metal perforated machine
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Perforated metal sheet punching machine
Material requirement: 1 Galvalume, ASTM A 792, structural grade A37,AZM-150 coating, AFP,Regular spangle, coil weight: max 5 mt, coil ID 508 mm 2 Prepainted galvalume with protection film base matal, galnized, ASTM653 6 60 structural grade A37. Paint: top 5+20 microns RMP/Back 5 microns E...