1, multi-layer sand-proof filter set with high-efficiency sand-control performance, can better block the formation of sand particles, to meet the needs of underground sand control.

2, the filter hole uniformity, permeability and anti-plugging performance is high.

3, large filter area, small flow resistance, high oil yield

4, stainless steel material excellent corrosion resistance, anti-acid, alkali, salt corrosion, can adapt to the special requirements of the Well, the gap will not be increased by corrosion and gradually become larger.

5, multi-layer structure welding, can make the filter stable, anti-deformation ability is very strong.

The outer protective sleeve can also be spiral welded.