Pneumatic brake pipe assembly for vehicle

The utility model discloses a pneumatic brake pipe assembly for a vehicle. The connector comprises a conical surface connector body, a nut, a pneumatic brake metal pipe and a spherical surface protrusion. A spherical bulge with a sealed spherical surface is formed at the end of the pneumatic brake metal pipe; a nut is fixedly sleeved at the outer ring pipe of the pneumatic brake metal pipe; a conical surface joint body is arranged at an outer ring pipe of the pneumatic brake metal pipe; an outer thread is arranged on the inner wall, in contact with the pneumatic brake metal pipe, of the conical joint body; the air pressure brake metal pipe is in threaded connection with the conical surface joint body through a nut and an external thread; the utility model discloses a pneumatic brake pipe assembly for a vehicle. The pneumatic brake steel pipe is connected with the joint body; a clamping sleeve connection mode used in the prior art is reduced; sealing is achieved through mutual extrusionof the spherical surface