There are also DOT pressure standards used in the United States: 2N, 2P, 2Q
Ordinary pressure:Deformation pressure ≥1.20MPa, burst pressure ≥1.40MPa
Medium pressure:Deformation pressure ≥1.60MPa, burst pressure ≥1.80MPa
High pressure:Deformation pressure ≥1.80MPa, burst pressure ≥2.00MPa
2Npressure:Deformation pressure ≥1.00MPa, burst pressure ≥1.45MPa
2P pressure:Deformation pressure ≥1.10MPa, burst pressure ≥1.65MPa
2Q pressure:Deformation pressure ≥1.24MPa, burst pressure ≥1.86MPa