hello all, i just wanted to see what the proper gap spacing is for butt weldin 2 pieces of piping together.

i have tried various spacing, and a buddy of mine told me 1/16th of an inch spacing

 

I usually stick a piece of .035 wire in between the parts in a couple of places. Works for me.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by k24em2 &raquo;</TD></TR><TR><TD CLASS="quote">I usually stick a piece of .035 wire in between the parts in a couple of places. Works for me.</TD></TR></TABLE>


wow, never thought of that, thanks very much for the tip

its great to have experienced guys like you in this forum, you all are very helpful

 

it really depends on the wall thickness of the pipe you are welding together.

just bend the wire in a "v" shape and stick it in there, tack a couple spots, pull it out and away you go.

make sure you back purge if you leave a gap and are welding stainless.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by weiRtech &raquo;</TD></TR><TR><TD CLASS="quote">it really depends on the wall thickness of the pipe you are welding together.

just bend the wire in a "v" shape and stick it in there, tack a couple spots, pull it out and away you go.

make sure you back purge if you leave a gap and are welding stainless.</TD></TR></TABLE>


much appreciated

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by weiRtech &raquo;</TD></TR><TR><TD CLASS="quote">it really depends on the wall thickness of the pipe you are welding together.

just bend the wire in a "v" shape and stick it in there, tack a couple spots, pull it out and away you go.

make sure you back purge if you leave a gap and are welding stainless.</TD></TR></TABLE>

Thats exactly what I do.

 

i usually chamfer/v groove my butt-welds so i dont have to have a gap.
is it nesesary?

 

no matter what it is on a butt gap the space needs to have half the material thickness