What are the requirements for the installation process of metal trunking?
1. Metal trunking is divided into galvanized and non galvanized products, and its specification and model shall meet the requirements of design specifications. The inside and outside of the trunking shall be smooth and flat without burrs, distortion, edge warping and other deformation phenomena. There are product quality certification and test reports.
2. For galvanized products, supporting galvanized accessories shall be used. The surface of the galvanized layer shall be smooth, uniform, dense, free of peeling, bubbles, local non plating, local corrosion, scratches and other defects, and there shall be no zinc nodules that affect the installation. 3. For non galvanized products, the paint layer shall be firm and free from corrosion, and grounding screws shall be welded on each section. 4. Cold rolled steel sheet is recommended. 5. The structure of supports and hangers shall meet the requirements of rigidity, strength and stability. 6. The mechanical property of the weld shall not be lower than that of the body material. The weld surface shall be uniform and free of defects such as missing weld, cracks, slag inclusion and burn through. The trunking and metal pipe shall be installed at the same elevation, and the trunking shall be laid above the pipe to bypass ① The corners of trunking shall be smooth. ② Hangers at corners shall meet requirements. ③ The distance between the pipe and the pipe is correct. Metal trunking hanger installation ① The spacing is even and reasonable. ② The suspender shall be straight without internal (external) splay. ③ Galvanized or treated with anti-corrosion treatment. ④ The length of suspenders is consistent. Metal trunking hanger installation ① The spacing is even and reasonable. ② The suspender shall be straight without internal (external) splay. ③ Galvanized or treated with anti-corrosion treatment. ④ The length of suspenders is consistent. Metal trunking vertical lower elbow and tee ① Tees shall be shaped products without right angle bends. ② The vertical lower elbow adopts the products finalized by the manufacturer. Metal trunking connection ① The butt joints shall be flush, and the trunking shall be free of staggered joints. ② The manufacturer shall provide connecting plates, bolts and other accessories to ensure good grounding.
