1. Hydraulic oil pipe: The hydraulic oil pipe is one of the most important oil pipes in Heli forklift, which is mainly responsible for the transportation and control of hydraulic oil in the hydraulic system. Hydraulic oil pipes are mainly distributed in hydraulic system and hydraulic cylinder.

2. Fuel pipeline: The fuel pipeline is mainly distributed in the fuel system and is responsible for transporting fuel from the fuel tank to the engine for combustion. The tubing also includes an injector and an oil pump.

3. Brake tubing: The brake tubing is mainly distributed in the brake system, and is responsible for conveying brake fluid from the brake oil tank to the brake to realize braking. The brake pipe also includes a brake oil pump and a brake fluid tank.

4. Cooling water pipes: The cooling water pipes are mainly distributed in the engine and radiator, and are responsible for transporting the coolant from the coolant tank to the engine, reducing the engine temperature and protecting the engine and hydraulic system.