It can be connected to a certain length on the ground and then hoisted as a whole. Generally, it can be connected to a length of about 10-12 meters. The fine steel pipe can be hoisted to the support (heavier fine steel pipe) with an inverted chain or a lift. The steel pipes are placed section by section on the support and connected section by section. When the fine steel pipe passes through a fireproof and explosion-proof wall or floor that needs to be closed, a pre-embedded pipe or protective casing should be installed. The thickness of the steel plate should not be less than 1.6mm. The application between the fine steel pipe and the protective casing is non-combustible and does not harm the human body The flexible material is blocked.
The joints of fine steel pipes should be strong and free of holes and cracks. After the equipment of the fine steel pipe system is finished, the tightness inspection should be carried out according to the system category. Before the square valve equipment, check whether the frame structure is strong and whether the equipment such as dispatching braking and positioning is accurate and flexible.
The equipment of the square valve is the same as that of the fine steel pipe. The flange of the square valve is aligned with the flange of the fine steel pipe or the equipment, the gasket is added, and the bolts are tightened to make the connection with the fine steel pipe or the equipment strong and tight. In the case of square valve equipment, the operating equipment of the valve should be convenient for manual operation, and the equipment direction should be the same as the direction marked on the valve body shell.
The square valve after the equipment should have a significant and accurate opening direction and degree of opening sign on the valve body shell. The fusible parts of the fire damper should be installed on the top side of the fine steel pipe, and the melting point temperature should meet the planning requirements.