... 3.5mm length: 50mm---6000mm male and female threads Johnson water well screen Materials: carbon steel and stainless steel (302,304,304L,316 ... ,316L etc).characteristics :The welded stainless steel water well screen is made up of rods and warp. The rod ... structure and high open area, as well as accurate slot dimension. At the same time, water well screen have heat-resisting, anti-corrosive, ...