HAOMEI Aluminum CO., LTD.
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Austenitic Stainless Steel Seamless Pipe
Austenitic stainless steel seamless pipe is widely used in industries that require excellent corrosion resistance, high temperature performance, hygienic surface quality, and reliable pressure-bearing capability. Manufactured without a welded seam, this type of stainless steel pipe provides uniform structure, dependable mechanical properties, and strong resistance to corrosion in a wide range of service environments.
What Is Austenitic Stainless Steel Seamless Pipe?
Austenitic stainless steel is the most commonly used family of stainless steels. It is known for its excellent formability, weldability, toughness, and resistance to oxidation and corrosion. Seamless pipes made from austenitic stainless steel are suitable for critical piping systems in chemical processing, food processing, marine engineering, energy, pharmaceutical production, heat exchangers, water treatment, and general industrial service.
We supply austenitic stainless steel seamless pipe in a wide range of grades such as 304, 304L, 316, 316L, 321, 310S, 347H, and other special stainless steel materials depending on customer requirements. The pipes can be supplied according to international standards including ASTM, ASME, EN, DIN, and JIS standards.
Austenitic stainless steel seamless pipe offers strong resistance to general corrosion in many industrial and atmospheric environments. Grades containing molybdenum, such as 316 and 316L, provide improved resistance to pitting and crevice corrosion in chloride-containing conditions.
Because the pipe is manufactured without a welded seam, it offers a more uniform structure and dependable performance in pressure applications. This makes it suitable for systems where integrity and reliability are important.
Austenitic stainless steels maintain good toughness and mechanical performance over a wide temperature range. Certain grades such as 321, 347H, and 310S are suitable for elevated temperature service.
Austenitic stainless steel can be easily fabricated, welded, and formed, making it suitable for a wide range of industrial piping systems.
Specification of Austenitic Stainless Steel Seamless Pipe:
Product Name | Austenitic Stainless Steel Seamless Pipe |
Product Type | Seamless Pipe / Seamless Tube |
Material Grades | 304, 304L, 316, 316L, 321, 310S, 347H |
Manufacturing Process | Hot Finished / Cold Drawn / Cold Rolled |
Standards | ASTM A312, ASTM A213, ASTM A269, ASME SA312, EN 10216-5 |
Outside Diameter | 6 mm – 630 mm |
Wall Thickness | 0.5 mm – 40 mm |
Length | Random Length / Fixed Length / Custom Length |
Size Type | Metric Size / Inch Size |
Pipe Schedule | SCH 5, SCH 10, SCH 40, SCH 80, SCH 160, XXS |
Surface Finish | Annealed & Pickled (AP), Bright Annealed (BA), Polished |
End Finish | Plain End / Beveled End / Threaded End (if required) |
Delivery Condition | Solution Annealed / Pickled / Polished |
Tolerance | According to ASTM / EN standards |
Testing | Chemical Analysis, Mechanical Test, Hydrostatic Test, UT, ET, PMI, Dimension Inspection, Surface Inspection |
Certificates | MTC EN 10204 3.1 / 3.2 / PMI Report / Third-Party Inspection Report |
Applications | Chemical Processing, Marine, Heat Exchanger, Boiler, Food Processing, Pharmaceutical, Water Treatment |
Packing | Bundles, Wooden Cases, End Caps, Waterproof Packing, Seaworthy Export Packing |
Origin | China |
MOQ | Depending on size and grade |
Supply Ability | Custom production and stock supply available |
Grades of Austenitic Stainless Steel Seamless Pipe:
We can supply austenitic stainless steel seamless pipe in the following common grades:
304 Seamless Pipe
304L Seamless Pipe
316 Seamless Pipe
316L Seamless Pipe
321 Seamless Pipe
310S Seamless Pipe
347H Seamless Pipe
Other grades may also be available based on project requirements.
The chemical composition and mechanical properties depend on the selected grade and applicable standard. For example:
304 / 304L: good general corrosion resistance and excellent formability
316 / 316L: improved corrosion resistance due to molybdenum content
321: stabilized grade suitable for elevated temperature applications
310S: designed for high temperature oxidation resistance
347H: suitable for high-temperature pressure service
Detailed material data sheets can be provided upon request.
Common Standards of Austenitic Stainless Steel Seamless Pipe:
ASTM A312 / ASME SA312
ASTM A213 / ASME SA213
ASTM A269
EN 10216-5
DIN / JIS standards upon request
Process of Austenitic Stainless Steel Seamless Pipe:
Our austenitic stainless steel seamless pipes are manufactured through controlled production processes to ensure dimensional accuracy, surface quality, and consistent material performance.
