A good pipe not only has artistic and collector's value, but also has become an important spiritual paradise for "pipe smokers." Nowadays, pipes have regained their popularity among smokers, and websites and specialty stores about pipes have come and gone. For pipe smokers, a pipe is a work of art, and the material used to make a pipe must meet many conditions: it must be tough, light, heat-resistant, non-flammable when exposed to fire, odorless when lit, and still clear and shiny when stroked for a long time...