... black, blue, whitestandardAmerican style, European styleNylon tubing (PA tube, Polyamide tube), Trailer Air Brake Hose, seven cable volute producted by ... air brake pipeline, Engine oil inlet, Engine oil return tube, pneumatic piping; every connection line of tractors, trucks, ... to impact, smmothly,safe and so on. 4.Working pressure: 1.2~15Mpa5.Working Temperature: -40 centidegree ~ 120centidegree ...