Specifications of Honed tubes

Processing

Diameter(mm)

Length(m)

Straight(mm/m)

Diameter Accuracy

Thickness

Roughness(μm)

Cold drawing

40-320

≤12

0.2-0.5

H8-H10

±5%

0.8-1.6

Cold rolling

30-100

≥12

0.2-0.5

H8-H10

±5%

0.8-1.2

Drawing-honed

40-500

8

0.2-0.3

H7-H9

±5%

0.2-0.8

Drawing-roll

40-400

7

0.2-0.3

H8-H9

±5%

0.2-0.4

Deep-hole 

320-500

8

0.2-0.3

H7-H9

±8%

0.2-0.8

Deep-rolling

320-500

7

0.2-0.3

H8-H9

±8%

0.2-0.4

Hydraulic & Pneumatic Cylinder Tube Size and Precision

Inner Diameter(mm)

Tolerance on ID µm

H7

H8

H9

H10

30

+21
0

+33
0

+52
0

+84
0

>30-50

+25
0

+39
0

+62
0

+100
0

>50-80

+30
0

+46 0

+74
0

+120
0

>80-120

+35
0

+54
0

+87
0

+140
0

>120-180

+40
0

+63
0

+100
0

+160
0

>180-250

+46
0

+72
0

+115
0

+185
0

>250-315

+52
0

+81
0

+170
0

+210
0

>315-400

+57
0

+89
0

+140
0

+230
0

Application:

· Hydraulic cylinder
· Pneumatic cylinder
· Precise machine pipes
· Agriculture machine · Boiler construction
Machinery :
- Stamping machine
- Punching machine
- Blow molding machine
- Plastic injection machine
- Food machine
- Forklift

Automobiles:
- Crane
- Truck
- Truck lifter
- Shock absorber of car, motorcycle, bicycle
· Furniture: gas spring
· Exercise equipments
· Medical equipments
· Door closer
· Condensing unit Pipe