Exhaust pipe

An exhaust pipe includes a first end, a second end, and a wall connecting the first end to the second end. The first end has a first opening and the second end has a second opening in fluid communication with the first opening to define a bore. The wall includes an inner curved section and an outer curved section, the outer curved section including a notch. The notch includes a first inwardly extending portion and a second inwardly extending portion. The second inwardly extending portion includes a through hole having an inner opening and an outer opening. The inner opening is located between the outer opening and the second opening. The diameter of the outer opening is smaller than that of the inner opening. The thickness of the second inward extending part is smaller than the diameter of the outer opening. 一种排气管包括第一端、第二端和将第一端连接到第二端的壁。第一端具有第一开口，并且第二端具有第二开口，该第二开口与第一开口流体连通以限定钻孔。壁包括内弯曲区段和外弯曲区段，该外弯曲区段包括凹口。凹口包括第一向内延伸部和第二向内延伸部。第二向内延伸部包括具有内开口和外开口的通孔。内开口位于外开口与第二开口之间。外开口的直径小于内开口的直径。第二向内延伸部的厚度小于外开口的直径。