It consists of two screens(shuangcenglong screem) or multilayer screen and the stuffing between the screens.it have great sand controling capacity,and so far it is a advanced sand controling techno…
Johnson screens consist of V-shape profile wire and the longitudinal support rods. each intersecting point of these wires is fusion welded.so it has sturdy constriction and good mechanical property.th…
The sand and gravel can not easily block the slot because of the special bridge design.,it has great mechanical strength and water entering capacity.meanwhile,it use steel punching technology and roll…
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