/10/27 Elshan Feyzullayev < elshan_f@hotmail.com > Is it possible to quench the subjected steel?   best regards, El. -- 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/ 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. -- Tuğrulhan ÖZDEMİR Metalürji & Malzeme Müh. (Y.T.U.) U.Kaynak Mühendisi (I.W.E.) -- To post to this group, send email to materials-welding@googlegroups.com ...

Dear Ali,              Flush type clean out using for drain the inside liquid completely. Because this elevation will be the same bottom plate elevation. but the nozzles all having some height from the bottom. L.Venkadesh On Thu, Oct 27, 2011 at 4:34 PM, Ali Asghari < asghariali@rocketmail.com > wrote: Dear All is there a specific meaning for flush type cleanout in API650? if yes, what is diffrence between it with other nozzles? Regards -- 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/ 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. -- To post to this group, send email to materials-welding@googlegroups.com To ...

Yes.    For 304L quenching may actually be advantageous from a corrosion standpoint by minimizing M23C6 ppt. formation (yes – even L grades will form some grain boundary carbide during welding).  It may be disadvantageous with regard to distortion.  If highly restrained and insufficient weld metal in place may cause cracking.  You would have to supply more information.    Accelerated cooling to get interpass temperature down will likely have no effect – I have used water soaked rags to cool austenitic stainless steel welds from around  600F (315C)  to 250F (120C) with no noticeable effects.   John A. Henning Welding & Materials   From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Elshan Feyzullayev Sent: Thursday, October 27, 2011 5:10 AM To: materials-welding@googlegroups.com Subject: [MW:12781] quenching of stainless steel AISI304L   Is it possible to quench t...

Dear All is there a specific meaning for flush type cleanout in API650? if yes, what is diffrence between it with other nozzles? Regards

Dear Mohammed, That is 2 " weldolet thickness. Thanks, K.Rajagopal On Wed, Oct 26, 2011 at 3:55 PM, Mohamed Khaleel < smohdkhaleel@gmail.com > wrote: Run pipe to banch connection through weldolet fitting used. i need to know what is the joint thicknes considered for selection of WPS. For Ex. thickness at 6" run pipe to 2" weldolet branch. -- 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/ 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. -- To post to this group, send email to materials-welding@googlegroups.com To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.co...

Mohamed, Regarding Branch connection PWHT check ASME B 31.3 ..331.1.3 (a) and 328.5.4 d for branch connecton sketches also refer below article from B 31.3 Regards Mano 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, (38 mm) 2011/10/26, Mohamed Khaleel < smohdkhaleel@gmail.com >: > Run pipe to banch connection through weldolet fitting used. i need to > know what is the joint thicknes considered for selection of WPS. For > Ex. thickness at 6" run pipe to 2" weldolet branch. > > -- > To post to this group, send email to materials-welding@googlegroups.com > ...

Is it possible to quench the subjected steel?   best regards, El.

In this case you have to consider branch pipe's wall thickness On Thu, 27 Oct 2011 12:42:07 +0530 wrote >Run pipe to banch connection through weldolet fitting used. i need to know what is the joint thicknes considered for selection of WPS. For Ex. thickness at 6" run pipe to 2" weldolet branch. -- 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/ 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. Dear Sir, Thanking You, Honesty is the best Policy With Warm Regards, Muthu Barathi P Mobile No:00962788269821 (Jordan) 00962775401951 Treat yourself at a restaurant, spa, resort...

Dear all, is there any differences between temperature application for SS304 & SS304L? I found somewhere that SS304L can be used from absulte zero to 850 deg F and SS304 from absulte zero to 1500 deg F. is it correct? Regards, -- 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/ 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.

hai experts ...   i want to know , how can i propose wps for P11 to SS (TP 321)...with thickness 24.5 mm thickness ... is it require buttering and PWHT,if it have , then how can i do ..?.. once time i have done that first we done butterin on alloy and send to PWHT ... After PWHT we make the joint and done welding ... but here it my client is telling no need PWHT . IF IT IS NOT DOING PWHT WHAT PROBLEM WILL COME .... AND WHICH FILLER WE CAN USE FOR THIS JOINTS ... Thanking you ... NOORUDHEEN P HAMZA -- 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/ 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.

