Stainless Steel 304 Thin Wall Tubes consist of UNS S30400 austenitic stainless steel, with a typical chromium content of 18% and a nickel content of 8%, that is a light weight precision stainless steel tube with excellent corrosion resistance, formability and weldability. These tubes are characterized by a wall-to-outside diameter ratio of less than 6%, leading to lower overall weight but with good mechanical strength and dimension. They are made to meet ASTM A213, ASME SA213 and ASTM A269 specification standards and come in a variety of sizes and thicknesses, such as round, square and rectangular, to satisfy a wide range of engineering needs. They have an excellent surface finish and have good fabrication properties for precision applications. USA Piping Solution is a reputable manufacturer and supplier of high-quality Stainless Steel 304 Thin Wall Tubes with ready stock, customization sizes, competitive price and timely delivery worldwide.
Specifications of Stainless Steel 304 Thin Wall Tubes
| Parameter | Details |
|---|---|
| Material / Grade | SS 304 / SS 304L (UNS S30400 / S30403, 1.4301 / 1.4306) |
| Manufacturing Standards | ASTM A269, ASTM A213 / ASME SA213, ASTM A312, EN 10216-5, EN 10217-7, JIS G3459 |
| Type & Structure | Seamless / ERW / Welded / Cold Drawn / Precision |
| Outside Diameter (OD) | 22.00 mm to 108.00 mm |
| Wall Thickness (WT) | 0.08 mm to 3.00 mm (Ultra-thin to light gauge) |
| Precision Tolerances | OD +/-0.02 mm, WT +/-0.01 mm (Standard precision drawing) |
| Length | 100 mm to 6000 mm (Cut-to-length or continuous coils up to 500 m for small OD) |
| Surface Finish | Bright Annealed (BA), Polished (180-800 grit / Mirror Finish), Pickled (AP), Electropolished (EP) |
| Hardness / Temper | Soft / Annealed (HV 150-200), Half Hard, Full Hard |
| Manufacturing Technique | Cold Drawn, Cold Rolled, Seamless Extrusion |
| Value-Added Services | Bending, Flaring, Swaging, Precision Chamfering, Ultrasonic Cleaning |
Applications Uses of SS 304 Thin Wall Tubes
- Food Processing Equipment and Sanitary Lines
- Kitchen Equipment, Sinks, and Fixtures
- Architectural and Handrail Applications
- Heat Exchanger Tubing
- Automotive Trim Components
- General Fabrication and Light Structural Work
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Frequently Asked Questions
Why choose 304 over 316 for a thin wall tube?
304 is the more economical option and performs well for general fabrication, food equipment, and architectural use. 316 adds molybdenum for better resistance to chlorides and is the better choice for coastal, marine, or de-icing salt exposure. For everyday indoor or general atmospheric use, 304 usually does the job for less.
What wall thickness range is achievable in 304 thin wall tube?
Our standard range runs from about 0.7mm to 2.0mm wall on outside diameters from roughly 22mm to 108mm, keeping the wall-to-OD ratio under the 6% threshold that defines thin wall tube. Sizes outside this range can be quoted on request.
What certification is provided with this tube?
Tube ships with an EN 10204 3.1 mill test certificate covering heat chemistry and mechanical test results. Third-party inspection through TPI, SGS, or BV can be arranged on request.
What forms are available besides round tube?
Round, square, and rectangular forms are all available in 304 thin wall construction. Let us know the shape and application and we can confirm current stock and lead time.
Is 304 thin wall tube suitable for outdoor or coastal use?
304 holds up fine outdoors in most general atmospheric conditions, but it is not the best choice right on the coast or anywhere de-icing salt is common. For that kind of chloride exposure, the 316 version of this same thin wall range is the better fit.
Is there a minimum order quantity?
Minimum order quantities depend on size and wall thickness. Contact us with your specification for a quote.
Can this tube be supplied in custom cut lengths?
Yes. Standard random lengths and custom cut-to-length options are both available depending on the size and quantity required.