floor spring

The size of the door frame is determined according to the size of the door opening according to the corresponding building requirements and door and window installation specifications; the size of the door leaf should be determined according to the net height and net width of the door frame, the specifications of the seal strip, and the specifications of the floor spring. According to experience, a 5×6 seal strip is used, and the leaf and frame are kept.

 

mm gap, and the leaf and leaf are kept at 6, mm gap is more appropriate, which is convenient for the installation of the door leaf and has a better sealing effect; the load-bearing parts such as the upper horizontal frame of the door, the upper horizontal frame of the leaf, the lower horizontal frame and the middle vertical frame should use lining steel of sufficient strength, and be pre-connected with the profile with self-tapping screws; the upper support point of the floor spring hinge should be assembled in the upper frame of the door before welding the door frame, and its center is about 100~120mm away from the inner corner of the door frame, and it is symmetrical on the left and right at the midline position of the frame, and the extension and contraction of the two support shafts should be flexible and firm; the size of the door leaf should be made according to the design requirements, and after the door frame is made, the installation position of the upper and lower handles should be determined according to the actual position of the preset upper support point, and pay attention to dispersing and eliminating the errors caused during the production process. You can follow the above method to operate! If you don’t know how, you can ask a professional master for better results!