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Seamless Steel Tubes for Hydraulic Cylinder Seamless Steel Tubes for Hydraulic Cylinder Seamless Steel Tubes for Hydraulic Cylinder

Seamless Steel Tubes for Hydraulic Cylinder

As indicated by its name, this seamless steel tube is especially designed and crafted to fit for hydraulic cylinders. On the tube surface, there is residual compressive stress which is helpful to close micro cracks on the surface, thus hindering corrosion process. Aside from providing good anti-corrosion property, this residual compressive stress also alleviates the generation or expansion speed of fatigue crack, thereby improving the fatigue strength of our honed steel tube.

The hydraulic cylinder tubing is produced through roll forming, and a cold hardened layer not only enhances abrasive resistance of inner wall, but also avoids burning caused by grinding. After roll forming, the surface roughness is cut down as well.

Feature
For this seamless steel tube, its surface roughness (Ra) is basically lower than 0.08μm, and its ovality is not over 0.01mm. The residual compressive stress helps to improve fatigue strength by 30%, and the surface hardness is also higher. Our seamless hydraulic cylinder tubes match well with each other to reduce abrasion, so, longer service life is expectable, and the machining cost is also cut down.

Technical Data
1. Standard: EN 10305-1 for cold formed tubes
2. Material: E355 (Others on request)
3. Delivery condition: BKS (SR)
4. Outside diameter: 50-230mm
5. Inside diameter: 40-200mm
6. OD tolerance: Conform to EN 10305-1
7. ID tolerance: Conform to H8, ISO 286 part 2
8. Inner surface: Honed or roller burnished
9. Max. surface roughness: 0.3μm
10. Quality: Inspection Certificate EN 10204-3.1 (others on request)

Our seamless steel tubes are divided into two types, one is seamless cold drawn hydraulic cylinder tube that suits for honing and burnishing, and the other is seamless cold drawn hydraulic cylinder tube that suits for boring and burnishing.

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