Rose Box JIS F7206

The material of the filter box is carbon steel, the ratio of the total area of the filter hole to the nominal diameter area of the suction pipe is greater than 3, and the ratio of the area of the filter hole to the area of the orifice plate is greater than 0.3 The filter box shall be hot-dip galvanized after processing and forming, and the surface adhesion shall not be less than 600g / m2