Review on Density Polyethylene Black Welding 125 by Matthew Watkins

Polyethylene and polypropylene are not the same. The copolymer is polypropylene with one molecule of ethylene. There are random and block copolymers. It's from China so I don't know if it's a language barrier or something. But this is a polypropylene stick, and it's not even of very good quality. I spend about 300 pounds 5/32 rods a year. I am a certified dvs welder at hshw on pe. That would be a great support material for tomatoes or something. I don't know if I'll weld anything with it. The sweat test showed that it was polypropylene. No polyethylene.