... (302,304,304L,316,316L etc). Filter Screen Pipe Water well screen /wedge wire screen/screen pipe/wire wrapped screen pipeMaterials: carbon steel and stainless steel ... area are more suitable for the construction of high-quality water wells, oil wells and gas wells. 2. Low ... filtration apparatus, which will avoid sand’s entering into screen because of high pressure, thus reduce the abrasion of the pump. ...