Here we show you is Automatic Expanded Metal Spiral Tube Making Machine, also known as Automatic expanded mesh core rolling machine for filters for filters. It's an excellent truck air filter making machine. The heavy duty air filter is made using a spiral curling forming method, resulting in an integrally formed inner and outer mesh without the need for welding. We are professional truck air filter making machine manufacturer and supplier in China,we also have truck air filter making machine factory.