Really, not all asbestos is dangerous. I buy asbestos for several applications for my foundry for metals, and also the soldering pads that I use at my bench are asbestos. I believe it is a frayed fiber loose asbestos that is illegal now, going on a conversation I had with a distributor years ago. But yeh, why risk it in a pipe, especially when they can just use graphite to more easily make pipes, ha ha. The worst burn I have ever gotten was when I tried a new soldering pad product made of graphite. It actually caught my workbench on fire, and when I tried to push it off the bench, it was hotter than the piece I was soldering. I believe that was when I had the conversation with the distributor about the wonderfulness of asbestos, ha ha.