Fused pipe for a variety of applications but mostly for water and sewer. The company I worked for has a propriety blend of PVC that is fusible. The market leader was and still is fusible high density polyethylene (HDPE) pipe. The HDPE guys hated us at the time as we were disrupting their industry and they would go out their way to smear us any way they could.What field?
They tried to sue us for some thing or another and we got all of their emails as part of the discovery process and found some damning, for them, emails regarding collusion and other dirty tricks they had done and were planning to do. It blew up in their face and a couple of real pieces of work lost their jobs. Good times....