Hydraulic lines should NEVER be constructed of:

The choice of material for hydraulic lines is crucial for ensuring system safety and integrity under pressure. Galvanized pipe is not suitable for hydraulic applications because the galvanization process involves coating steel with zinc to prevent rusting. However, this zinc coating can flake off, especially under the stress of high-pressure fluid movement. These flakes can then circulate within the hydraulic system, leading to potential blockages, wear, or even failures in components sensitive to contaminants.

Furthermore, galvanized pipes are not designed to handle the temperatures and pressures typically found in hydraulic systems, further increasing the risk of failure. In contrast, materials like Teflon-lined hoses and specific tubing types are designed to withstand these conditions, allowing for safe and efficient fluid transport without the risks associated with galvanized materials. Black steel pipe, while often used in gas applications, is also not recommended for hydraulic systems due to its susceptibility to rust and lack of proper specifications for high pressure. Thus, the choice of galvanized pipe stands out as particularly unsuitable for constructing hydraulic lines.