... .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 can ... accurate slot dimension. At the same time, water well screen have heat-resisting, anti-corrosive, good machine capability, last long, ...