With the adjustment of the national macro policy, China's seamless steel pipe trade industry profits from January to May this year decreased by 56.9%, large and medium-sized seamless steel pipe enterprises in July net loss of 1.984 billion yuan, in August, the whole industry faced losses. Many problems existing in the traditional ......

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.