Polyethlene is the standared tubing used then to make hoops?
Wow, this is old information, before I did a study on all this. No, there is not a "standard" tubing for hoops. Because most home hoop makers were using PSI (pounds per square inch) as the measurement of value between the various tubes, most of them never knew if they were using PVC, PPE, LDPE PEX, or whatever.
All the polyethylenes, polypropylenes and pvcs have the same weight per similar volume. HDPE is the stiffest of the polyethylenes and the most heat resistant. PEX and PVC have wildly different colors, densities, PSI, etc. PPE is the new star in the hoop world because it's stiffer at smaller sizes. So you can get a thin walled, small diameter hoop that feels as stiff and springy as a much heavier one. the result is faster tricks. The down sides are reports of shattering, and lower heat resistance.
wow this was great info thanks!