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Hello.. As per Canadian code, CISC Section 7 and Item No. 15, reaming of mismatch bolt hole be the part of the steel installer, but it doesnt say if the max mismatch of bolt hole allowed - is there a max allowable mismatch that can be reamed, is it specified in any spec.. Thanks for the...

Yes, we did clean the coupon to 120 grit and the results shows zero corrosion... Thanks very much for the apt advise.

Sheidling used was welding Argon and backing was 95%Ar+5%N Re Ed's query - the testing was done in 'as weld' condition, no machining or polishing been done, we suspect that could be one of the reason, but in 18.6 or so it says should meet the fabrication condition as well? They havent done a...

Hello Forum, One of my collegue explained an issue that he is having with Super duplex PQR develpoment, as we will also have this material, Weld Coupon is performed on a 10" NPS X 10S (0.165" wall) A790 S32750 Type 2507 EFW pipe welded with ER2594 GTAW root, Fill and Cap, in the 3GR (rotated...

Thank you so much for the quick advise!

Hi All, We have an issue re UTS of Super duplex Stainless steel 18"x8" weldolet - the UTS as per the MTR is 114741psi instead of 116000 as per listed in A182. Vendor advises they used 10" piece as starting material and UTS over 2" thick is only 10600 so it is acceptable - are we can agree with...

Hi Forum, Is there a Course conducted by anybody for Crane Rigging/Lifting Study in Canada or online? Thanks

Thank you both metengr & weldtek, But attaining 50ppm seems very difficult to acheive, comment?

Hi Forum, One of my colleuge is having some Supler Duplex 2507 SS pipe welding to be done for our project. Some of requirments that is proposing is not been agreeing by all parties - 1.Qualify welders on Super Duplex material itself. 2.Oxygen content in backing gas shall be 2500ppm max...

Hi Forum, One of my colleuge is having some Supler Duplex 2507 SS pipe welding to be done for our project. Some of requirments that is proposing is not been agreeing by all parties - 1.Qualify welders on Super Duplex material itself. 2.Oxygen content in backing gas shall be 2500ppm max...

Thank You gr2vessels - it cleared my double thinking. Will leaving deseccant bag inside and tight closure of all nozzle openings will do good - as there are 100+ exchangers and still a construction phase, so leaving N2 blanket poses a safety concerns. Rahul

Hi All.. I read the shipping and long term preservation requirement of exchangers in this forum. But I have a query re the requirements during or after installation - ie when installed on the site, and when piping start installing do we need to maintain the N2 purge..or after all piping is done...

Hi Everybody, I read most of the Bolt torquing subject here, but I do have a query, does the Flange Material have any influence on the Toruqe valve - the Flange material in the question is Duplex..do the torque value will be same if use Bolt material of A193-B7, and Spiral wound gasket...

Hello. My question is, we are using end caps for hydrotesting for over a period of time. Not sure how many times these end caps were been used over the years. And supposing that those are not been tested over the allowable test pressure limit, how many times we can use these? Is there a...