Inside Chrome Plated tubes

Honed Tube / Chrome Plated Inside Tube – Technical Specifications

Product Overview

The honed tube (cylinder tube / chrome plated inside tube) is a precision-engineered steel pipe designed for hydraulic and pneumatic cylinder applications. With high dimensional accuracy and superior internal surface finish, it ensures smooth piston movement, reduced friction, and extended service life.

1. Specifications

• Cylinder Inner Diameter (ID): 40 mm – 400 mm

• Length: Customizable

• Thickness Tolerance: ±5%

• Condition: BKS (Cold finished)

2. Material Options

• 20# Steel (ASTM A106B / ST45 / E255)

• 45# Steel (CK45)

• 16Mn Steel (ST52 / E355)

• 25Mn Steel

• 27SiMn Steel

3. Precision & Tolerance

• Inner Diameter Tolerance: H8

• Straightness: 0.2 – 0.5 mm/m

• Surface Roughness: ≤ 0.4 μm

4. Chrome Plating (Optional)

• Internal Chrome Thickness: 15 – 30 microns

• Improves wear resistance, corrosion resistance, and durability

5. Supply Condition

6. Mechanical Properties

7. Surface Quality

• Precision honed internal surface

• Low friction for smooth piston operation

• High wear resistance for long-term use

8. Standard Size Range (ID × OD in mm)

Common sizes include:

• 40×50, 50×60, 60×70, 70×90, 80×100

• 100×120, 125×150, 140×160, 160×180

• 180×220, 200×250, 250×300, 300×350

• Up to 350×370 mm

(Custom sizes available on request)