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316L Stainless Steel Honed Tube OD 20 Mm ID 16 Mm WT 2 Mm For Hydraulic Cylinders
Honed tubes are widely recognized as hydraulic cylinder tubes because they are the primary material used in the production of hydraulic cylinders. Their precision-honed inner diameter provides excellent surface finish and dimensional accuracy, ensuring smooth piston movement and reliable sealing performance. Since the honing process is mainly applied to the tube's internal bore, they are also commonly referred to as honed ID tubes or ID honed tubing.
Product Specifications Of 316L Stainless Steel Honed Tube
Item
Specification
Product Name
316L Stainless Steel Honed Tube
Material Grade
316L / UNS S31603
Standards
ASTM A269, ASTM A213, ASTM A312, EN 10216-5
Manufacturing Process
Seamless + Cold Drawn + Precision Honed
Outside Diameter (OD)
20 mm
Inside Diameter (ID)
16 mm
Wall Thickness (WT)
2 mm
Length
1000–12000 mm or Customized
ID Tolerance
H7 / H8
Inner Surface Roughness
Ra ≤ 0.2–0.4 μm
Straightness
≤0.5 mm/m
Surface Finish
Honed ID / Bright Annealed or Polished OD
Certificate
EN 10204 3.1 MTC
Material & Composition Of 304 Cold Drawn Seamless Stainless Steel Tube
ID.:16 mm OD:20 mm
W.T.: 2 mm
Length: 1000–12000 mm or Customized
Material:316L
Product Features Of Hydraulic Cylinder Honed Tube
Precision cold drawn seamless construction
Honed internal bore for low friction performance
Excellent corrosion resistance in marine and chemical environments
High dimensional accuracy with H7/H8 tolerance
Smooth inner surface (Ra ≤ 0.4 μm)
Excellent straightness and concentricity
Superior weldability and machinability
Long service life under high-pressure conditions
Chemical Composition of 316L Stainless Steel
Element
Content (%)
Carbon (C)
≤0.03
Silicon (Si)
≤1.00
Manganese (Mn)
≤2.00
Phosphorus (P)
≤0.045
Sulfur (S)
≤0.030
Chromium (Cr)
16.0–18.0
Nickel (Ni)
10.0–14.0
Molybdenum (Mo)
2.0–3.0
Nitrogen (N)
≤0.10
Iron (Fe)
Balance
Mechanical Properties
Property
Value
Tensile Strength
≥485 MPa
Yield Strength
≥170 MPa
Elongation
≥40%
Hardness
≤95 HRB
Density
7.99 g/cm³
Elastic Modulus
193 GPa
Precision Honing Performance
Property
Value
ID Surface Finish
Ra 0.2–0.4 μm
ID Tolerance
H7 / H8
Roundness
≤0.02 mm
Straightness
≤0.5 mm/m
Concentricity
High Precision
Advantages of Precision Honing
Reduced seal wear
Lower friction coefficient
Improved hydraulic efficiency
Stable piston movement
Excellent sealing performance
Longer cylinder service life
FAQ
1. What is a 316L stainless steel honed tube?
A 316L stainless steel honed tube is a seamless precision tube that undergoes cold drawing and honing to produce a highly accurate inner diameter with an ultra-smooth surface for hydraulic and pneumatic cylinders.
2. Why choose 316L over 304 for hydraulic cylinders?
316L contains molybdenum, providing superior resistance to chlorides, seawater, and corrosive chemicals. It is the preferred choice for marine, offshore, food processing, and chemical industries.
3. What are the dimensions of this honed tube?
This product has an outside diameter of 20 mm, an inside diameter of 16 mm, and a wall thickness of 2 mm. Custom dimensions are also available.
4. What is the inner surface roughness after honing?
The honed inner surface typically achieves Ra 0.2–0.4 μm, ensuring excellent sealing performance and reduced friction.
5. Can you supply customized sizes?
Yes. JUDE STEEL offers customized OD, ID, wall thickness, length, tolerance, and machining services according to customer drawings or technical requirements.
6. What certificates do you provide?
We provide EN 10204 3.1 Material Test Certificates (MTC), PMI reports, UT reports, dimensional inspection reports, and third-party inspection certificates upon request.