sieve wire mesh 
Accurate mesh screen 
Screen frame exquisite and durable, with no leak tight 
Smooth surface, durable shape
 
The continuous slot wire-wrap water well screen is used throughout the world for water, oil screen, and gas wells, and for environmental well completions. It is the dominant wire mesh type be used in the water well industry plastic industry.food industry. this type of screen is constructed by winding cold rolled triangular V-shaped wire around a circular array of longitudinal rods. the wire is welded to the rods and produces a rigid unit that has high strength and minimum weight.  
The standard test sieve is always used in test particle size.
 
frame diameters are avaliable as Φ200mm and Φ300mm.
 
Aperture sizes are as per 38μm, 45μm, 53μm, 63μm, 75μm, 80μm, 90μm, 100μm, 106μm, 125μm, 150μm, 160μm, 180μm, 200μm, 212μm, 250μm, 300μm, 315μm, 355μm, 400μm, 425μm, 500μm, 600μm, 630μm, 710μm, 800μm, 850μm, 1.00mm, 1.18mm, 1.25mm, 1.40mm, 1.60mm, 1.70mm, 2.00mm, 2.36mm, 2.50mm, 2.80mm, 3.35mm, 4.00mm, 4.75mm
Perforated Plate Sieves (Square Hole) are manufactured from tinned steel plate and supplied with full-depth frames.
 http://www.erichardwarefilter.com