Hot working: low carbon steel is generally in the range of 1000 to 1100 DEG C, the temperature of the hot work should not be less than 700. Heating temperature in 500 ~ 550 DEG C. Steel brittleness, non hammering and bending, otherwise easy to make steel fracture. Cold processing: steel processing at room temperature, most of the use of mechanical equipment and special tools.
The common tools in the construction of steel structure measurement includes: theodolite, level gauge, vernier caliper, ruler, level ruler, angle instrument etc..
Structure Assembly 1.Steel Framework: Component: H-Column, H-Beam & C/Z-Purlin Connection of steel structure method: Welding, Bolted 2.Surface treatment: Painting, Galvanized 3.Roof &Wall: colored steel tiles or colored steel sandwich panel as per request 4.Doors: Rolling or Pushing, as request
operating conditions 1. Complete the construction details, and signed by the original design staff. 2. Construction organization design, construction plans, work instructions and other technical preparations are ready. 3. A variety of process evaluation and process performance testing and material procurement plan has been completed. 4.Main materials have entered the factory. 5.All kinds of mechanical equipment commissioning acceptance. 6.All production workers have been pre construction training, obtain the corresponding qualification certificate.
Purlin and wall beam installation: The light portal frame structure and wall beam purlin, generally use crimping tank type steel, Z type of cold-formed steel or high frequency welding light H steel. Purlin and wall beam usually welded to the connection on steel frame sloped beam and angle support beam.
Door and window installation. (1) doors and windows are generally installed on the steel wall beam. When installed, should install the four corners of the edge pieces of doors and windows, and the flashing side pressure in the windows and doors outside edge; then the installation of doors and windows. The doors and windows of dimensions and the size of the hole is closely matched, the general should be controlled in size than the small size of windows 5mm. (2) after the doors and windows are in place and temporarily fixed, the verticality of the doors and windows and the level should be checked, and then fixed. (3) note that the two line of all parts of the installation part, such as the roof, cornice line line, window top line etc.. Before installation, check the fitting of the fitting, select the appropriate connection of the joint.