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27SiMn Hydraulic Cylinder Steel Tube – Skiving tube – Precision Honed Tube DIN 2391 BKS

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Description

27SiMn Hydraulic Cylinder Steel Tube – Skiving Tube – Precision Honed Tube DIN 2391 BKS

Dimensions:

  • Outer Diameter (O.D): 20 mm – 520 mm
  • Inner Diameter (I.D): 12 mm – 510 mm

Tolerances and Specifications:

  • I.D Tolerance (mm): H7 – H10
  • Roughness (I.D): ≤ 0.3 μm
  • Straightness: 0 – 0.60 mm/meter
  • Minimum Order Quantity (MOQ): 1.0 – 3.0 tons

Inspection and Quality Control:

  • Inspection Types: Chemical analysis, Mechanical analysis, Roughness, Straightness, Surface quality, and Dimension report.
  • Third-party Inspection: Acceptable

Origin:

  • Place of Origin: Jiangsu/Hubei, China

Applications of 27SiMn Hydraulic Cylinder Steel Tube

The 27SiMn hydraulic cylinder steel tube is versatile and used in various applications, such as:

  • Hydraulic cylinders
  • Hydraulic jacks
  • Hydraulic oil cylinders
  • Pneumatic cylinders
  • Swivel cranes
  • Injection machines
  • Petrifaction oil pumps
  • Coal mining machinery
  • Engineering machinery
  • Crane and transport machinery
  • Auto transmission axes
  • Plastic machinery
  • Absorbers
  • Spin printing and dyeing

Quality Standards

Our honed tubes comply with the following quality standards:

  • DIN 2391: Seamless Precision Steel Tubes
  • EN 10305: Steel Tubes for Precision Applications (Seamless Cold Drawn Tubes)

Chemical Composition (%)

Steel Grade C Si Mn P S
27SiMn 0.24 – 0.32 1.10 – 1.40 1.10 – 1.40 0.035 max 0.040 max

Tolerances for Inner Diameter (mm)

Inner Diameter Range (mm) H7 H8 H9 H10
10 < ID ≤ 18 -0, +0.018 -0, +0.027 -0, +0.043 -0, +0.070
18 < ID ≤ 30 -0, +0.021 -0, +0.033 -0, +0.052 -0, +0.084
30 < ID ≤ 50 -0, +0.025 -0, +0.039 -0, +0.062 -0, +0.100
50 < ID ≤ 80 -0, +0.030 -0, +0.046 -0, +0.074 -0, +0.120
80 < ID ≤ 120 -0, +0.035 -0, +0.054 -0, +0.087 -0, +0.140
120 < ID ≤ 180 -0, +0.040 -0, +0.063 -0, +0.100 -0, +0.160
180 < ID ≤ 250 -0, +0.046 -0, +0.072 -0, +0.115 -0, +0.185
250 < ID ≤ 315 -0, +0.052 -0, +0.081 -0, +0.130 -0, +0.210
315 < ID ≤ 400 -0, +0.057 -0, +0.089 -0, +0.140 -0, +0.230
400 < ID ≤ 500 -0, +0.063 -0, +0.097 -0, +0.155 -0, +0.250

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