Installation Methods of Aluminum Alloy Tubes

　　Tube Condition: Ensure that the aluminum alloy tube is flat, without deformation. The inner cavity should be smooth, free of burrs, and the joints should be tight and straight. All necessary accessories must be in place.
　　Weld Joints: Weld joints should be leveled, with tight and vertical connections. The weld covers must be smooth, free of expansion or contraction angles. Proper placement of entrances and exits is crucial for ease of installation.
　　Handling Building Deformation Joints: If the aluminum alloy tube crosses over a building's deformation joint, the tube itself should be broken at this point. The tube should be connected to a connecting plate, ensuring it is not rigidly fixed. The protection zone must allow for compensation. For CT300100 pipes, one anchor bolt should be fixed at the transverse rib, while two anchor bolts should be used for CT400100 pipes.
　　Non-conductive Parts: Non-metallic pipes should be appropriately connected and spanned to ensure that all connections are secure and seamless.
　　Fire Prevention and Sealing: For aluminum alloy tubes laid in tube wells or used for different evacuation outlets, fire prevention and sealing measures should be implemented as per design specifications.
　　Length and Compensation Devices: If the aluminum alloy tube exceeds 30 meters in length and there is a deformation joint, a compensation device should be installed at the deformation joint during cable pipe construction.
　　Grounding and Support: Metal cable pipes and support frames must be connected to the grounding system (PE) or zero connection (PEN) main line at no fewer than two points.
　　Grounding Copper Core Wire: Copper core wire joints must be grounded at both ends of the non-hot-dip galvanized cable pipe connecting plate. The minimum allowable cross-section for the wire joints should not be less than BVR-4mm.
　　Connecting Plates for Hot-Dip Galvanized Pipes: The connecting plates between hot-dip galvanized cables and pipes should not be connected to the grounding wire. However, at least two anchor bolts with locknuts or sealing rings should be used at each end of the connecting plate to ensure a secure and stable connection.