Externally chrome-plated tubes
Externally chrome-plated precision tubes in E355+SR to EN 10305-1 for hydraulic cylinder production and piston bodies.

Technical specifications
| Parameter | Specification |
|---|---|
| Steel grade | E355+SR |
| Standard | EN 10305-1 |
| Diameter tolerance | ISO f7 |
| Roughness | Ra ≤ 0.20 μm |
| Chrome layer | min 20 μm |
| Chrome hardness | ≥ 900 HV0.1 |
| Corrosion resistance | Rating 9-10 / 200h NSS (ISO 10289) |
| Protection | Oiled on ID and OD |
Applications
- Pistons for hydraulic cylinders
- Telescopic cylinders
- Precision mechanical assemblies
Supply and transport from Plovdiv
Externally chrome-plated tubes is supplied through the Max Metal distribution center in Plovdiv for customers in Bulgaria and across Europe.
Externally chrome-plated precision tubes in E355+SR to EN 10305-1 for hydraulic cylinder production and piston bodies.
- 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 externally chrome-plated tubes RFQs
For a faster quotation for externally chrome-plated tubes, specify dimensions, steel grade or standard, length, quantity, and any processing or certificate requirements.
- Steel grade: E355+SR
- Standard: EN 10305-1
- Diameter tolerance: ISO f7
- Roughness: Ra ≤ 0.20 μm
- Applications: Pistons for hydraulic cylinders, Telescopic cylinders, Precision mechanical assemblies
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 pageEN 10305 precision tubes: parts 1, 2 and 4 compared
Part 1 covers seamless tubes, part 2 welded tubes, part 4 hydraulic and pneumatic systems. See the +C, +SR and +N conditions, and how the standard differs from H8 and H9 tolerances.
Open the pageQuestions about Externally chrome-plated tubes
Short answers on applications, RFQ inputs, cut-to-length service, and recurring supply.
Where are externally chrome-plated tubes used?
Typical applications of externally chrome-plated tubes include pistons for hydraulic cylinders, telescopic cylinders, and precision mechanical assemblies. Externally chrome-plated precision tubes in E355+SR to EN 10305-1 for hydraulic cylinder production and piston bodies.
What should an RFQ for externally chrome-plated tubes 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 externally chrome-plated tubes 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 externally chrome-plated tubes?
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.
Need a quote for your next project?