Materials & Welding

Dear Experts, Please clarify my below queries regarding the impact test requirements for Piping. 1) 3 inch SA105N WNRF  impact tested at zero degrees( at mill) Celsius but MDMDT is 18 o Celsius can we use this flange with respect to ASME B 31.3( if yes please detail the reference standard and up to what temperature we can use this flange) 2) SA 234 GR WPB (90 degree elbow) MDMT is -45 0 Celsius but impact tested at Mill is -29 0 Celsius, can we use this flange with respect to ASME B 31.3. Thanks and Best Regards ? D. Santosh Tel: +971502016960 United Arab Emirates

Dear All We have to do repair and weld built up on duplex stainless steel base metal with inconel filler (ERNiCrMo15; SFA-5.14) as suggested by Client.  Process GTAW We need to qualify a procedure as per ASME section IX on DSS Round bar of 40mm Expected qualification. All duplex base metal. Weld repair thickness:all thicknesses All diameter All positons Kindly advise  1: Whether groove weld qualfication will be good option for it or any other option. 2: Whether PQR  testing is possible on round bar 3: Whether given Filler metal is suitable. 4: How to get side bend test specimen to comply Sec. IX 5: Any other test other than tensile and bend test to be done. Kindly respond with reference to ASME Sec IX. With best regards Ahmad -- 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....

Hi Procedure qualification / Welder qualification What is the different between Thickness Sec IX , API1104 & D1.1 On Wednesday, March 9, 2011 at 8:13:49 PM UTC+3, Tunisian Quality Engineer wrote: Hi all,   As per ASME sect IX table QW-452-1(b), for welder's qualified in test coupon thickness greater or equal than 13 mm, he's will be qualified to wed thickness " Maximum to be welded" May my interpretation is true ?? In this case, Can i  qualify all welder's in 13 mm thickness, he will be qualified for all thick ( PWHT is not essential variable for welders) and cover all thickness range ? Regards -- زكرياء غراب GHRAB Zakaria مسؤول عن الجودة QA/QC SENAD مشروع المحطة الحرارية ـ الوحدة الرابعة المحمدية ـ المغرب -- 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 t...

Dear Experts, Crack observed in Base material- IS 10748 gr 2 to EN45A(Tempered ). Base material thickness-4 mm Fillet size-4 mm Welding process-GMAW Filler Wire-ER70S6. Experts need your valuable suggestions. -- 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 . To post to this group, send email to materials-welding@googlegroups.com . To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/fad28ef3-c658-46ea-88c5-93f0e25242e7%40googlegr...

Dear Querist, 1) Why hydro test is carried out after covering / back filling the complete pipeline? Logic :  If it is left exposed or open, then heat transfer during the night will be fast & pressure drop due to temperature drop will also be high, which migh result in failure of hydro-test record.   2) In case of seepage, we' ll get pressure drop on gauges,but how to detect the location of leak? Logic : If the pressure continuously drops, then you may have to cancel the hydro-test, put some color dye in the hydro-test water & pump it again, open up the backfilled portion at strategic locations, repressurise it, if it is truly leaking, then one should see wetted colored soil.   The other case is when temperature drops, pump & increase the pressure to test pressure & hold it, repeat the same for 24 or 48 hrs., if it truly leaks in pipeline, then the defective portion should SWELL in size & one must get higher pressure drop compared to previous one, within the sa...

I am struggling with hardness in my SAW hardfacing flux at present i use 68/8 HCFCR and still cant go beyond 52 HRC -- 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 . To post to this group, send email to materials-welding@googlegroups.com . To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/0f198d60-f2f1-4b2a-aa0b-f798239ca51c%40googlegroups.com . For more options, visit https://groups.google.com/d/optout .

Section length also decide based on confirmation of pig manufacturer and pressure difference at high and low point or maximum and minimum On 28-Jan-2017 2:06 pm, "Lakshman Kumar B" < lakshmankumar4@gmail.com > wrote: Hi,   Please note a small correction in my earlier mail… As stated by you there is no restriction of length as per B31.8, - your statement and understanding is correct. In one of my previous project we had a limitation of 50KM and the same I shared at here. However in general doing 50KM at a single stretch is a big challenge and other parameters may not support too (particularly in INDIA) If your project specs are permitting you can do the hydro test more than 50KM also, no code restrict' s you…   Thanks & Regards, Lakshman Kumar B, +91 9440031459 .   From: materials-welding@ googlegroups.com [mailto: materials-welding@ googlegroups.com ] On Behalf Of belendine@gmail.com Sent: Monday, January 23, 2017 3:38 AM To: Materials & Welding < m...

Thanks, George. The shop is certified for the job, but they do not know for sure how to access the defect area for its removal and re-welding. Small size grinder with extendable arm, FCAW process...etc.   Best Regards, Shashank C Vagal  301, PRATHAMESH, M G Rd – Mahant Rd, Vile Parle East, Mumbai 400 057 INDIA Tel : +91 22 2611 6640 / (+91) 9821386292 /    8082395502 From: George Dilintas <dilintas@gmail.com> To: Meghanadh K <materials-welding@googlegroups.com> Sent: Friday, 27 January 2017 6:15 PM Subject: Re: [MW:25995] Thin wall, small dia tube weld repair Check ASME PCC-2-2015 2017-01-26 15:33 GMT+02:00 'Shashank Vagal' via Materials & Welding < materials-welding@googlegroups.com > : Dear all, We have repairs in a weld at 180 mm from open end on 47 mm ID x 5 mm thick CS boiler tubes. The repairs are at various depths. Access is available only from ID, approach from OD is not possible. Is there a...

Hi,   Please note a small correction in my earlier mail… As stated by you there is no restriction of length as per B31.8, - your statement and understanding is correct. In one of my previous project we had a limitation of 50KM and the same I shared at here. However in general doing 50KM at a single stretch is a big challenge and other parameters may not support too (particularly in INDIA) If your project specs are permitting you can do the hydro test more than 50KM also, no code restrict' s you…   Thanks & Regards, Lakshman Kumar B, +91 9440031459.   From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of belendine@gmail.com Sent: Monday, January 23, 2017 3:38 AM To: Materials & Welding <materials-welding@googlegroups.com> Subject: [MW:25974] Re: 12688] Cross country pipeline hydro test   Dear Mr Kumar,   Would you please elaborate why 50 km is stipulated as the restriction according B31.8? Or did I get...