Typical manufacturing and processing steps may include:
Raw material inspection
Piercing and hot extrusion or hot rolling
Cold drawing or cold rolling where required
Heat treatment / solution annealing
Straightening
Pickling and passivation
Dimensional inspection
Nondestructive testing
Marking and packaging
Inspections & Tests of Austenitic Stainless Steel Seamless Pipe:
To ensure product quality and compliance, austenitic stainless steel seamless pipe can be supplied with the following inspections and tests:
Chemical composition analysis
Mechanical property testing
Hydrostatic test
Eddy current test
Ultrasonic test
PMI (Positive Material Identification)
Dimensional inspection
Surface inspection
Intergranular corrosion test upon request
Third-party inspection upon request
What We Offer?
Wide range of austenitic grades available
International standards supported
Stable quality control and traceability
Full inspection and testing options
Third-party inspection available
Export packing for global shipment
Technical support for material selection
Fast quotation and responsive service
Application of Austenitic Stainless Steel Seamless Pipe:
Austenitic stainless steel seamless pipe is widely used in many industries, including:
Used for corrosive fluid transportation, process piping, and plant systems.
Suitable for marine piping systems, seawater-related service, and offshore structures when proper grades are selected.
Used in production lines where corrosion resistance and hygienic surfaces are required.
Applied in systems requiring cleanability and reliable material performance.
Widely used in tubing and piping systems exposed to heat and pressure.
Used in water conveying and process systems requiring corrosion resistance.
Suitable for high-temperature and pressure piping systems depending on the selected grade.
Package of Austenitic Stainless Steel Seamless Pipe:
Our austenitic stainless steel seamless pipes are packed in seaworthy export packaging to protect the products during storage and transportation.
Typical packing methods include:
Bundles with steel straps
Wooden cases or wooden boxes
Plastic caps on both ends
Waterproof wrapping
Clear marking and heat number traceability
Customized packing, marking, and labeling are available according to customer requirements.
How To Get Quote?
To receive an accurate quotation, please provide the following information:
Material grade
Standard specification
Outer diameter and wall thickness
Length requirement
Quantity
Application
Surface finish
End type
Certificate requirements
Destination port or delivery address
FAQ:
Austenitic stainless steel seamless pipe is a stainless steel pipe manufactured without a welded seam and made from austenitic grades such as 304, 304L, 316, 316L, 321, 310S, and 347H. It is widely used for applications requiring corrosion resistance, good toughness, and reliable performance under pressure.
Common grades include 304, 304L, 316, 316L, 321, 310S, and 347H. Different grades are selected according to the required corrosion resistance, temperature resistance, mechanical strength, and application environment.
304 stainless steel seamless pipe is suitable for general industrial applications and offers good corrosion resistance. 316 stainless steel seamless pipe contains molybdenum, which gives it better resistance to pitting and crevice corrosion, especially in chloride-containing environments.
Both 304L and 316L are low-carbon stainless steel grades with improved weldability. 316L provides better corrosion resistance than 304L, especially in aggressive chemical or marine-related environments.
Austenitic stainless steel seamless pipe can be supplied according to standards such as ASTM A312, ASTM A213, ASTM A269, ASME SA312, and EN 10216-5, depending on the product type and application.
Yes. Some grades such as 321, 310S, and 347H are commonly used for elevated temperature service. The correct grade should be selected according to the actual working temperature and service conditions.
Yes. Austenitic stainless steel seamless pipe can be used in marine applications when the proper material grade is selected. For example, 316L is commonly used in general marine environments, while more severe chloride conditions may require duplex or super duplex stainless steel.
A wide range of outer diameters, wall thicknesses, and lengths can be supplied depending on the grade, standard, and production requirements. Customized sizes may also be available upon request.
Common surface finishes include annealed and pickled (AP), bright annealed (BA), and polished finishes. The available finish depends on the size, standard, and customer requirements.
Available inspections and tests may include chemical composition analysis, mechanical property testing, hydrostatic testing, eddy current testing, ultrasonic testing, PMI, dimensional inspection, and surface inspection. Additional testing can be arranged upon request.
We can provide Mill Test Certificate (MTC), EN 10204 3.1 certificate, EN 10204 3.2 certificate, PMI reports, inspection reports, and other required documentation depending on the order.
Yes. Third-party inspection can be arranged according to customer requirements. Inspection companies such as SGS, BV, DNV, may be used.
Austenitic stainless steel seamless pipe is widely used in chemical processing, petrochemical plants, marine engineering, food processing, pharmaceutical systems, heat exchangers, boilers, water treatment, and power generation.
The pipe is usually packed in seaworthy export packaging such as bundles, wooden cases, waterproof wrapping, end caps, and clear marking to ensure safe transportation and product traceability.
