Hard Chrome Rod for Hydraulic

Hard Chrome Rod for Hydraulic

Professional manufacturer of Hard chrome rod for hydraulic, founded in 2004, major in honed tube, hydraulic tube, chrome rod, chrome bar, chrome shaft, at present we are biggest manufacturer and wholesaler in north of China. Hard chrome rod for hydraulic Hard Chrome Rod Professional manufacturer...

Product Details

Professional manufacturer of Hard chrome rod for hydraulic, founded in 2004, major in honed tube, hydraulic tube, chrome rod, chrome bar, chrome shaft, at present we are biggest manufacturer and wholesaler in north of China. 


Hard chrome rod for hydraulic

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Hard Chrome Rod 

Professional manufacturer of hard chrome rods and hydraulic barrel (honed tube, skived and roller burnished tubes). We stock a wide range of hard chrome rod and hydraulic barrel (honed tube, skived and roller burnished tube) also for various engineering companies.

The various types of rods/bars we have in stocks are standard hard chrome rods (C45) and induction hardened chromed rods (C45). Other types of rods such as nickel chrome rod and stainless steel 304 or stainless steel 316 chrome rods are also available on request. 


Standard Parameters

Steel Grade

C45E (EN 10083)

Tolerance

ISO f7

Roundness

diameter tolerance / 2

Standard Length

- for Ø ≤ 60 mm: 5600 – 6200 mm
- for Ø ≥ 60 mm: 5800 – 7200mm
Upon request: special lengths on all diameters

Surface Roughness

Ra max. 0.20 µm (statistic average: 0.05 – 0.15 µm)

Chrome Layer Thickness

≤ Ø20 mm: min. 15 µm
≥ Ø20 mm: min. 20 µm

Chrome Layer Hardness

min. 900 HV(0.1)

Straightness

≤ Ø16 mm: max. 0.3 mm : 1000 mm
> Ø16 mm: max. 0.2 mm : 1000 mm

Mechanical Properties

according to EN 10083-2


Induction Hardened Chromed Rod

Standard Parameters

Steel Grade

C45E (EN 10083)

Tolerance

ISO f7

Roundness

diameter tolerance / 2

Standard Length

- for Ø ≤ 60 mm: 5600 – 6200 mm
- for Ø ≥ 60 mm: 5800 – 7200mm
Upon request: special lengths on all diameters

Surface Roughness

Ra max. 0.20 µm (statistic average: 0.05 – 0.15 µm)

Surface Hardness

min. 55 HRC

Hardened Layer Depth

From 0.4 to 3.5 mm

Chrome Layer Thickness

≤ Ø20 mm: min. 15 µm
≥ Ø20 mm: min. 20 µm

Chrome Layer Hardness

min. 900 HV(0.1)

Straightness

≤ Ø16 mm: max. 0.3 mm : 1000 mm
> Ø16 mm: max. 0.2 mm : 1000 mm

Mechanical Properties

according to EN 10083-2


Nickel and Hard Chrome Rod 

The nickel and chrome plating technology is the solution to extreme environments with intense corosion: 

Offshore, marine conditions

Military applications, wind, solar and aerospace sector

Agriculture, mining industry, oil and gas industry

The nickel layer is completely free of cracks, pores and by this, the base material is isolated from the atmospheric corrosion, while the chrome layer ensures a very good wear resistance. 

Standard Parameters

Steel Grade

C45E, 20MnV6 / 38MnVS6

Tolerance

ISO f7

Dimension

Ø20 - 160 mm / Ø3/4” – 6”

Roundness

diameter tolerance / 2

Standard Length

Up to 6000 mm
Upon request: special lengths on all diameters

Surface Roughness

Ra max. 0.20 µm (statistic average: 0.05 – 0.15 µm)

Nickel Layer Thickness

min. 10 µm

Chrome Layer Thickness

min. 25 µm

Nickel Layer Micro Hardness

min. 300 HV(0.1)

Chrome Layer Micro Hardness

min. 900 HV(0.1)

Straightness

max. 0.20 mm/1000 mm


Hydraulic Barrel 

Honed Tube / Skived and Roller Burnished Tube

The hydraulic barrel we have in stock is seamless cold drawn tubes (E355/ST52, E235/C20), being honed / skived to achieve the required tolerance and surface roughness. Internal diameter tolerance of the tube up to H8 while the surface roughness is Ra ≤ 0.22 µm 

Standard Parameters

Steel Grade

E355 (EN 10305-1) / St52-3 (DIN 2391)

Heat Treatment

+SR (EN 10305-1) / BK+S (DIN 2391)

Diameter Range (metric)

from OD 48 x ID 40 mm to OD 350 x ID 300mm
(Upon request: bigger dimensions)

Diameter Range (imperial)

from OD 2" x ID 1½" mm to OD 10" x ID 9"
(Upon request: bigger dimensions)

Tolerance

ISO H8

Standard Length

5000 - 8000 mm
 
(Upon request: special lengths)

Surface Finish (ID)

Ra ≤ 0.22 µm

Local Deviation

max. 1 mm : 1000 mm

Total Deviation

- tubes with length ≤ 6 m: max. 3.5mm : length
- tubes with length > 6 m: for each meter over 6 m
the tolerance must be increased by 0.5 mm

Ovality

within the OD dimensional tolerance

Mechanical Properties

Rm Tensile Strength (N/mm2) : min 580
Rp0.2 Yield Point (N/mm2) : min 435
A5 Elongation (% min) : 10

Chemical Composition

C - 0.22 max
Mn - 1.60 max
Si - 0.55 max 
P - 0.025 max 
S - 0.025 max


Product Processing

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Quality Inspection and Testing


Packing and Delivery

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Why Choice Us 

1.Professional, rich experience, reliable.

2.One-stop solution for honed tube, chrome rod.

3.Full range of size and material, ready stock goods with fast delivery

4.Customizable, non-standard sizes available

5.Small quantity acceptable

6.Refund or replace if any quality issue.


About Us 

Qingzhou Longyue Hydralic Machinery Co., Ltd, was established in 2004, reowned firm engrossed in manufacturing honed tube, chrome rod over 14years. ISO9001 certificated.

Annual output 12 thousand tons, at present we are the biggest manufacturer in North China. 

Rich experience in production and export, prefect products & services gained recognition of clients from 20 countries & area. 

We sincerely hope there would be a chance for us to start business and build long term relationships may from an inquiry soon.


Products range as following:

Honed tube

Finished barrel for hydraulic cylinder

Ready to honed tube.

Cold drawn tube.

Hard chromed rod, bar, shaft.

Induction hardened rod, bar, shaft

Finished piston rod for hydraulic cylinder


Main market as following.

Domestic market

Middle East

South Eastern Asia

North Africa

South America

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