PA Air Brake tube for Air Brake System Made from PA material Available in a variety ... non-reinforced nylonSAE Type B tubing has eamless extruded nylon, core with fiber reinforced protective nyon cover150 psi maximum working pressureWithstands ... turn:110,90,80,70,60,50mm etc. • Helix turns/coil:12,16,18,20,22,24,26,28,30 coils ... ,M18 ,M22 ,1/2"fittings etc. or no fitting PA Air Brake tube