Hard chrome-plated bars
Chrome-plated bars for hydraulic and pneumatic cylinders with Ra ≤ 0.20 μm, ISO f7 tolerance, in C45, 20MnV6, and 42CrMo4 grades.

Technical specifications
| Parameter | Specification |
|---|---|
| Dimension range | Ø6 – Ø216 mm |
| Diameter tolerance | ISO f7 |
| Roughness | Ra ≤ 0.20 μm |
| Chrome layer | <20 mm: min 15 μm; >20 mm: min 20 μm |
| Chrome hardness | ≥ 900 HV0.1 |
| Straightness | <16 mm: 0.3/1000; >16 mm: 0.2/1000 |
| Corrosion resistance | Rating 9-10 / 200h NSS (ISO 10289) |
| Steel grades | C45, 20MnV6, 42CrMo4 |
Applications
- Piston rods
- Hydraulic and pneumatic cylinders
- Telescopic cylinders
Supply and transport from Plovdiv
Hard chrome-plated bars is supplied through the Max Metal distribution center in Plovdiv for customers in Bulgaria and across Europe.
Chrome-plated bars for hydraulic and pneumatic cylinders with Ra ≤ 0.20 μm, ISO f7 tolerance, in C45, 20MnV6, and 42CrMo4 grades.
- Transport from Plovdiv to customers in Bulgaria and Europe
- Recurring supply can be coordinated according to the production schedule
- Cut-to-length preparation according to customer specification where applicable
Technical details for chrome plated bars RFQs
For a faster quotation for chrome plated bars, specify dimensions, steel grade or standard, length, quantity, and any processing or certificate requirements.
- Dimension range: Ø6 – Ø216 mm
- Diameter tolerance: ISO f7
- Roughness: Ra ≤ 0.20 μm
- Chrome layer: <20 mm: min 15 μm; >20 mm: min 20 μm
- Applications: Piston rods, Hydraulic and pneumatic cylinders, Telescopic cylinders
Catalogues and files
Solutions and guides featuring this product
Application pages with tolerances, standards, and a comparison between executions.
Materials for hydraulic cylinders: which tube and which rod for which part
Each part of a hydraulic cylinder has its own requirement. Here is what decides the choice for the barrel, rod, piston and bushings, which product group to open, and when not. Sizes are on the product pages.
Open the pageCorrosion protection for piston rods and tubes: hard chrome, nickel-chrome or a stainless base
Hard chrome, a nickel-chrome coating or a stainless base: what the salt-spray rating means, how the three protections differ, and which product suits which environment.
Open the pageQuestions about Hard chrome-plated bars
Short answers on applications, RFQ inputs, cut-to-length service, and recurring supply.
Where are hard chrome-plated bars used?
Typical applications of hard chrome-plated bars include piston rods, hydraulic and pneumatic cylinders, and telescopic cylinders. Chrome-plated bars for hydraulic and pneumatic cylinders with Ra ≤ 0.20 μm, ISO f7 tolerance, in C45, 20MnV6, and 42CrMo4 grades.
What should an RFQ for hard chrome-plated bars include?
Include the required dimensions, length, quantity, grade or standard, surface requirements, tolerance requirements, and whether the material should be supplied cut to length or in stock lengths.
Can hard chrome-plated bars be supplied cut to length?
Yes. Max Metal can support customer-specific cutting of tubes and bars through the AMADA machine setup in the Plovdiv distribution center, subject to the requested dimensions and execution.
Does Max Metal offer recurring supply of hard chrome-plated bars?
Yes. When the application requires repeated deliveries, Max Metal can combine stock availability, covered storage, and coordinated deliveries to support recurring production programs.
Send specifications for a quotation.
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