We have mini orbitals but we also have some in-house units we call "cubes", essentially a small lathe with a horizontally mounted torch and custom fixturing to hold the 40 foot plus tube. I have been told the cube set-up is more desirable as it is easier to get good concentricity between the...
A socket has been considered in the past on similar applications. One problem we've run into is that the lip of the socket does not always get pulled into the melt and once the you miss it during the weld process it's really hard to get it on a rehit. One thing to keep in mind here is the...
Unfortunately the pipe dims are set in stone, the pipe is 45+ feet long and there's no latitude to change at this point (couple thousand feet of tubing in-stock). Looks like we're just going to make some weld samples and thake them up to test pressure (4000psi) to prove it works. Thanks for...
Here is my attempt at posting a pic.
The pic show a welded and unwelded fitting. Note that the welded sample has the tube hacked off very close to the weld, the actual part would have more than 40' of tube extending off the end, kinda hard to work with on my desk. The wall thickness of the...
Thank you gr2 and LSThill
FYI, we have been doing these welds for the past 20 years with GTAW, and yes, we get a bit of ID sag. The welds typically have a HAZ about .050 to .075 wide and we have no problems getting a full pen weld that's extremely clean. The probelm I am facing is that we...
My apologies for the somewhat vague description but I was having a rough time trying to give a concise description of my delima.
I've got a situation wherein I need to join a 316L tube to a machined 304L fitting. The fitting has a lower yield strength than the tube (the tube is slightly work...
Hey guys,
Thanks for the speedy input. Ted, I particularly like the idea of looking at it from a strain perspective. As far as the 116" bend redius, yes, that seems quite large and in-field practical experience would indicate we can get away with a radius much smaller than that. Could it be...
I've got a situation where I need to determine the minimum bend radius a tube can take prior to material yield and I am having a heck of a time getting reasonable results. Something tells me this should be a relatively simple exercise but I am not getting any results that make sense.
My...
We do not have ASME nuclear stamps. For those who have responded, the company I work for is located in Ontario and most of our products are supplied to US reactor sites through an American distributor. I'm trying to find out if we are required under Ontario Law/Regualtion to have a current copy...
I've recently been hired with a company that uses the B&PVC as a basis for their design reports. The latest version of the code we have is July 1995. Would those experienced with the code here highly recommend upgrading to the latest revision? We manufacture penetration sensors for nuclear...
