This chair is designed utilizing the transformation of PVC pipes under hot processing.　The reformed pipes are implanted beneath the wooden seating area and blended inside smoothly. By splitting and removing half of the PVC pipes partially and then bending them into 90 degree angles, the back-support and armrest is not only been constructed but also possessed a unique shape in each corner. As a result, this chair can be easily assembled without using any hardware or glue. From inside out, the chair can be joint in a universal harmony. The surface of PVC pipes is carefully polished with a fine mat finish. In this PVC Tube Chair, I want to take my stand that a low-cost, light-weight and durable chair has its own value in this chaotic society, which values the breadth and neglects the depth in design and craft industry.