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ASTM A269 304 Cold Drawn Seamless Stainless Steel Hydraulic Cylinder Honed Tube is a high-precision stainless steel tube specially designed for hydraulic and pneumatic cylinder applications. Manufactured from 304 stainless steel seamless tube through advanced cold drawing and honing processes, it provides excellent dimensional accuracy, smooth internal surface finish, superior corrosion resistance, and reliable mechanical performance.
Product Specifications Of ASTM A269 304 Stainless Steel Honed Tube
Item
Description
Product Name
304 Hydraulic Cylinder Honed Tube
Material Grade
ASTM 304 / UNS S30400
Standard
ASTM A269
Manufacturing Process
Seamless + Cold Drawn + Honed
Type
Stainless Steel Hydraulic Cylinder Tube
Outer Diameter (OD)
20–500 mm
Inner Diameter (ID)
10–450 mm
Wall Thickness
2–30 mm
Length
1000–12000 mm or Customized
ID Tolerance
H7 / H8 / Customized
Inner Surface Roughness
Ra ≤0.2–0.4 μm
Straightness
≤0.5 mm/m
Surface Finish
Honed ID / Polished OD
Certificate
EN10204 3.1 MTC
Material & Composition Of 304 Cold Drawn Seamless Stainless Steel Tube
ID.:10–450 mm OD:20–500 mm
W.T.: 2–30 mm
Technique:Cold Draw
Material:304 316 ect stainless steel
Length: 1000–12000 mm or Customized
Product Features Of Hydraulic Cylinder Honed Tube
ASTM A269 standard stainless steel tube
304 austenitic stainless steel with excellent corrosion resistance
Seamless cold drawn construction for high precision
Precision honed internal surface
Low friction and excellent sealing performance
Tight dimensional tolerance
High concentricity and straightness
Excellent weldability and machinability
Suitable for high-pressure hydraulic applications
Chemical Composition (ASTM 304)
Element
Content (%)
Carbon (C)
≤0.08
Silicon (Si)
≤1.00
Manganese (Mn)
≤2.00
Phosphorus (P)
≤0.045
Sulfur (S)
≤0.030
Chromium (Cr)
18.0–20.0
Nickel (Ni)
8.0–10.5
Iron (Fe)
Balance
Mechanical Properties (304 Stainless Steel)
Property
Value
Tensile Strength
≥515 MPa
Yield Strength
≥205 MPa
Elongation
≥40%
Hardness
≤92 HRB
Density
7.93 g/cm³
Elastic Modulus
193 GPa
Precision Honing Performance
Item
Specification
Inner Surface Roughness
Ra 0.2–0.4 μm
ID Accuracy
H7 / H8
Roundness
≤0.02 mm
Straightness
≤0.5 mm/m
Bore Quality
Mirror-like finish
Manufacturing Process
High-quality 304 stainless steel billet selection
Seamless tube manufacturing
Solution annealing treatment
Pickling and passivation
Cold drawing for dimensional accuracy
Precision honing of inner diameter
Straightening and polishing
Dimensional inspection
Surface roughness testing
Non-destructive testing and final packaging
FAQ
1. What is a 304 stainless steel honed tube?
A 304 stainless steel honed tube is a precision seamless tube processed by cold drawing and honing to achieve a smooth inner surface and accurate dimensions for hydraulic cylinder applications.
2. Why is honing required for hydraulic cylinder tubes?
Honing creates a smooth and precise inner bore that reduces friction, improves sealing performance, and extends the working life of hydraulic cylinders.
3. What is ASTM A269 used for?
ASTM A269 is a standard specification for seamless and welded austenitic stainless steel tubing used in general corrosion-resistant and industrial applications.
4. What is the difference between 304 and 316L honed tubes?
304 stainless steel provides excellent general corrosion resistance, while 316L contains molybdenum for improved resistance in marine and chemical environments.
5. Can you supply custom hydraulic cylinder tubes?
Yes. JUDE STEEL supplies customized OD, ID, wall thickness, length, tolerance, and surface requirements according to customer drawings.
6. Do you provide material certificates?
Yes. We provide EN10204 3.1 Material Test Certificates (MTC), inspection reports, and third-party certificates upon request.