Name: China 304 Stainless Steel Honed Tube Suppliers, Manufacturers, Factory - Wholesale Price - Torich
Brand: Torich
SKU: 277348395

304 Stainless Steel Honed Tube

304 Stainless Steel Honed Tube is a precision-machined tube with a highly polished inner surface. This tubing is produced through a honing process to achieve precise dimensional tolerances, smoothness, and roundness. This tubing is widely used in hydraulic and pneumatic cylinders, where its smooth inner bore ensures efficient sealing, reduces friction, and extends service life.

Outer Diameter: 5mm-420mm (customizable)
Wall Thickness: 0.5mm-55mm (customizable)
Length: Can be customized upon request
Steel Grade:304 316 309 321
Standard: ASTM A213, ASTM A269

Products Description

Our Advantages

1. Smooth Inner Surface
304 Stainless Steel Honed Tube is manufactured using a precision cold drawing process followed by honing or roller polishing. The inner surface roughness can reach Ra ≤ 0.4 μm, reducing friction between the piston and cylinder wall. This ensures smooth piston movement, thereby improving response speed and efficiency.

2. Corrosion Resistance
Our stainless steel honed tubes are made from high-quality stainless steel, resisting rust and chemical corrosion caused by hydraulic oil and environmental moisture, ensuring long-term, reliable operation in marine, industrial, or outdoor applications.

3. Excellent Mechanical Properties
304 Stainless Steel Honed Tube possesses good strength, ductility, and toughness, maintaining stable performance under cyclic pressure conditions. They are also annealed to eliminate internal stress and improve toughness.

4. Surface Quality
The outer surface of the tube is polished to ensure it is free from cracks, overlaps, folds, and other defects; the inner surface is honed to a high degree of smoothness, reducing seal wear and preventing contamination of the hydraulic system.

5. Quality Control
TORICH's honed tubes undergo strict quality control, including chemical composition testing, mechanical property testing, dimensional inspection, surface roughness testing, and non-destructive testing, ensuring that the tube dimensions and quality meet customer requirements.

applications areas

Hydraulic cylinders: excavators, loaders, cranes, forklifts, agricultural machinery
Pneumatic cylinders: factory automation equipment, robotics, and assembly lines
Automotive: shock absorbers and struts, hydraulic brake systems
Marine and offshore equipment: hydraulic systems for ships and offshore platforms
High-temperature applications: heat exchangers and chemical process equipment, furnace tubes, and process pipes

Chemical Composition

Element	Carbon	Manganese	Silicon	Phosphorus	Sulfur	Chromium	Nickel	Molybdenum	Titanium	Nitrogen
304	≤0.08	≤2.0	≤1.0	≤0.045	≤0.03	18–20	8–11	–	–	≤0.10
316	≤0.08	≤2.0	≤1.0	≤0.045	≤0.03	16–18	10–14	2–3	–	≤0.10
309	≤0.20	≤2.0	≤1.0	≤0.045	≤0.03	22–24	12–15	–	–	≤0.10
321	≤0.08	≤2.0	≤1.0	≤0.045	≤0.03	17–19	9–12	–	0.20–0.70	≤0.10

Mechanical Properties

Property	Tensile Strength	Yield Strength	Elongation	Hardness	Impact Toughness
304	≥ 515 MPa	≥ 205 MPa	≥ 40%	≤ 201 HB	Excellent
316	≥ 515 MPa	≥ 205 MPa	≥ 40%	≤ 201 HB	Excellent
309	≥ 520 MPa	≥ 210 MPa	≥ 40%	≤ 201 HB	Excellent
321	≥ 515 MPa	≥ 205 MPa	≥ 40%	≤ 201 HB	Excellent

Possible Alternative Grades

Duplex 2205 – Higher strength and excellent corrosion resistance in chloride environments.
Super Duplex 2507 – Superior corrosion resistance and mechanical strength for aggressive conditions.
Alloy 20 (UNS N08020) – Good acid and chemical resistance.
904L – Premium corrosion resistance for harsh chemical environments.