Pipes Martín BPC RM-14 (La Cañada) Dimensiones : Weight : 48 gr Diam. int. : 20 mm Diam. ext. : 30 mm Height int. : 39 mm Long : 144 mm Follow this link to rotate the pipe. Rafa Martín is perhaps the most recent craftsman of the Spanish panorama. Rafael Martín is from Valencia.. Enthusiastic, hard working, loves good jokes as much as anyone, and is a very good friend to his friends. His ' Pipes Martín ', are already at the disposal of smokers around the world.