1.Long working life 2.Self-cleaning function 3 ... .1mm—15mm; metal rolled sheet thickness 0.2mm—1.5mm; maximum width 1,250mmHole pattern: Round hole, square hole, oblong ... distance: Metal sheet 0.1mm—200mm, metal coil 0.5mm—10mm, center distance specified by customer or recommended by ... coal mines, mineral processing, and hydraulic industry. Features:1.wear-proof and long service life, its service life ...