Im looking to see if anybody has experience fabricating piping supports from A992 Ibeams/Tees. I say Ibeams or tees because i cant gather if fabricators take i beams and cut the flange off one end or order a tee that only has a flange on one end. I have a current bid to do where the drawing...
Hello all,
I had a quick question on SA-312 304L impact test requirements per b31.3. on EFW pipe since there is not filler material deposited to weld the joint does the pipe have to come impact tested at -320 per table 323.2.2 A-4(b)? The hardest part for me is getting over where it says "weld...
All,
I recently had a job come up that is SA-790 Duplex Stainless steel. In the past years we qualified a procedure where the customer required impact testing where the minimum thickness qualified was 5/8". The current job i have has thicknesses ranging from .280" to .375". with the...
All,
Ive recently been tasked to develop a system to track and record RT failures in our pressure vessel welding shop. Currently our quality team believes since we are not recording this therefore it is leading us to believe we are being too lienient on x-ray failure percentages on a per welder...
All,
I am having issues deciding on how to destructively test some procedure qualifications that i am trying to do. The tests consist of a P1 Group 1 to P1 Group 2 .375" thickness and another plate test of the same materials thats .750" thickness. Im having trouble deciding if ill need to lower...
All,
I have a customer that wants all their stainless steel pressure vessels to be below 2.0 mew magnetic permeability. Problem is that they were fabricated without production knowing of this requirement and consequently they are all failing. I do know of the proper steps to prevent this from...
All,
Currently in our shop we are heating 1/2" diameter 0.065" wall tubing filled with a magnesium oxide to 1600 Deg. F then rapid water quench to prevent cracking during bending. The inner radius of the material when bent is a 3/4" inner radius. We are currently having issues with cracking...
All,
I am currently trying to qualify a small diameter procedure qualification on SS Tube 0.500" diameter .035" wall. I am confused on the destructive testing needed to fully qualify to section IX. In QW-451.1 it says anything less than 1/16 thickness needs two tension specimens, two face and...
I am trying to figure out if there is a limit on repairs of a weld joint before the HAZ needs to be cut out. Currently we repair a part for a customer about once a year and we continually have done this on that part about 8 times. Neither UG-78 or UW-38 cover anything on this so im stuck and...