Hi;   I think that is better to use the  E308H-15 sticke lectrode (DCEP) to weld this grade in order to conserve a high temperature strength and creep resistance in the welded joint.   Regards   Badri   De : Roy LIU刘艺 <standardliu@hotmail.com> À : materials-welding@googlegroups.com Envoyé le : Mardi 25 Octobre 2011 14h11 Objet : [MW:12771] what filler metal can weld 1.4825 Hi, experts, A furnace equipment wants to weld material 1.4825 (Material No.), which filler metals could be applied for this?   Best regards   Roy -- 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/ The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decision...

Dear Roy,   Please provide the more details about materials (stad, code, compositions) and applications.   Regards Amit Pahuja On Tue, Oct 25, 2011 at 9:11 PM, Roy LIU刘艺 < standardliu@hotmail.com > wrote: Hi, experts, A furnace equipment wants to weld material 1.4825 (Material No.), which filler metals could be applied for this?   Best regards   Roy -- 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/ 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. -- To post to this group, send email to materials-welding@googlegroups.com To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups...

Run pipe to banch connection through weldolet fitting used. i need to know what is the joint thicknes considered for selection of WPS. For Ex. thickness at 6" run pipe to 2" weldolet branch. -- 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/ 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.

By any chance does your project spec calls for "Stabilization anneal". It's a post fabrication anneal(850-900 deg C)applied for stabilized stainless steels to improve the post fabrication corrosion resistance. If you could provided more details, I could write to more about the pros and cons of this method. Thanks. Pradip Goswami,P.Eng.IWE Welding & Metallurgical Specialist & Consultant Ontario,Canada. Email-pgoswami@sympatico.ca , pgoswami@quickclic.net -----Original Message----- From: pradip kumar sil [mailto: pradipsil@gmail.com ] Sent: Wednesday, October 26, 2011 2:17 AM To: materials-welding@googlegroups.com Cc: pgoswami Subject: PWHT in TP 321 Dear Everybody, First of all Wise you a happy diwali to you & your family. In my project specification says ASTM A 312 TP 321 has PWHT. My question is why we will do TP 321 needs to do PWHT because this material have high Cr/Ni as well as Ti. Regards Pradip -- To post to this group, send email to materials-welding@g...

Dear Antony 1 - Purpose of evaluating microstructure in mild steel is to understand weather some undesired phases produced during welding or not, however in mild steel producing such phases (such as martensite) is not a probable problem. The other purpose is to see how weld metal, HAZ and base metal arranged. 2 – As far we know, HAZ consist of three zones. The first is recrystallization part, the second is coarse grain zone and the third is fine grain zone. Each part is important in situ. For example unexpected growing of grains in recrystallization and coarse grain zones will affect impact properties of steel. Also dimension of these three parts is important. 3 – If carbon equivalent goes to increase, the presence probability of martensite will increase also. Some precautionary actions shall assist in welding, such as preheating.   Regards On Tue, Oct 25, 2011 at 1:11 AM, Antony Jopen < antonyjopen@gmail.com > wrote: Hi,  Could someone throw some light on the th...

Dear Mr. Vichare, Pls, provide code referance of Minus 15% to + 30 % film density veriation is permitted. Regards Sil On 10/25/11, Ramchandra vichare < vicharerke@indiatimes.com > wrote: > Dear Friends, > > Film density veriation permitted by code is Minus 15% - Pluss 30% (i.e. may > be gama or xray) but suppose client specifies special requirement (in > writting) related to density you must follow clients requirement. > > Regards, > > RK Vichare > > ----- Original Message ----- > > From: Jean Staton > > To: materials-welding@googlegroups.com > > Sent: Mon, 24 Oct 2011 17:47:55 +0530 (IST) > > Subject: RE: [MW:12760] RT density > > > > > > > > > > > > > > > > > > > > > > The only where I see that 1.3 is allowed is for composite viewing. > > > > > > > > > From: materials-welding@googlegroups.com > [mailto: materials-welding@googl...