Chrome Plated ID Tubing, Pneumatic Cylinder Tubing, Hydraulic Cylinder Barrel

  • Internal Diameter Accuracy : F8
  • Internal Roughness : max Ra0.2μm
  • Straightness: 1-1.2/1000mm
  • Standard Length : 3M~11M
  • Internal Diameter : 18Ø~ 300Ø
  • Steel Grade : EN 1.0580, E355, JIS STKM13C, DIN ST52, SAE1020 Other specification can be supplied upon request. (Max ID: 1000mm)
  • Inquire
  • Product Feature
  • Tolerance form
  • Product Specification
Inquire
I.DxO.D. rr.mmØ Apply Pressure (Kg/cm²) Inquire I.DxO.D. rr.mmØ Apply Pressure (Kg/cm²) Inquire I.DxO.D. rr.mmØ Apply Pressure (Kg/cm²) Inquire
18x31 751 76.2x92.07 220 130x155 200
18x35 980 80x87 90 135x160 200
20x30 520 80x89 117 140x153 96
20x40 1040 80x90 130 140x155 115
25x35 416 80x95 195 140x160 148
30x36 208 80x100 260 140x165 185
30x40 346 82.55x92.07 130 140x170 225
30x45 550 82.55x95 160 145x170 180
32x42 325 82.55x98.4 200 145x175 220
35x45 297 85x95 122 150x160 70
38x50 330 85x100 190 150x163 90
38.1x50.8 335 88.9x101.6 150 150x168 125
40x44 104 88.9x105 190 150x170 140
40x46 156 90x100 115 150x175 173
40x48 208 90x105 173 150x180 210
40x50 260 90x110 231 152.4x171.5 130
40x55 390 95x110 165 152.4x177.8 170
40x60 520 95x115 220 160x172 78
45x55 231 98.4x111.13 140 160x178 117
45x60 346 100x107 73 160x180 135
50x55 104 100x109 94 160x185 162
50x57 145 100x110 104 160x190 195
50x58 166 100x114 146 165x190 160
50x60 208 100x115 156 165.1x190.5 160
50x65 312 100x116 166 170x190 125
50x70 416 100x120 208 170x195 150
50.8x63.5 260 100x125 260 170x205 220
55x65 189 100x130 312 175x190 95
55x70 283 101.6x117.48 160 175x195 120
57x70 240 105x120 150 177.8x203.2 150
60x70 173 105x125 200 177.8x215.9 220
60x72 208 107.95x125 170 180x196 92
60x75 260 110x120 95 180x205 150
60x80 346 110x125 142 180x210 175
63.5x76.2 210 110x130 189 180x216 208
63x69 99 110x135 240 180x225 260
63x71 132 114.3x133.35 180 200x216 83
63x73 165 115x130 140 200x220 100
63x76 215 115x135 185 200x232 166
63x80 280 120x132 104 200x242 210
65x75 160 120x135 130 203.2x228.5 130
65x80 240 120x140 173 203.2x241.3 195
65x85 320 125x135 75 220x260 190
70x80 148 125x137 100 225x254 135
70x82 178 125x140 125 250x267 71
70x85 238 125x145 166 250x290 170
70x90 297 125x152 224 250x298 200
75x85 138 127x146 155 300x318 62
75x90 208 130x142 96 300x355 195
75x95 270 130x150 160
76.2x88.9 170 130x153 190
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Product Feature

Chrome plated ID tubing for hydraulic cylinders in harsh environments

Chrome plated ID tubing is a critical component in high-performance hydraulic and pneumatic systems, particularly in demanding industrial environments. This specialized chrome plated ID tubing features a hard chrome layer plated on the internal diameter (ID) of seamless or honed steel tubes. The chrome layer, typically around 10μm in thickness, dramatically enhances the hydraulic cylinder barrel's wear resistance, corrosion protection, and internal surface durability.

As a core structure inside hydraulic actuators, the ID of the tube functions as the smooth internal surface that guides the piston and retains high-pressure hydraulic fluid. The integration of hard chrome plating allows the hydraulic cylinder barrel to endure constant mechanical friction while maintaining sealing integrity and dimensional precision. This makes chrome plated ID tubing essential for equipment that demands consistent performance over long periods, even in corrosive or high-wear environments.

Key benefits of chrome plated ID tubing include excellent internal diameter accuracy (F8 tolerance), ultra-low internal roughness (max Ra0.2μm), and straightness control of 1–1.2/1000mm. These features contribute to reduced seal wear, improved energy efficiency, and longer system life. The hard chrome layer also provides surface hardness exceeding HV850, ensuring resistance to abrasion and deformation.

