Seamless and Welded Stainless Steel Pipe 304L/316L/321
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Ultimate Corrosion Resistance
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Hygienic & Cleanable
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High & Low Temperature Use
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Detailed Description of Stainless Steel Pipe
The performance of stainless steel pipe is achieved through its alloy composition. Specifically, the chromium in the alloy forms a thin, inert, and tenacious passive film on the surface. If the film is damaged, either mechanically or chemically, it will quickly reform in the presence of oxygen, offering continuous protection. Grade 304 is the most widely used "18/8" stainless steel and provides good corrosion resistance in a wide variety of circumstances. Grade 316 is for more extreme conditions (the presence of chlorides for example) or marine environments, because it has molybdenum in the alloy, which greatly improves its resistance to pitting and crevice corrosion. Pipe can be obtained in either seamless, which has maximum integrity for pressure, or welded, which can be a less expensive option with very good quality stemming from the advancements in manufacturing techniques.
Key Parameters for Stainless Steel Pipe
Parameter |
Details |
Manufacturing Process |
Seamless (Hot/Cold Finished), Welded (ERW, TIG) |
Standards |
ASTM A312 (Seamless/Welded), ASTM A269 (Tubing), ASTM A778 (Welded), EN 10216-5 (Seamless), EN 10217-7 (Welded) |
Austenitic Grades |
304, 304L, 316, 316L, 321, 310S |
Duplex Grades |
2205 (S32205), 2507 (S32750) |
Size Range (OD) |
6mm - 630mm (1/8" - 24") |
Wall Thickness (WT) |
Schedule 5S, 10S, 40S, 80S |
Length |
Usually 6m, or as required |
Surface Finish |
No. 1 (Hot rolled, annealed, pickled), 2B (Cold rolled, bright), No. 4 (Brushed), #8 (Mirror) |
Stainless Steel Pipe Specifications
Standard / Product |
Applicable Products |
Core Features |
ASTM A312 |
Stainless Steel Pipe |
Standard Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes. |
ASTM A269 |
Stainless Steel Pipe |
Standard Specification for Seamless and Welded Austenitic Stainless Steel Tubing for General Service. |
EN 10216-5 |
Stainless Steel Pipe |
European standard for seamless steel tubes for pressure purposes, covering stainless steels. |
JIS G3459 |
Stainless Steel Pipe |
Japanese Industrial Standard for stainless steel pipes used for piping in corrosive environments. |
Main Application Areas for Stainless Steel Pipe
Its unique characteristics make it critical in refining, chemical processes, manufacturing, food production, and construction
● However, all of these facets can lead to problems if the asset owner does not properly account for the applications in which stainless steel may suffer premature failure, resulting in thousands to millions of dollars/time lost in replacement costs.
● The importance of proper application is not limited to location and temperature, but also mode of failure analysis in stainless steels, as stainless steels may be appropriate for specific applications but may not be the best fit for a particular corrosive environment.
● Design of equipment that uses stainless steel needs to be shop-fabricated to minimize issues that a fabricator may have in the design and sourcing of materials.
● This requires input from, or consideration of, corrosion specialist, fabricator, and operational teams, for design and application to avoid issues.
● Ensure the operational dates for corrosion resistance so you are not exposed to replacing equipment in the future.
Advantages of Stainless Steel Pipe
● Outstanding Corrosion Resistance: Tolerates many chemicals, acids, and environmental conditions.
● High & Low Temperature Strength: Has structural integrity at cryogenic to high-temperature applications.
● Sanitary: The smooth and non-porous surface is easy to clean and disinfect and will not support bacteria growth.
● Aesthetically Attractive: This will provide a modern, clean, professional look if exposed.
● Low Lifecycle Cost: Very durable with little to no maintenance and represents value over the long run.
● 100% Recyclable: All materials are completely sustainable.
