Stainless Steel Seamless Tube TP304L ASTM A269 for Industrial
Product Name: Stainless Steel Seamless Tube
Material: Stainless Steel TP304L
Standard: ASTM A269
Process: Seamless, Cold Drawn/Rolled
Surface Finish: Pickled, Bright Annealed, Polished available
Application: General Industrial Piping, Structural, Fluid Transfer
Size: 1/4" to 2" available
Stock Status: Common sizes in stock
Seamless vs. Welded Tube: How to Choose
| Comparison Dimension | Seamless Tube | Welded Tube |
| Manufacturing Process | Made from a solid tube billet, perforated and rolled; has no weld
seam. | Formed from a coiled steel strip and joined by a longitudinal weld
seam. |
| Key Advantage | Complete and uniform structure, resulting in extremely high
pressure capacity and reliability. | More precise wall thickness tolerance, high production efficiency,
and lower cost. |
| Main Weakness | More complex production process results in a higher cost and
slightly larger wall thickness tolerance. | The weld seam area is a potential weak point; pressure capacity and
corrosion resistance are lower than seamless tubes of the same
specification. |
| Suitable Applications | High-pressure, high-temperature, critical process fluid transfer,
such as in boilers, heat exchangers, and hydraulic systems. | Low-to-medium pressure fluid transfer, structural support, and
decorative uses, such as in water supply/drainage, handrails, and
exhaust pipes. |
Globally Universal: Grade Equivalents for TP304L
| Standard System | Equivalent Grade Designation |
| ASTM / AISI (Common Name) | TP304L |
| UNS (Unified Numbering System) | S30403 |
| EN (European Standard Number) | 1.4307 |
| JIS (Japanese Industrial Standards) | SUS 304L |
Manufacturing Process Flow
SMLSCO Seamless Tube utilizes rigorous cold working techniques to
ensure its superior performance. Production begins with a
high-quality perforated tube billet, which then undergoes multiple
cold rolling or cold drawing steps. This process reduces the tube's
outer diameter and wall thickness while also refining the internal
grain structure and improving surface finish. After forming, all
tubes undergo solution annealing, pickling, passivation, and
straightening to ensure they meet the required mechanical
properties and corrosion resistance.
General Industrial Applications
TP304L Seamless Tube is a standard stainless steel grade used in
nearly all general industrial applications. It is widely used in
piping systems that transport liquids and gases, such as in
chemical plants, food processing plants, and various manufacturing
facilities. It is also commonly used for structural components,
equipment frames, handrails, and automotive and transportation
equipment parts requiring corrosion resistance and formability. It
is a versatile, cost-effective, and reliable industrial material.
SMLSCO Advantages
SMLSCO is committed to addressing the pain point of delivery delays
in the tube industry. We maintain over 100 tons of seamless tube in
stock year-round, ensuring quick response times for common sizes.
As a professional supplier with 19 years of experience, we utilize
seamless processes to ensure superior product reliability and offer
competitive pricing. Our professional team will quickly respond to
all your inquiries within 15 hours and provide you with full
support from selection to delivery.
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