| Customization: | Available |
|---|---|
| Application: | Chemical Industry, Construction Industry, Oil and Gas Industry, Water Treatment Plants, Building Material |
| End Connection: | Beveled End |
|
Still deciding? Get samples of $ !
Request Sample
|
Suppliers with verified business licenses
Audited Supplier Audited by an independent third-party inspection agency
| Shapes | Round, Straight, "U" Shape, Coiled, Honed Tubes, Pan Cake Coils |
| Manufacturing Type | Seamless / ERW / Welded / Fabricated / CDW / CDS / DOM / CEW / 100% X Ray Welded |
| Delivery Condition | Annealed and Pickled (AP), Polished, Bright Annealed (BA), Cold Drawn, MF |
| Surface Finish | BA, 2B, No.4, No.1, No.3, No.8, 8K, HL, 2D, 1D, Mirror Polished, 180G, 320G, 400G Satin/ Hairline, 400G, 500G, 600G or 800G Mirror finish Tubing or Custom Finish as per customer's specification |
| Thickness Range | SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXH, SCH XXS, SCH XS |
| Standard | SUS, JIS, AISI, ASTM, GB, DIN, EN |
| Relevant Standard | ASTM A269, ASTM A778, ASTM A554, ASTM A249, ASTM A269, ASTM A270, ASTM A789, DIN 17456, DIN17457, DIN 17459, JIS G3459, JIS G3463, GOST9941, EN10216, BS3605, GB13296 |
| Value Added Services |
|
| Swg & Bwg | 10 Swg., 12 Swg., 14 Swg., 16 Swg., 18 Swg., 20 Swg. |
| END | Plain End, Beveled End, Treaded |
| Processing Service | Bending, Welding, Decoiling, Punching, Cutting, Moulding |
| Technique | Cold drawn, Cold rolled, Hot rolled, Extrusion Tube |
| Test Certificate |
|
| Packing | Ends Capped, Sleeved, Wooden Boxed |
| Port | Shanghai, China |
| Uses & Application |
|
1. Overview
ASTM A269 is a U.S. standard specification for seamless and welded austenitic stainless steel tubes intended for general corrosion-resistant and high-temperature service. Widely used in industries requiring hygiene, durability, and resistance to aggressive environments, these tubes are ideal for applications in pharmaceuticals, food processing, chemical processing, and heat exchangers.
2. Key Features
Material Grades:
Common grades: TP304, TP304L, TP316, TP316L, TP321, TP347 (low carbon variants for weldability and corrosion resistance).
Austenitic structure ensures excellent toughness and non-magnetic properties.
Manufacturing Methods:
Seamless: Produced via extrusion or rotary piercing for high-pressure applications.
Welded: Electric fusion welding (EFW) or laser welding for cost-effective solutions in low/medium pressure systems.
Corrosion Resistance:
Resists oxidation, pitting, and chloride stress corrosion (e.g., 316/L for marine environments).
Suitable for acidic, alkaline, and chloride-rich media.
Temperature Performance:
Operates reliably in temperatures ranging from -200°C to 800°C (dependent on grade and environment).
Retains strength in cryogenic or high-heat conditions (e.g., heat exchangers).
Surface Finish:
Annealed and pickled for oxide removal.
Optional electropolishing or mechanical polishing (Ra ≤ 0.8 μm) for ultra-smooth surfaces in sanitary applications.
Dimensional Precision:
Tight tolerances on outer diameter (±0.10 mm) and wall thickness (±10%).
Available in sizes from ⅛" to 12" OD, with wall thicknesses from 0.028" to 0.5".
3. Applications
Pharmaceutical & Biotechnology:
Clean-in-place (CIP) systems, bioreactor tubing, and sterile fluid transfer lines.
Compliant with FDA and USP Class VI requirements for biocompatibility.
Food & Beverage:
Milk processing, brewing, and bottling systems requiring hygienic surfaces.
Chemical & Petrochemical:
Heat exchangers, condensers, and piping for corrosive chemicals.
HVAC & Refrigeration:
Hydronic heating/cooling systems and refrigerant lines.
Medical & Semiconductor:
Ultra-high-purity (UHP) gas delivery systems and vacuum chambers.
4. Advantages Over Alternatives
Hygienic Design: Smooth, non-porous surfaces minimize bacterial growth (critical for FDA-regulated industries).
Versatility: Suitable for both corrosive and high-temperature environments.
Weldability: Low-carbon grades (e.g., 304L/316L) prevent carbide precipitation, ensuring joint integrity.
Compliance: Meets ASTM A269, ASME SB269, and ISO 2037 standards.
5. Limitations
Cost: Higher than carbon steel or lower-grade stainless steels (e.g., 430).
Not for Extreme Conditions: Limited suitability for highly reducing acids (e.g., sulfuric acid at high concentrations) without specialized alloys.
Magnetic Permeability: Austenitic grades are non-magnetic, which may be a drawback for certain applications.
6. Standards & Certifications
ASTM A269/A269M-21: Covers chemical composition, mechanical properties, and testing requirements.
ASME SB269: Approved for pressure vessel and boiler applications.
Certifications: NACE MR0175 for sour service, 3.1 Material Certificates, and PMI (Positive Material Identification) traceability.
7. Market Positioning
ASTM A269 stainless steel tubes dominate industries prioritizing cleanliness, corrosion resistance, and reliability, such as:
Life Sciences: Biopharma labs and vaccine production.
Food & Dairy: Sanitary processing equipment.
Energy: Geothermal and solar thermal systems.
Aerospace: Hydraulic and fuel lines.
){kind=link}