SubtitleHydraulic Cylinder Tubes SRB finished or honed Introduction

Hydraulic Cylinder Tubes SRB finished or Honed made from E355 + SR steel.

A-TUBE TUL are cold drawn tubes with the internal surface SRB finished or Honed. The Skived and Roller burnished process is a complex process that is increasing the roughness qualities of the surface. The skiving knives pass first scraping the inside layer of metal. Burnishing rollers are passing afterwards cold working the tube and creating an internal mirror surface finish. Honing is an abrasive machining process that produces a precision surface on a metal workpiece. The process consists in scrubbing an abrasive stone against it along a controlled path. Honing is primarily used to improve the geometric form of a surface and the surface texture. We recommend A-TUBE TUL for all hydraulic cylinders.

A-TUBE TUL Technical Properties.

  • Diameter Tolerance for ID: ISO H8 (EN ISO 286-2). We can provide special tolerance at premium price.

  • Ovality – within the limits of ID tolerance.

  • Eccentricity is maximum 10% of the wall thickness according to EN 10305-1.

  • Surface Roughness – Internal surface Roughness for SRB finished tubes is Ra = max 0.25 µm. For Honed tubes Ra = max 0.40 µm.

  • Straightness max 1.0 [mm]/1000 [mm]; max 3.5 [mm]/6000 [mm]; max 4.0 [mm]/7000 [mm]; max 4.5 [mm]/8000 [mm].

Weldability of the hydraulic cylinder tubes SRB finished or Honed is excellent.

Machinability of the hydraulic cylinder tubes SRB finished or Honed is excellent.

Packaging A-TUBE products are supplied in 3 different packaging options:

  • Standard packaging is made with bundles oiled inside and closed with end caps.

  • Special Packaging (seaworthy protected) with additional cost is made with aluminum foil or vacuum bags.

As an Extra protection with additional cost we can provide also wooden boxes or pallets for cut machined parts or special oil for higher protection.

Marking in ASO HYDRAULICS & PNEUMATICS has a full trace-ability.

Each tube is marked individually with info regarding the product name, steel grade, norm, ODxID, heat no. The batch has a label with the following information: Order no, Item no, Heat no., Steel Grade, OD x ID; total length of the batch, Weight, no of pieces in the batch.

Chemical Composition table.

*CEV calculated with the formula: 
formula CEV 2.3.3

Mechanical Properties table.

Dimensional Properties table.

*Some diameters may be subject to a minimum quantity requested
**Lengths may vary depending on the Chroming process used
***Other diameters, lengths/cut lengths can be provided at premium price