Does anybody know where I can get the correct steel tube for building a roll cage for my class 2? Everybody I have spoke to so far has said Parker Steel but I have just got off the phone to them and they insist they do not do any seamless steel tube whatsoever?
Also does it have to be made of cds tube if its a "nasa permitted non-propriety manufacted roll cage" (which I assume means one I made myself?)
or can I use what parker steel call "cold formed circular hollow section"?
The majority of local rollcage constructors use The Circular Hollow Section tube supplied by Parker Steel. It's of the correct size and wall thickness to comply with the NASA rulebook. It also bends easily in a pipe bender and former.
The minimum approved size is 32mm diameter with a wall thickness of 2.5mm. I think Parker's size is slightly over this at 33.7mm dia. and 2.5mm wall thickness.