Test pressure
(Mpa)

Nominal pressure(Mpa)

Pressure (class)

JIS (Mpa)

1.6

2.5

4.0

6.4

150

300

600

10K

20K

Strength test

2.4

3.8

6.0

9.6

3.1

7.8

15.3

2.4

3.8

Sealed test

1.8

2.8

4.4

7.0

2.2

5.6

11.2

1.5

2.8

Airtight test

0.5~0.7