Specification: The thickness of table top is 75mm Natural frequency is <5-8Hz Table top : thickness: 4-6mm,1Cr13 Ferromagnetic stainless steel Bottom of table : 4-6mm,Carbon Steel;Surface spray treatment of melanin Flatness :0.02-0.05mm/600mmx600mm, The length of table top&legs is 750mm; The height range is -20-----+20mm Pitch: 25x25mm,M6 screw; Weight of table top is 125Kg/m2