316L Bright Annealed Tube / ASTM A269 BA Tubing
316L Bright Annealed Tubes are produced using a specialized heat treatment in a controlled, oxygen-free hydrogen atmosphere that maintains a mirror-like finish, smooth internal surface, and high dimensional accuracy. Metinox Overseas is a reputable manufacturer, supplier, and exporter providing high-quality ASTM A269 BA Tubing manufactured to fit high-demand precision and hygienic applications. 316L is a low-carbon austenitic alloy that offers superior resistance to pitting and crevice corrosion, ensuring stability at varying temperatures. These tubes are highly formable and are used in complex instrumentation systems without involving high costs, providing a long service life and constant performance in ultra-pure environments.
The Seamless BA 316L tubes are mostly used in the pharmaceutical, biotechnology, food and beverage, semiconductor, and oil and gas instrumentation industries. The bright annealing process ensures a smooth internal surface, which enables a free flow of fluids and reduces the possibility of bacterial contamination, which is vital to hygienic and precision-driven processes. These tubes retain high strength and excellent ductility, making them ideal for bending and flaring. They provide stable resistance against oxidation and harsh corrosive media, guaranteeing reliable functioning in high-purity gas and liquid delivery systems. All tubes are fabricated and evaluated according to international standards to confirm mechanical properties, dimensions, and surface roughness (Ra).
Table of Contents
- ASTM A269 316L Bright Annealed Tube Material Specification
- ASME SA213 SS 316L BA Tube Chemical Composition
- SS 316L Bright Annealed Tubing Mechanical Properties
- Size Chart of Bright Annealed Stainless Steel Tubes
- Difference Between BA Finish and AP Finish Tubes
- Different Types of Bright Annealed Tubes
- Surface Finish and Roughness (Ra) Levels
- Tolerance Level of SS 316L BA Tubing
- Material Testing & Quality Control
- Advantages of Bright Annealed Tubes
- Applications of 316L BA Tubing
- Why Choose Our Bright Annealed Tubes
- Export Destinations - USA, Europe, Middle East, LATAM
- Delivery Time & CIF Pricing by Country
- Frequently Asked Questions (FAQ)
- Related Stainless Steel Products
- People Also Search For
ASTM A269 316L Bright Annealed Tube Material Specification
Metinox Overseas supplies ASTM A269 316L BA Tubes that adhere to strict international standards for precision and hygienic applications.
| Feature | Details |
| Specifications | ASTM A269, ASTM A213, ASTM A249, EN 10216-5, DIN 17458 |
| Dimensions | ASTM, ASME, and DIN |
| Size Range (OD) | 6.00 mm to 114.3 mm (1/4" to 4") |
| Wall Thickness | 0.5 mm to 6.0 mm |
| Schedules | Standard Gauge (BWG) and Metric Thickness |
| Type | Seamless / Welded / Cold Drawn / Coiled Tubing |
| Form | Round, Straight Lengths, Coils |
| End Finish | Plain End, Square Cut, Deburred |
| Surface Finish | Bright Annealed (BA) - Mirror Finish |
ASME SA213 SS 316L BA Tube Chemical Composition
The chemical composition of SS 316L ensures excellent corrosion resistance and stability in high-purity environments.
| Grade | C | Ni | Si | Mn | P | Cr | Mo | S |
| SS 316L | 0.030 Max | 10.0-14.0 | 0.75 Max | 2.0 Max | 0.045 Max | 16.0-18.0 | 2.0-3.0 | 0.030 Max |
SS 316L Bright Annealed Tubing Mechanical Properties
The mechanical properties of 316L BA tubes ensure high strength and ductility for precision applications.
| Grade | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness (Rockwell B) |
| SS 316L BA | 485 Min | 170 Min | 35 Min | 90 HRB Max |
Size Chart of Bright Annealed Stainless Steel Tubes
We maintain a comprehensive inventory of BA tubes in metric and imperial sizes for immediate dispatch.
| OD (mm) | OD (Inch) | Wall Thickness (mm) | Application |
| 6.00 | 1/4" | 0.5 - 1.0 | Instrumentation, Gas Lines |
| 9.52 | 3/8" | 0.7 - 1.2 | Process Control, Sampling |
| 12.70 | 1/2" | 0.9 - 1.5 | Pharma, Food Processing |
| 19.05 | 3/4" | 1.0 - 2.0 | Semiconductor, Biotech |
| 25.40 | 1" | 1.2 - 2.5 | Clean Utilities, WFI Lines |
| 38.10 | 1-1/2" | 1.5 - 3.0 | Dairy, Beverage Processing |
| 50.80 | 2" | 1.5 - 4.0 | Chemical Transfer, CIP Systems |
Difference Between BA Finish and AP Finish Tubes
Understanding the differences between BA and AP finishes helps in selecting the right tube for your application.
| Parameter | BA (Bright Annealed) | AP (Annealed & Pickled) |
| Surface Appearance | Mirror-like, Reflective | Dull, Matte Gray |
| Annealing Atmosphere | Hydrogen (Oxygen-free) | Open Air / Controlled |
| Post-Processing | No Pickling Required | Acid Pickling Required |
| Surface Roughness (Ra) | 0.4 - 0.6 -m | 1.0 - 1.5 -m |
| Cleanliness | Higher Purity | Standard Industrial |
| Ideal Applications | Pharma, Semiconductor, Food | General Industrial Piping |
| Cost | Higher | Lower |
Different Types of Bright Annealed Tubes
Metinox Overseas offers a complete range of BA tubes to meet diverse industrial requirements.
