<p>bolt in time to replace the damaged parts. Positioning pin, wind support, to spring and other vulnerable parts of the windows and doors. To always check, regularly add lubricants stick clean, sensitive. Steel door installation 1. Measure the thickness of the wall of the room, the width and height of the door, and measure the length of the box and the length of the box frame length, check whether the appropriate with the door. 2. In the assembly of the door frame must </p>
<p>be in a clean, flat ground, with 6 60MM long screws to the horizontal frame and two mullion connection firmly. 3. Three frame door in the same plane, the top box and the border connected to a 90 degree angle, fixed on both sides of the border 4 to 6 pieces of connecting pieces, nail on the lock foot wood and lock the wood, the top frame cover On both sides of the above, the width of the two sides of the door frame door width should be larger than the width of </p>
<p>the door 7MM, the top frame between the door and the ground within the height should be higher than the door height 13MM. 4. The assembled frame has been turned over the ground to fix the 4 to 6 pieces with the nail, check whether the inner corner is set, and the width of the inside and the next three points on the door frame is the same. 5. Put the assembled door frame as a whole into the doorway, check whether it is vertical, to connect the nail hole for </p>
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