Manual paragraph Retractable stairs: ??? 1, high-profile luxury models: ????? This paragraph stairs overall use of high strength cold-rolled steel stamping. ????? Stepping width 10CM, length 40CM. GB stepping thickness 1.0MM. ????? S bend thickness GB 2.0MM. Anquan Cheng weight of 260 kg. ??? 2, to strengthen the high-profile new models :() of this paragraph stairs ????? overall use of high strength cold-rolled steel stamping. ????? Stepping width 13CM, length 40,45,50MM (based on the hole width) ????? stepping thickness GB 1.5MM. S bend thickness GB 2.0MM. Anquan Cheng ????? weight of 300 kg. Is the high cost of styles. ??? 3, paragraph :( new titanium alloy) ????? S curved staircase in this paragraph is rounded shape of the surface smooth and delicate, S ???? ????? bend is made of high strength titanium alloy production , stepping surface is flat pattern ribbed shape, ??? ????? net electrical quality titanium magnesium alloy die-casting, stepping long 380mm wide and 110mm? ????? every high level within 210-250mm, surface use spray. ????? ????? Safe load 300 kg or more. Description 1 Retractable stairs sticks, stairs made of high strength cold-rolled carbon steel. ? 2, steel frame, powder coated, high-temperature baking surface treatment 3, the metal pieces by Ryoka, electrostatic spray, high temperature baking surface treatment, timeless. 4, beautiful and practical, easy to operate, easy to install. It is an alternative fixed stairs, saving the best choice for interior space. First, retractable attic stair use ??? mainly used for small attic space, shops and so on, up and down the main channel connection. Second, the attic stairs telescopic type, now I introduced the attic stairs stairs manual type, electric type two colors black and white points, all white, orange white, blue and white combination of four. Wherein the manual section, sub-normal models and luxury models, the upgrade section, the manual models only downstairs operating, electric type using domestic motor, wireless remote control, automatic folding and Shoulong. Upstairs Downstairs electric models can operate with the remote control. Three-story attic stairs and space to do what is required: 1. highest floors do 3200mm. 2. When you open staircase basic size requirements: 1200mm - 1800mm, floor span size of about 1300mm - 1500mm automatic telescopic stairs technical parameters 1, the automatic retractable staircase type of operation are: Remote + switch + manual; 2, automatic type Retractable stairs to increase the use of electric putter and two hydraulic lever to control the door so easily and automatically opening and closing the door; at the same time putting electric motors on the self-locking function, does not make the door fell; but also manual functions, After the power is to be manually; 3, there are two limit switches, achieve limit position, the motor will not burn; limit switch lever length and angle can be adjusted; 4, using high-quality carbon steel staircase Q235B, a thickness of 1.5mm steel stamping; stamping striped top and bumps, so that you can slip; it can improve the strength of stepping, can withstand 680 pounds of maximum weight 5, using high-quality carbon steel stairs S bend Q235B,. thickness of 2mm steel plate a stamping, punching above reinforcing ribs. 6, mouth floor frame made of high quality carbon steel Q235B plate; plate thickness is 1.5mm steel plate, punched and welded. 7, stairs two S bend the hinges, solid 304 stainless steel rivets, riveting machines imported from Germany, riveting, riveting, high quality, good concentricity, walking more stable, completely overcome the poor stability of similar products and shaking ills. 8, stairs screws and bolts made of stainless steel 304. 9, the four corners of the fixed platen plate with thick reinforced three plate 10, door finest pine production, up and down the stick pressure 9mm thick white paint board, total thick 36mm;. Insulation, good special effects. 11. The end of the foot of the stairs industrial polyurethane material, has good elasticity, will not scratch the surface. 12, the lower part of the staircase is equipped with plastic rollers, steel stairs and doors to avoid collisions. 13, all steel with hydrochloric acid pickling rust, electrostatic spray, high-temperature baking surface treatment, timeless. 14, stretching back stairs, motors are self-locking function to prevent door sagging own. 15, stair height can be adjusted to some extent still, in order to accommodate the high floors; 3.5m or less of the stairs in the floor height. 16, all components of the staircase with a standardized, modular design, any parts are common. 17, this space-saving staircase, beautiful and practical, easy to operate, easy to install, safe and reliable. 18, this is widely used in attic stairs, villas, shops. Retractable attic staircase entrance requirements for the installation of an attic hole size requirements ?? (rather large not small) ??????? hole sizes:? 1200 * 1000 * 700 ?? 700 ?? 900 * 700. When leaving the hole, please try to master construction by size remain. 1 ,? error is inevitable, the hole than that specified in the contract at this time can be slightly larger than 5mm. That is rather large not small. ?????? 2, note: the hole shall be equal to the diagonal corners. Which is to ensure the four corners of the 90 degree angle. Second,? Attic wall hole distance of not less than 5 cm. 1 ,? door because the stairs have cuffs, similar to the room door pockets, there must be a distance of not less than 50mm between the hole and the wall. ???? 2 ,? if there is plaster corner, away from the edge of the hole edge line of plaster shall be not less than the distance of 50mm. ???? Under 3 ,? along around the hole do not have any decorations, such as plaster and other, keeping the hole bottom surface and the ceiling in a horizontal plane. Third,? Different materials ?? attic hole (the hole is surrounded by flat, ensure drilling screws have focus) 1, if the hole with a square steel making best are surrounded by flat, drilling screws have focus. 2 ,? If the hole using the channel? (? U-shaped or C-shaped steel steel?)? Production, the plane should be outward channel that surrounded the hole is flat. ???? If the opening outward, that C word of mouth outwards, need re-welded steel in the mouth, in order to ensure drilling wire has focus. 3. If you use the "I" word steel (or H-shaped steel) production, need to re-welded steel in the mouth, to ensure that the hole is surrounded by a flat, drilling wire has focus. 4, square steel (or channel or "work" word steel) along the horizontal distance from the ceiling within 8cm of. ??? That 8cm up at the underside of the ceiling can play screw, do not be empty. Note: After welding is completed the hole, the inside of the hole four sides is best not to pack Blockboard or gypsum board, the steel directly exposed. Fourth, the slab thickness (the distance between the ceiling underside of the attic floor) In a 13cm-25cm ???? stairs after stretching process and extended height depending on the floor, takes about 180cm.