Does anyone know of domestic usa suppliers of pipe and butt weld fittings that have the HF designation stamped on it?
I hate to have to buy sa-106-b pipe with the proper chemicals, normalize it, rerun physicals in normalized condition.
then do the same and have it formed for elbows.
Please excuse my ignorance, since I am unschooled in this material.
My customer has allowed the use of SA-240-unss32760 in lieu of SA-240-unss32750 for shell material. BUT, I am not finding an allowable stress in tables.
Is there a code case that covers this material.
I saw an older question...
I have a need for some large diameter super duplex head that will have to be manufactured in two (2)welded together prior to forming. Our suppliers here can not get the plates to quenching fast enough after annealing so the welds will be crack sensitive. Where do you guys buy these large...
A un-verified account of failure during hydrotest of vessel in China. Folks, please be aware of material and workmanship problems in China and other countries as well.
Again, this is un-verified, but from a pretty reliable source.
We have been in the process of expanding our business and plant capacity moving towards heavier carbon steel and chrome-moly vessels with clad or weld overlaid internal surfaces. Being an old skeptic by nature, I am interested in opinions/experiences with 50mm stip overlay process, primarily...
