This is bob from haixing wedge wire company in china.Our johnson well screens are manufactured with V-shaped profile wire which is spirally wound around a cage of longitudinal support rods. Each intersecting point of these wire is fusion welded. The pitch of winding gives different spacing between two adjacent turns of wire.This spacing gives passage for water to enter.The entire process is completed on fully computerized machines.Please tell us your demand and then we design ,manufacture for you.Yours faithfully bob.
 NB  1.5", 2", 3", 4", 6", 8", 10", 12", 14" 
 Slot     (mm)  0.15,0.25, 0.50, 0.75,1.00,1.50,2.00,3.00 
 Lengths  6 Mts. & 3 Mts. 
 Grades  Different grades suitable for tube well depths upto   300  ft., 600 ft., 900 ft. and 1500 ft. 
 Material  Low Carbon Galvanized Steel ( LCG ) and  Stainless Steel ( SS-304 ) 
 End Connection  Plain beveled ends for butt welding or threaded.