The pipes are classified by the number of stars assigned, from 1 to 3 or a sun.

1 STAR:

Sandblasted pipes with a good quality of blast and simple shape

2 STARS:

Sandblasted pipes with a good quality of blast and complex shape

Sandblasted pipes with a very good quality of blast and simple shape

Smooth pipes with good grain and simple shape

3 STARS/MOON:

Sandblasted pipes with a very good quality of blast and complex shape

Smooth pipes with good grain and complex shape

Smooth pipes with very good straight grain and simple shape

SUN:

Very special pipes with extremely good grain, only very few pieces per year