Optical cable joint box is an indispensable connection device in communication optical cables. This product is suitable for connection protection of ADSS/OPGW optical cables. It has the functions of straight-through connection and branch connection. It can seal, protect and place optical fiber connectors and store reserved optical fibers, etc. The effect of protecting it from the influence of external environmental factors can produce six optical cables at the same time and install them on aerial poles and towers.1. The overall length is 500mm, the outer diameter is 200mm, and the inner diameter is 180mm. 2. Temperature performance: -40℃+60℃. 3. Dielectric strength: 15KV DC, no breakdown for 2 minutes. 4. Seismic performance: 10 grades 6 times. 5. Sealing performance: 100kpa, 72 hours, the pressure does not change. 6. The maximum outer diameter of the optical cable is 22mm, and the maximum number of connector cores is 144 cores. 7. The service life is 50 years. Product advantages: a. Wide application range: suitable for skeleton type, layer stranding type, bundle tube type armored and unarmored optical cables, flexible to use. b. Good sealing performance: the product is sealed with high-quality silicone rubber sealing ring. Then use sealing heat shrink tubing or self-adhesive tape to seal the cable hole. c. Strong weather resistance: Imported high-strength and high-quality aluminum alloy materials are used, and anti-aging agents are added, high and low temperature resistance, good anti-aging performance, and long service life. d. High mechanical strength: It has good resistance to vibration, tension, compression, impact, bending and torsion, and is durable. e. Reasonable structure: The optical fiber coiled tray adopts loose-leaf rotation type, which can be flipped arbitrarily according to the needs, convenient for construction and maintenance, no additional attenuation for optical fiber coiled, and the radius of curvature is ≥ 40mm. f. There is a grounding device. Product structure features: 1. The optical cable joint and excess length adopt the sheet-feeding storage fiber, and the joint protection form is reinforced by heat-shrinkable sleeve. 2. The joint box is sealed with steel belt and silicone, which is easy to operate and can be opened repeatedly, and it is convenient to use and maintain. 3. The optical cable joint box can be connected according to the requirements, and it is equipped with a fixed installation frame for tower or pole. 4. The fiber storage tray adopts aluminum bracket, which is light, strong and durable.