According to national standards: PE pipes should have permanent markings on them when they leave the factory, and the distance should not exceed two meters.

Peugeot should contain at least the following contents

1. Manufacturer’s name or trademark

2. Nominal outer diameter

3. “Standard "Dimensional ratio" or "SDR"

4. Material grade

5. Nominal pressure or PN

6. Production date

7 , adopt standard number