Hydraulic metal fittings are widely used in industrial applications because of their various benefits, including:

1. Durability: Hydraulic metal fittings are made of high-quality materials, such as stainless steel or brass, which make them highly resistant to wear and tear, corrosion, and rust. This makes them ideal for use in harsh industrial environments.
2. Reliability: Hydraulic metal fittings are designed to withstand high pressure and temperature variations, ensuring that they can handle the demands of heavy-duty industrial applications. They are also less prone to leakage and other types of failures compared to other types of fittings.
3. Versatility: Hydraulic metal fittings are available in a wide range of sizes, shapes, and configurations to meet various industrial needs. They can be used in a variety of applications, including fluid transfer, hydraulic systems, and compressed air systems.
4. Easy to Install: Hydraulic metal fittings are easy to install and replace, which can save time and reduce maintenance costs. They can also be adapted to existing systems with minimal modifications.
5. Safety: Hydraulic metal fittings are designed to be safe and reliable, ensuring that workers are protected from any potential hazards. They are also leak-free, preventing any dangerous spills or accidents.

Overall, hydraulic metal fittings are an excellent choice for industrial applications due to their durability, reliability, versatility, ease of installation, and safety features.