Punching: As the name suggests refers to the shape of the surface hole with all kinds of metal plates. Or punching punching plate is made of stretch material from steel punching various materials: stainless steel, aluminum, carbon steel, aluminum-magnesium alloy plate, copper, nickel plate. Weaving and characteristics: stamping, extending from; divided into: metal mesh, expanded metal mesh, aluminum mesh, sieve, perforated plates, speaker net Usage: widely used in chemical machinery, pharmaceutical equipment, food and beverage machinery, cigarette machinery, harvesters, dry cleaning machines, ironing table, silencing equipment, refrigeration equipment (central air) speakers, crafts, paper, hydraulic fittings, filtration equipment and other industries Pass: rectangular hole, square hole, diamond hole, hole, hexagonal hole, cross hole, triangle hole, a long hole, a long waist hole, plum blossom hole, scale hole, hole patterns, five-pointed star-shaped hole, irregular holes, from the dark hole and so on. Features: net surface is smooth, high-temperature corrosion-resistant, durable, has a wide range of uses. Specifications: Tablet thickness 0.3mm-15mm, pore volume 0.8mm- 100mm thickness 0.2mm- 1.5mm, length 1m-20m, aperture 0.8mm- 10mm. Features: 1, multi-layer sand filtration kits sand with efficient performance, better able to block the formation sand to meet the underground sand. 2, the filter pore uniformity, high permeability and blockades performance. 3, the filter area, small flow resistance, the oil is high 4, stainless steel, excellent corrosion resistance, acid, alkali, salt corrosion, can be adapted to the special requirements of the wells, crevice corrosion and will not become bigger. 5, the multi-layer structure welded one, can filter hole stability, resistance to deformation ability. Outer protective sleeve can also spiral welded