[urq] Air Conditioning line soldering

[Ben Swann]

I am reconfiguring a Coupe GT AC to be like the Ur Quattro setup for the turbo conversion I've been working on.  The UrQ line terminates near the firewall so I need to shorten the line by about 1' so am going to spice the end of the line on where I cut it close to the firewall.

What kind of metal is this line?  It is .5" diameter and a 1/2" Copper sleeve (street fitting0 goes over it fine.  If it were copper line, I would just solder the two segments together and join with the sleeve(street fitting) using plumbers solder (lead/bismuth) and flux.  I'm wondering if this will work for the AC line as well, or is there some other kind of solder and/or fitting  and/or technique I should be using.

TIA

Ben