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Hi, We are a mounting a MC 331 LPG tank on to a truck frame and do all the related plumbing. We have a 312 SS flex hose that needs to be welded to a B16.5 steel socket flange. 1. I would like to know what filler material needs to be used. 2. Does the welder need to be qualified for this...

Thank you, jte !!

Thanks to everybody for the reply. The pipe we have is a 6" SA-53 Grade B Type E pipe.

Hi, I understand that the pipe wall thickness at maximum mill under tolerance is considered at 12.5%. Where can I find this information in the ASME code book ? UG-16(d) says "The manufacturing undertolerances are given in the several pipe and tube specs listed in the applicable tables in...

What is the best way to choose a process & filler metal for welding SA105 to SA612 ?

jwhit, Thank you for your response. 40 years in the field !! Thats amazing.... While looking up temperatures,should I look up base metal or filler metal's preheating and PWHT temperatures ? My questions are regarding a repair to be done to a MC331 pressure vessel. Thanks.

How to determine the preheating and post weld heat treatment necessary for E8018 C1 ? The base metals being SA612(head) and SA105(coupling).... Also, how to determine what kind of Non destructive examination is needed ? Pls. bear with the amateur questions. Thanks.

Thank you ! I found the A.Number. Its 10.

Thank you jwhit. I am gaining better understanding of the procedures now.

Sorry, meant SFA-5.5.

Hi, How to find the A.No for E8018 C1 H4R ? I am looking in SFA-5.4 but dont seem to find it. Thanks.

Hi, Thank you for the inputs. I am reading all the welding variables and trying to fill out the WPS & WPQ. About QW400, why is it that all the variables have a definition starting with 'change in' or 'increase/decrease', 'deletion/addition' ? Also, can one WPQ qualify more than one WPS ?

Hi, We recently did a Repair on a MC331 propane tank. It was to fix a pinhole in the weld that joins the coupling on to a tank head. With all the paper work involved, I understand that we should also include a Welding Procedure Specification & Welding Procedure Qualification Record. My...

Hi, Thanks for the reply. It is for Specification DOT 400 Series cargo tanks. A1011 has been listed as authorized for construction of DOT 400 Series cargo tanks.

Hi, I am trying to find the max. allowable stress value & Tensile Strength Su, for A1011 Gr 50 material for performing stress calculations. I tried finding it in Section II Part D book, but with no success. Appreciate any help. Thanks