Place of Origin
Chongqing, China
Product Name
Railway Air Brake Coupling Hose
Elongation
Arrange from +2%-4% at press of 5.0Mpa
Leakage test
Keep 14.0Mpa for 5-5.5 mins
Low temperature leak test
-40℃±2℃ *24h with bending180°
Friction test(Adhesion)
Between tube and plies:4.0kN/mm; Between cover and plies:3.8kN/mm
Ozone test
Concentration 50 pphm with temperature of 40℃ last for 72 h
Certification
ISO,CRCC,UIC