Yes, but, it isn't particularly easy. You should practice on flat stock first.
Most common and main limitation of MIG welding is that MIG welder could not weld thicker metal. If you want to know details then visit this site.
can weld aluminium with a mig or tig welder
yes
yes
Mig (GMAW) has almost replaced Stick (SMAW) in industry. Small machines can weld thin materials and larger machines weld metals of unlimited thickness. Mig is easy to use and has less waste (no stubs) than stick. Flux core wire produces a slag covering but bare wire w/gas leaves a clean weld.
0.40-0.45 Rs/inch
I would use a wire feed MIG, or a oxy-fuel torch. If arc welding, use a low power. It's really easy to burn through exhaust pipes and mufflers.
place the metal clamp on a form of metal turn the mig welder on turn the gas on know were your welding flip your shield down and then give er
6010 is a high cellulose sodium based electrode, which can be used to weld carbon steel pipes.
circumfrencial weld is sometimes referred to as Girth weld. its just another term.
mig, oxy-acetelene, arc,
Metal expands as it is heated and contracts as it cools. Keeping the heat input even, completely around the pipe, will help. If possible reheating the weld area after the weld is complete can help to "stress relieve" the joint. Using a weld "fixture" to prevent bending is another possibility.