yes, the typical "DOM" is in fact welded, its actually a friction pressure lap weld, there is no type of filler used, the tube is drawn over a spinning mandrel by two other spinning mandrels, the extreme pressure and friction from the spinning roller welds the pipe. true seamless is done by...
ok, im no prfessional in anything.I am in my first semsester of machine tool... so im sorry for being uneducated.. i bought a $100 hydraulic tube bender, i thought it would be relatively simple to bend some tubing to make a different bumper/brush guard for my truck, so the structral strength...