... End: Welding-ring or threaded ends. Standard designs for installation depths of 100, 200, 350 and 600 ... meters. Other installation depth designs available upon request. Wedge wire water well ... . 5. Trapezoidal wire filter pipe is easy for washing, long service life, safe, reliable, comprehensive ... : 6Mts.&3Mts Grades: different grades suitable for tube well depths up to 300ft.,600ft.,900ft ...