Outside diameter, inch (mm)

Diameter tolerance, inch(mm), +/-

Permissible variaton in wall thickness, %, +/-

<1 (25.4)

0.004 (0.102)

10

1~1.5 (25.4~38.1)

0.005 (0.127)

10

1.5~2 (38.1~50.8)

0.006 (0.152)

10

2~2.5 (50.8~63.5)

0.007 (0.178)

10

2.5~3.5 (63.5~88.9)

0.008 (0.254)

10

Grade

Tungsten content

Contents of Impurity Elements

Total Content

Content of each element

WAL1,WAL2

99.95%min

0.05%nax

0.01%max

W1

99.95%min

0.05%max

0.01%max

W2

99.92%min

0.08%max

0.01%max