Seamless Pipe Manufacturers and Suppliers

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External Diameter Accuracy: f8
Surface Roughness: Ra 0.2μm ~ Ra 0.4μm
Hard Chrome Thickness: 20 Micron ±10%
Surface Hardness: HV 850 (Minimum) up
Internal Diameter Accuracy: H7, H8, H9
Internal Roughness: Ra0.2μm ~ Ra0.8μm
Special Length: 13 M
Material: JIS STKM13C or Mechanical Construction Use Carbon Steel Pipes, Other Specifications Can be made Customer Request based on.

Seamless Pipe (ID Honed & OD Chromium Plated) For Telescopic Hydraulic


The Seamless Pipes are used for the telescopic hydraulic cylinder, such as the hydraulic mechanism adopted on the garbage trucks, fire rescue engines, lifts, multilevel car park servos and the like.

Golden Asia Industrial Company is a specialized manufacturer and supplier of Seamless Pipe. If you are interested in our seamless pipes, please contact us online.

Tolerance Of Piston Rod

Grade of tolerance
Dia mm Φ
fgh
f7f8g6h7h8h9
3mm -0.006
-0.016
-0.006
-0.020
-0.002
-0.008
0
-0.010
0
-0.014
0
-0.025
3mm-6mm -0.010
-0.022
-0.010
-0.028
-0.004
-0.012
0
-0.012
0
-0.018
0
-0.030
6mm-10mm -0.013
-0.028
-0.013
-0.035
-0.005
-0.014
0
-0.015
0
-0.022
0
-0.036
10mm-18mm -0.016
-0.034
-0.016
-0.043
-0.006
-0.017
0
-0.018
0
-0.027
0
-0.043
18mm-30mm -0.020
-0.041
-0.020
-0.053
-0.007
-0.020
0
-0.021
0
-0.033
0
-0.052
30mm-50mm -0.025
-0.050
-0.025
-0.064
-0.009
-0.025
0
-0.025
0
-0.039
0
-0.062
50mm-80mm -0.030
-0.060
-0.030
-0.079
-0.010
-0.029
0
-0.030
0
-0.046
0
-0.074
80mm-120mm -0.036
-0.071
-0.036
-0.090
-0.012
-0.034
0
-0.035
0
-0.054
0
-0.087
120mm-180mm -0.043
-0.083
-0.043
-0.106
-0.014
-0.039
0
-0.040
0
-0.063
0
-0.100
180mm-250mm -0.050
-0.096
-0.050
-0.122
-0.015
-0.044
0
-0.046
0
-0.072
0
-0.115
250mm-315mm -0.056
-0.108
-0.056
-0.137
-0.017
-0.049
0
-0.052
0
-0.081
0
-0.130
315mm-400mm -0.062
-0.119
-0.062
-0.151
-0.018
-0.054
0
-0.057
0
-0.089
0
-0.140
400mm-500mm -0.068
-0.131
-0.068
-0.165
-0.020
-0.060
0
-0.063
0
-0.097
0
-0.155

(unit)µ=0.001mm

 

Tolerance Of Honed Tube

 Grade of tolerance
Dia mm Φ
H
H7H8H9H10
3mm +0.010
0
+0.014
0
+0.025
0
+0.040
0
3mm-6mm +0.012
0
+0.018
0
+0.030
0
+0.048
0
6mm-10mm +0.015
0
+0.022
0
+0.036
0
+0.058
0
10mm-18mm +0.018
0
+0.027
0
+0.043
0
+0.070
0
18mm-30mm +0.021
0
+0.033
0
+0.052
0
+0.084
0
30mm-50mm +0.025
0
+0.039
0
+0.062
0
+0.100
0
50mm-80mm +0.030
0
+0.046
0
+0.074
0
+0.120
0
80mm-120mm +0.035
0
+0.054
0
+0.087
0
+0.140
0
120mm-180mm +0.040
0
+0.063
0
+0.100
0
+0.160
0
180mm-250mm +0.046
0
+0.072
0
+0.115
0
+0.185
0
250mm-315mm +0.052
0
+0.081
0
+0.130
0
+0.210
0
315mm-400mm +0.057
0
+0.089
0
+0.140
0
+0.230
0
400mm-500mm +0.063
0
+0.097
0
+0.155
0
+0.250
0

(unit)µ=0.001mm

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