what the difference in pipe and tube, sorry if its a stupid question, but i do need to be edumacated!!!
The only REAL
difference is the way it is measured, a 2" TUBE is measured 2" outside to outside....
A 2" PIPE is measured 2" from inside to inside edge.
Most people don't know much about how strong pipe really is for the fact the popularity of using just TUBE for jeeps and 4x4's because it's a little easier to measure for simpe fabrication for the hobbiest.
You can get DOM tubing AND pipe..
You can get welded seam tubing AND pipe..
You can get chromolly in both...
Any process of tubing made is also made in pipe.
In the past 30+ years i've been an ironworker i've welded..fabricated and put up PIPE being used for structural purposes on bridges..power plants..buildings..etc etc designed by some of the BEST engineers in the world..it just all depends on the availability and price of which they decide to use.
If you want to get technical,,a 2" PIPE is stronger than a 2" TUBE made of the same material and process..pipe has the larger diameter than the tube....
I made both my bumpers from schedule 40 2" PIPE...i've YANKED HARD on them pulling myself and other vehicles out of mud holes..SLAMMED into trees and river rocks with them...and recently rolled my jeep on it's side when i hit a tree so hard it flipped it from the front bumper hitting the tree..and to this day they have no kinks or bends in them,just several different coats of paint from the abuse..lol
You can get PIPE dies for the same benders used for tubing and vise versa
As far as a welder,that depends on how much use you plan on using and how soon you want to start fabbing and feel comfortable with your welds..stick takes ALOT more skill and TIME to learn ..a wire feed(MIG or FLUXCORE or both) is ALOT easier to learn for the beginner and hobbiest.
Another factor is what power supply is readily available to you..110v only?..or 220v too?
Other tools you need to consider and a MUST..is a grinder and cut off wheels and grinding rocks for it..a GOOD welding sheild..and an auto sheild is MUCH easier for anyone to use..especialy begginers.
Good power tools..drills,,sanders..etc etc.
There is plenty of build threads of different bumpers,rock gaurds ,etc here..different styles..different types of steel,tube,pipe..etc etc..just have to decide what route you want and then from there figure out the best material and size for you're application and budget
Don't DREAM your life, LIVE your dreams
Never forget 9/11
"Welding is like a woman,Get 'er HOT and Penetrate"
Gotta LOVE a person who knows everything about NOTHING
The only Thing necessary for the Evil to win is a good man to do nothing....
"How far you go in life depends on your being tender with the young,compassionate with the aged,sympathetic with the striving,and tolerant with the weak and strong--because someday YOU will have been all of these"....George Washington Carver
Want to know what an Ironworker is and the job scope of a Journeyman?..click here...http://www.ironworkers.org/becoming/careers.aspx