1. Cleanliness：residual impurity inside  ≤ 0.194mg/cm2
2. Expansion Volumeof Brake hose: not less than 0.35mL/m under 6.9Mpa; not less than 0.55mL/m under 10.3Mpa.
3. Burst pressure:  Not less than 49Mpa for brake hose and not less than 110Mpa for brake pipes.
4. Brake Hose Tensile Strength Test: Not less than 1500N.
5. Salt spray Test: No red rust for joint during 480h; no red rust for tube during 1000h.

Brake pipeline include brake pipe and brake hose. 
Brake Pipe is consist of double wall steel tube, bolt joint, clamp. OD of tube include φ4.76、φ6、φ8 three specifications. We supply the goods as assembly packing.
Brake hose is consist of EDPM hose, metal joint, rubber fittings. Surface galvanizing process for metal component. Using double heading horizontal crimping.