Commonly manufactured in standard lengths ranging from 3M to 11M, and with internal diameters from 18Ø to 300Ø (and up to 1000mm upon request), this chrome plated ID tubing is made from high-quality materials such as EN 1.0580, E355, JIS STKM13C, DIN ST52, and SAE1020. These steel grades provide robust base strength, which, when combined with chrome plating, creates a highly reliable hydraulic cylinder barrel for various industries.

Applications of chrome plated ID tubing include use as hydraulic cylinder barrels in construction equipment, press machines, lifting systems, and marine hydraulics. It is also used in pneumatic cylinder tubing for systems requiring smooth, durable internal surfaces to ensure accurate piston movement. Furthermore, its corrosion-resistant properties make it ideal for environments involving water, chemicals, or outdoor exposure.

By combining high mechanical strength, precise internal dimensions, and long-lasting chrome protection, chrome plated ID tubing is the preferred choice for hydraulic and pneumatic systems where performance, reliability, and minimal maintenance are essential.


Enhancing Hydraulic Cylinder Barrel Performance with Chrome Plated ID Tubing

Chrome plated ID tubing is an essential upgrade for any high-performance hydraulic cylinder barrel. By applying a precision hard chrome layer to the pneumatic cylinder tubing’s internal surface, this specialized tubing dramatically increases durability, wear resistance, and reliability under extreme operating conditions. Unlike standard honed or untreated tubing, chrome plated ID tubing delivers superior performance and longevity in hydraulic systems.

The internal chrome plating creates a high-hardness surface that resists abrasion and maintains internal roundness and dimensional stability even under high pressure. This stability is critical to ensuring consistent piston motion and minimizing wear on seals. The smooth, mirror-like chrome surface also reduces friction, which directly enhances seal life and prevents internal leakage—contributing to higher hydraulic efficiency.

In corrosive or contaminated environments—such as those involving saltwater, chemicals, or abrasive particles—the ID chrome layer serves as a protective barrier, shielding the base steel from rust and surface degradation. This significantly extends the lifespan of the hydraulic cylinder barrel, reducing downtime and maintenance costs.

Though chrome plating increases initial production cost, it offers long-term value by minimizing failure risks and improving system performance. For demanding applications, chrome plated ID tubing ensures that hydraulic cylinders remain precise, durable, and reliable.

Tolerance form

Tolerance of Honing/Skiving and Roller Burnishing Seamless Steel Pipe (ID Hard Chrome), Pneumatic Cylinder Tube, Pneumatic Cylinder Tubing, Hydraulic Cylinder Tube and Chrome Tubing

Grade of tolerance
Dia mm Φ
F
F8
3mm +0.020
0
3mm-6mm +0.028
0
6mm-10mm +0.035
0
10mm-18mm +0.043
0
18mm-30mm +0.053
0
30mm-50mm +0.064
0
50mm-80mm +0.076
0
80mm-120mm +0.090
0
120mm-180mm +0.106
0
180mm-250mm +0.122
0
250mm-315mm +0.137
0
315mm-400mm +0.151
0
400mm-500mm +0.165
0

(unit)µ=0.001mm

Product Specification

Honing/Skiving and Roller Burnishing Seamless Steel Pipe (ID Hard Chrome), Pneumatic Cylinder Tube, Pneumatic Cylinder Tubing, Hydraulic Cylinder Tube and Chrome Tubing
Chemical Analysis & Mechanical Properties

Spec. Kind Mark Manuf Chemical Composition% Induction Tensile Test Bend Test Flattening Test
C Si Mn P S Tensile
(N/mm²)
Yield
(N/mm²)
ELOVG(%) Bend
Angle
Inside
Radius
Outside
Radius
Test Piece
11th 12 th
L
5 th
Test Piece
V
  13A STKM13A S
E
0.25> 0.35> 0.30
|
0.90
0.040
Under
0.040
Under
  380 220 30 25 90 6D 2/3D
13B STKM13B 450 310 20 15 90 6D 3/4D
13C STKM13C 520 390 15 10 - - -

 

Formula of Pipe Wall Thickness Pressure Resistant Gauge

t = P. D. / 200 S
t = Wall Thickness (mm)
P = The Largest Pressure (Kg/cm²)
D = Steel Pipe Inside Diameter (mm)
S = σ / 5 Kg / mm²
σ = The Lowest Numerical Value of Tensile (Kg/mm²)