... welding technology 3. plating plating evenly 4.beautiful shapeDetail: One exhaust system includes 2 sharp staight pipes, 2 flat straight pipes, 2 ... , 2 galvanizing clamps, 4 stainless clamps and some pads. The exhaust pipe is widely used in heavy duty truck. It is ... one of the part in the heavy duty truck exhaust pipe. It has special polishing technology and automatic oxy-arc ...