3 function(3 cranks) manual hospital bed

3 function(3 cranks) manual hospitalbed Contour size:2120*1000*450-700the height of surface The raise angle of back:0-≥75° The raise angle of leg:0-≥45° The height of whole lifting:250mm Functions: 1.ABS fast-dismantled bedstead. 2.Installed side turnover banister on both sides of bed. 3.Centre control castors(Ø150), which are brake at the same time. 4.Molded and punched surface strip, having good ventilation 5.The lifting of back, leg and the whole body are controlled by manual leading screw has automatically shed system,connected with full metal. 6.The every parts of bed surface are connected with arc soft join, can be curved and stretched with the body curve, and lease the pressure towards chest and abdomen. 7.The main material of the body is carbon steel,with painted plastic.