Size

Nominal Constant

Minimum Viscosity as per BS/IP/SL(S)

Viscosity Range as per ASTM D 446

1

0.0008

0.8

1.05-1.05

2

0.003

1.1

2.1-3.0

3

0.01

2.0

3.8-10

4

0.03

6

6.0-30

5

0.1

20

20-100

6

0.3

60

60-300

7

1

200

200-1000

8

3

600

600-3000

9

10

2000

2000-10000