Fupower Custom Auto Parts Manufacturer - Best Racing parts manufactuer in China
They are two different things, and buyers often quote one when they mean the other. Ply count describes how many layers of reinforcement fabric are wrapped into the hose wall; Fupower builds 3-ply, 4-ply and 5-ply hose. Wall thickness describes the finished wall itself.
A 5-ply hose is not automatically thicker than a 4-ply hose from another supplier, because ply count says nothing about the weight of the fabric or the thickness of the silicone layers between the plies. For a boost application the useful question is the combination: how many plies, in what base fabric, at what finished wall thickness. Fupower will confirm which combination it recommends for your pressure and temperature conditions rather than quoting a ply number on its own.