High Accuracy Cold Draw Honed Cylinder Pipe

　

Product Description and Field Application:

Applied to hydraulic and pneumatic cylinders for engineering machineries, cylinders of petoleum suction pumps,conveying roller Pipe for transporting textiles ect

　

Executive Standards:

ASTM A519 DIN 2391

　

Steel Grade:

ST35 ST45 CK45 ST52 27SiMn, 304/304L 316/316L

　

Pressure Cylinder Size and Precision

Processing

Diameter(mm)

Long(m)

Straight(mm/m)

Diamet accuracy

Thickness

roughness(μm)

Drawing

40-320

≤12M

0.2-0.5

H8-H10

±5

0.8-1.6

Rolling

30-100

≥12M

0.2-0.5

H8-H10

±5

0.8-1.2

Drawing-May

40-500

8M

0.2-0.3

H7-H9

±5

0.2-0.8

Drawing-roll

40-400

7M

0.2-0.3

H8-H9

±5

0.2-0.4

Deep-hole

320-500

8M

0.2-0.3

H7-H9

±8

0.2-0.8

Deep-rolling

320-500

7M

0.2-0.3

H8-H9

±8

0.2-0.4

　

Dimension Tolerance

1.      O.D.

Outside diameter (mm)

Tolerance

Outside diameter (mm)

Tolerance

　

≤Ф40

±0.15

Ф160-200

±0.80

　

Ф40-60

±0.25

Ф200-240

±1.00

　

Ф60-80

±0.30

Ф240-340

±1.50

　

Ф80-100

±0.40

Ф340-440

±2.00

　

2.      I.D.

Inside diameter

Thickness

Tolerance of I.D.(mm)

(mm)

(mm)

H7

H8

H9

H10

Φ30-50

＜7.5

0.025

0.039

0.062

0.1

0

0

0

0

Φ50-80

＜10

0.03

0.046

0.074

0.12

0

0

0

0

Φ80-120

＜15

0.035

0.054

0.087

0.14

0

0

0

0

Φ120-180

＜20

0.04

0.063

0.1

0.16

0

0

0

0

Φ180-320

＜25

0.046

0.072

0.115

0.19

0

0

0

0