The support and hanger device is installed symmetrically according to the center line of the square galvanized tube, and the hanger rod is safely and reliably fixed, and the parts after welding should be painted. When erecting the pipe clamp device, the uppermost pipe clamp should be fixed first, from top to bottom. The square galvanized tube is longer. When installing a row of brackets, install the two ends first, and use the two brackets as the reference, and the center brackets are installed by pulling wires. 

hot rolled square galvanized tube from China manufacturer，Horizontal device The long side is ≤400mm, and the interval is ≤4m; the long side is >400, and the interval is ≤3m; the supports and hangers of the spiral square galvanized tube are 5m and 3.75m respectively. The length of the main square galvanized tube and the main square galvanized tube exceeds 20 meters, and a fixed point should be set to avoid swinging. Each system should not be less than one. When the square galvanized tube is installed in a straight line, the spacing between the supports and hangers is less than 4 meters, and a single tube has at least two fixed points. 
Supports and hangers shall not be installed at square openings, valves, inspection doors and automatic control organizations, and the distance from square openings should be greater than 200 mm. The corners of the hoop bracket should be straight, the arc of the round square galvanized tube should be even, and the hoop should be close to and tightly hug the square galvanized tube. 
The support and hanger of the insulated square galvanized tube should be placed outside the insulation layer. The insulated square galvanized tube should not be directly touched with the support and hanger. It should be padded with a solid insulation and anti-corrosion material whose insulation thickness is the same as that of the insulation layer to avoid "cold bridges".