The metal expansion section can have a very good effect of maintaining the pipeline. It has a large number of sealed gaskets on the sales market, and the manufacturer of metal winding gaskets has a detailed product series, which gives a different choice for many customers.
Because the natural environment of the paving pipe is different, the manufacturer of metal winding gaskets has a different look. The relative density of the metal winding gasket can be done according to the different card tension, and use the inside and outside steel ring to manipulate its larger card tension, the surface precision of the flange surface that is winding the gasket is not high.