You are welcomed to wholesale or buy customized slotted liner in stock and get slotted liner free sample from us,Website:http://www.wellscreenchina.com, which is one of the best slotted liner manufacturers and suppliers.The slotted liner is mainly used to the water and oil reservation layer without much sand. It's function is prevent rock bits dropping into the well bore. The working principle is allowing the certain size and coming through the surface with crude oil but keeping the bigger size sand being stopped outside to form sand bridge, and thereby achievement the anti-sand purpose.The slotted liner uses advanced laser cutting technology, which provides high precision of slot profile, specifications and location. �This type of product is commonly used to sand rock and carbonate reservoir, and especially useful for horizontal wells.Slotting pattern : line slot pattern, staggered slot pattern, multiple staggered slot pattern.