SRB Tubes (Skived and Roller Burnished Tubes)-SHANDONG MULTISTEEL CO.,LTD

Description

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Products Description

Featureds and Benefits of Honed SRB Tubes

Superior Surface Finish

The SRB process ensures an excellent inner surface finish (Ra ≤ 0.2~0.4 μm), reducing friction, improving sealing performance, and extending equipment life.

High Dimensional Accuracy

SRB Honed Tubes achieve tight dimensional tolerances (H7-H9), ensuring precision and consistency for high-performance applications.

Increased Surface Hardness

The roller burnishing process forms a hardened surface layer, improving wear resistance and fatigue strength for enhanced durability.

Reduced Processing Defects

The combination of skiving and burnishing eliminates machining defects such as cracks and pores, ensuring higher quality tubes.

Improved Production Efficiency

The SRB process integrates skiving and burnishing in one step, reducing manufacturing time and cost.

Extended Seal Life

The smooth, burr-free inner wall reduces wear on seals, minimizing maintenance and replacement frequency.

Lower Energy Consumption in Hydraulic Systems

The smooth inner surface reduces fluid flow resistance, improving hydraulic system efficiency and saving energy.

Versatile Applications

SRB Honed Tubes perform well under high pressure, high temperature, and demanding conditions, making them suitable for hydraulic cylinders, pneumatic systems, and heavy machinery.

Specifications of SRB Finished Tubes

Mechanical Property:

Delivery condition	Cold finished(hard)(BK)		Cold drawn and stress-relieved(BK+S)
Steel grade	Rm MPa	Elongation A5(%)	Rm MPa	ReH MPa	Elongation A5(%)
C20	≥550	≥5	≥520	≥375	≥15
CK45	≥645	≥5	≥600	≥520	≥10
Q355B	≥640	≥5	≥600	≥520	≥14
Q355D	≥640	≥5	≥600	≥520	≥14
E355(ST52)	≥640	≥5	≥600	≥520	≥14
SAE1026	≥640	≥5	≥600	≥520	≥15

Tolerance：

Inner Diameter (mm)	Inner Diameter Tolerance (mm)				Thickness Tolerance (mm)
Inner Diameter (mm)	H7	H8	H9	H10	Thickness Tolerance (mm)
≤30	+0.021/0	+0.033/0	+0.052/0	+0.084/0	±7.5%>210mm±10%
30≤50	+0.025/0	+0.039/0	+0.062/0	+0.100/0
50≤80	+0.030/0	+0.046/0	+0.074/0	+0.120/0
80≤120	+0.035/0	+0.054/0	+0.087/0	+0.140/0
120≤180	+0.040/0	+0.063/0	+0.100/0	+0.160/0
180≤250	+0.046/0	+0.072/0	+0.115/0	+0.185/0
250≤315	+0.052/0	+0.081/0	+0.130/0	+0.210/0
315≤700	+0.057/1	+0.089/0	+0.140/0	+0.230/0

Applications of SRB Tubes

Hydraulic Cylinders

Used as the inner tube in hydraulic cylinders for construction, mining, and agricultural machinery, ensuring smooth piston movement and effective sealing.

Pneumatic Systems

Applied in pneumatic cylinders for automation equipment, enabling efficient air compression and precise mechanical motion.

Industrial Machinery

Utilized in heavy-duty industrial equipment such as presses, cranes, and injection molding machines for high-pressure operations.

Marine and Offshore Equipment

Suitable for hydraulic and pneumatic systems in marine vessels and offshore platforms due to their durability and resistance to harsh environments.

Skiving And Roller Burnishing VS Honing Process

Skiving and Roller Burnishing:

Removes excess material by mechanical skiving, followed by roller burnishing to smooth and harden the inner surface.
Achieves surface roughness around Ra 0.2–0.4 μm with good roundness and straightness.
Faster production, suitable for high-volume manufacturing.
Roller burnishing increases surface hardness and wear resistance.
Cost-effective, widely used in hydraulic and pneumatic cylinders.

Honing:

Uses abrasive honing stones to finely grind the inner surface for superior finish.
Achieves lower surface roughness, typically Ra 0.1–0.2 μm, for ultra-precision requirements.
Longer processing time, better suited for low-volume or high-end applications.
Provides smoother surface that reduces friction and extends seal life.
Ideal for applications demanding the highest inner surface quality in hydraulic systems.

MULTISTEEL Steel: China Honed & SRB Tube Manufacturer for Global B2B Buyers

MULTISTEEL is a direct factory supplying honed and SRB tubes for hydraulic and pneumatic cylinders. We support both ready-to-ship stock and custom specifications to meet a wide range of project requirements. Our products are exported globally, including to the United States, Canada, Australia, and Serbia. We offer competitive pricing and consistently reliable quality.