WB-4B Automatic Mattress Tape Edge Machine Technical Specification Model WB-4B Productivity 10-18 pcs/hour Rated power 3KW Sewing head Singer 300U Sewing thickness range of mattress 50-450mm Table Lifting range 125-450mm Air pressure 0.6-1.0Mpa Power Supply 3 phase 380V 50/60HZ Machine weight 1550KG