If a blowout took out a copper LP line, I'd consider replacing it with a black iron pipe in the area where it might be susceptible to damage again. You were lucky once, but sh*t happens.
Pigman & Piglady
2013 Tiffin Allegro Bus 43' QGP
2011 Chevy Silverado 1500
SMI Air Force One toad brake
Street Atlas USA Plus