Help please!

admin

Hi, I need to weld 5/8 and 3/4 i.d. stainless tube inlets to 2"and 3" stainless tubing but first I want to drill the hole then flare it outwards, belt sand it then purge/buttweld the inlet to the pipeline. I've done this before (18 yrs ago) and was wondering if anyone knows where to get the proper flaring tool. Hopefully some of you dairy equipment welders will know. What i can remember is a cone which was threaded in the bottom half and a bolt to go down through the cone, but i can't remember what made the cone flare the hole.  Thanks, Rev
Reply:there is a tool  called a T drill which mechanical contractors use to fabricate headers with lots of outlets -it drills a hole into a pipe and as it pulls out small arms project out and pull a flare along with it-the pipe is silversoldered in and no t fitting us used.
Reply:Originally Posted by weldbeadthere is a tool  called a T drill which mechanical contractors use to fabricate headers with lots of outlets -it drills a hole into a pipe and as it pulls out small arms project out and pull a flare along with it-the pipe is silversoldered in and no t fitting us used.
Reply:Originally Posted by revrider1Hi, I need to weld 5/8 and 3/4 i.d. stainless tube inlets to 2"and 3" stainless tubing but first I want to drill the hole then flare it outwards, belt sand it then purge/buttweld the inlet to the pipeline. I've done this before (18 yrs ago) and was wondering if anyone knows where to get the proper flaring tool. Hopefully some of you dairy equipment welders will know. What i can remember is a cone which was threaded in the bottom half and a bolt to go down through the cone, but i can't remember what made the cone flare the hole.  Thanks, Rev
Reply:Originally Posted by duaneb55Don't forget - the pre-flare hole is not round but oblong along the CL of the pipe so that the material required on the sides of the flare is available as the tool pulls the takeoff.duaneb55
Reply:Originally Posted by revrider1after i flare the hole i will belt sander to square up the hole for the inlet to be butt welded, purge welded, then i will polish the weld. These will be for inlets on a milk line in a dairy milking parlor. Hope this makes sense. Thanks
Reply:Originally Posted by revrider1Hi, I need to weld 5/8 and 3/4 i.d. stainless tube inlets to 2"and 3" stainless tubing but first I want to drill the hole then flare it outwards, belt sand it then purge/buttweld the inlet to the pipeline. I've done this before (18 yrs ago) and was wondering if anyone knows where to get the proper flaring tool. Hopefully some of you dairy equipment welders will know. What i can remember is a cone which was threaded in the bottom half and a bolt to go down through the cone, but i can't remember what made the cone flare the hole.  Thanks, Rev
Reply:The t-drill to use on ss is $11,000.00. I dont know if this job is worth taking.
Reply:Hi There,Thought i would offer my two cents.... might of done the job by now though....Pulling tube we call it anyway, for such a small OD i would worry about center lines nothing a sander cant fix. the hole you drill needs to be alot smaller than the tube you want to pull it to because this will allow for the material to pull away from 3". Find/turn up a piece of pipe that will match your OD of small tube or slightly over. Turn up a small taper with a thread cut down it's centre the with a OD of slightly less than the ID of your tube. Drill hole in 3" place taper inside tube with your turned up bush/pipe on outside and a suitable washer etc and pull the two together. Does that make sense? thats how i would do it anyway, beats spending $11k
Reply:t drill was expensive years ago and i see it has gotten worse..