Hollow Bar Manufacturer, Chrome Plated OD Tubing, Chrome Plated Tube

  • External Diameter Accuracy : f8
  • Surface Roughness : max Ra 0.2μm
  • Surface Hardness : min HV 850
  • Roundness : tolerance × 1/2
  • Hard Chrome Thickness: <Φ22.225mm: min 15 μm
                                             ≧Φ24mm: min 20 μm
  • Standard Length: 2M - 6M up
  • Steel Grade: JIS STKM13C, STKM11A, STKM13A, JIS S45C, SAE1045, DIN CK45, EN C45E, ASTM 1045, EN 19
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  • Product Feature
  • Tolerance form
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I.D x O.D rr. m Ø Inquire I.D x O.D rr. m Ø Inquire I.D x O.D rr. m Ø Inquire I.D x O.D rr. m Ø Inquire
4x8 20x40 40x60 70x90
6x12 30x40 45x60 75x95
14x20 24x45 50x70 80x100
19x25 30x45 60x80 85x100
18x30 25x50 63x80 100x120
20x30 38x50 65x85 130x150
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Product Feature

Top chrome plated tube suppliers offering corrosion-resistant OD tubes

Looking for reliable chrome plated tube solutions with superior surface performance and durability? As one of the top chrome plated tube suppliers offering corrosion-resistant OD tubes, we provide tubes engineered for precision hydraulic and pneumatic applications. Our chrome plated tubes feature external diameter accuracy of f8, surface roughness max Ra 0.2μm, and a minimum surface hardness of HV 850. The hard chrome plating thickness ranges from min 15 μm for tubes under Φ22.225mm and min 20 μm for tubes ≥Φ24mm, ensuring extended wear and corrosion resistance. Roundness is controlled to tolerance × 1/2, offering high concentricity and sealing performance. Available in standard lengths from 2M to 6M+, our chrome plated tubes are manufactured using high-grade steels such as JIS STKM13C, STKM11A, STKM13A, S45C, SAE1045, DIN CK45, EN C45E, ASTM 1045, and EN 19. Ideal for telescopic cylinders, exposed barrel systems, and outdoor or marine equipment.


Premium Chrome Plated OD Tubing from Trusted Hollow Bar Manufacturers

As one of the leading hollow bar manufacturers, we offer high-performance chrome plated OD tubing specifically engineered for use in hydraulic cylinder systems. These chrome plated OD tubing are designed for demanding applications where external surface durability, corrosion resistance, and dimensional accuracy are critical.

Unlike honed tubes, which are precision finished internally to ensure excellent seal performance and minimal friction for the piston, chrome plated OD tubes are externally plated with hard chrome. This provides a hardened, corrosion-resistant surface ideal for exposed components such as piston rods and telescopic cylinder barrels.

Our chrome plated OD tubing features an average chrome thickness of 20 µm. External diameter tolerances are tightly controlled (typically to f8), ensuring smooth installation and system alignment. The chrome-plated surface not only offers excellent wear resistance but also enhances longevity in outdoor or corrosive environments.

These chrome plated OD tubes are especially well-suited for use in:
1. Telescopic cylinders where outer barrel movement occurs
2. Mobile or marine hydraulic systems exposed to harsh environments
3. Applications where structural aesthetics and external protection matter

While honed tubes remain essential for precise internal surface conditions, chrome plated OD tubing excels in external performance. For best results, engineers should consider application-specific requirements before choosing between the two.

We supply both honed and chrome plated OD tubes, manufactured to international standards and available in a variety of steel grades, including STKM13C, STKM11A, DIN CK45, SAE1045, and EN C45E. As expert hollow bar manufacturers, we also provide custom lengths, precision cutting, and material consulting to meet your specific project needs

Tolerance form

Tolerance of precision hollow shaft, hollow piston rod, piston rod, pipe rod, cylinder chrome tube

Grade of tolerance 
Dia mm Φ
f g h
f7 f8 g6 h7 h8 h9
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