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Seamless BA Tubes
Manufactured without any weld seam, offering superior strength and uniformity. Ideal for high-pressure instrumentation and critical process applications where maximum purity is required.
Welded BA Tubes
Cost-effective alternative with TIG welded seam and full bright annealing. The weld is ground smooth internally to ensure consistent flow characteristics. Suitable for general instrumentation and process lines.
According to Form & Delivery
Straight Length BA Tubes
Available in standard lengths of 6 meters or custom cut lengths. Preferred for fixed installations in control panels, skid assemblies, and process equipment.
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Coiled BA Tubes
Supplied in continuous coil lengths up to 1000+ meters. Ideal for long run installations, heat exchangers, and applications requiring minimal joints and connections.
Surface Finish and Roughness (Ra) Levels
Surface roughness is critical for hygienic applications. Below is a comparison of different finish types.
| Finish Type | ID Roughness (Ra) -m | OD Roughness (Ra) -m | Appearance |
| BA (Bright Annealed) | 0.4 - 0.6 | 0.8 | Mirror-like / Reflective |
| AP (Annealed & Pickled) | 1.0 - 1.5 | 1.0 | Dull / Matte Gray |
| EP (Electropolished) | 0.13 - 0.25 | 0.5 | Ultra-smooth / High Luster |
Tolerance Level of SS 316L BA Tubing
Precision tolerances ensure compatibility with high-quality compression fittings and connectors.
| OD Range (mm) | OD Tolerance | Wall Thickness Tolerance | Length Tolerance |
| 6.00 - 12.70 | -0.05 mm | -10% | +0 / -3 mm |
| 12.70 - 25.40 | -0.08 mm | -10% | +0 / -3 mm |
| 25.40 - 50.80 | -0.10 mm | -10% | +0 / -5 mm |
| 50.80 - 114.30 | -0.15 mm | -12.5% | +0 / -5 mm |
Material Testing & Quality Control
At Metinox Overseas, we make use of strict and accurate quality tests in all 316L Bright Annealed Tubes to achieve uniform performance and safety.
- Positive Material Identification (PMI): To verify Chromium, Nickel, and Molybdenum levels.
- Eddy Current Testing: Non-destructive testing to detect any surface or internal cracks.
- Roughness Measurement: Digital profilometer test to ensure Ra < 0.5-m for high-purity use.
- Hydrostatic Test: To ensure the tubing can withstand high-pressure instrumentation loads.
- Flaring & Flattening: To confirm the ductility and formability of the BA tube.
- Dimensional Inspection: Verification of OD, ID, wall thickness, and ovality using precision gauges.
Advantages of 316L Bright Annealed Tube
The benefits of choosing BA tubes over conventional annealed and pickled tubes include:
- Superior Hygiene: Ultra-smooth ID prevents particle entrapment and bacterial growth.
- Corrosion Resistance: 316L grade offers maximum protection against chemical attack.
- Aesthetic Appeal: Reflective surface finish requires no additional polishing.
- Tight Tolerances: Precision cold drawing ensures compatibility with high-quality compression fittings.
- Excellent Formability: High ductility allows complex bending and flaring without cracking.
- Clean Internal Surface: Reduces contamination risk in high-purity fluid systems.
Applications of 316L BA Tubing
316L Bright Annealed Tubes are used across industries demanding precision, purity, and hygiene.
Pharmaceutical Industry
Sterile liquid and gas transfer lines, WFI (Water for Injection) systems, clean steam piping, and API manufacturing where contamination-free flow is critical.
Instrumentation Tubing
Used in control panels for oil & gas and power plants, process analyzers, pressure transmitters, and sampling systems requiring high accuracy.
Semiconductor Industry
High-purity gas delivery systems, ultra-clean chemical distribution, and vacuum systems where particulate contamination must be eliminated.
Food & Dairy
Processing equipment where cleanliness is mandatory, including milk processing, beverage production, and CIP/SIP compatible transfer lines.
Laboratory & Chromatography
Gas chromatography systems, analytical instruments, and laboratory equipment where ultra-clean internal surfaces are essential for accurate results.
Biotechnology
Fermentation systems, bioreactor connections, and sterile transfer lines for cell culture and bioprocessing applications requiring aseptic conditions.
Why Choose Metinox Overseas for Bright Annealed Tubes?
Metinox Overseas stands out as a preferred supplier due to:
- Certified Quality: Manufactured as per ASTM A269/A213 with full MTC 3.1 certification.
- Precision OD: Guaranteed accuracy for use with Swagelok and Parker type fittings.
- Ready Stock: Extensive range of metric and imperial sizes available for immediate export.
- Global Reach: Exporting to 50+ countries worldwide.
- Custom Solutions: Tailored sizes, lengths, and finishes to meet specific requirements.
- Competitive Pricing: Direct mill sourcing ensures best-in-class pricing.
Looking for High-Quality Bright Annealed Tubes?
Choose Metinox Overseas - Your Reliable 316L BA Tube Manufacturer & Exporter.
Let us support your projects with quality, precision, and performance.
Export Destinations - USA, Europe, Middle East, LATAM
We are a major exporter of Bright Annealed tubes to high-consumption regions:
- Middle East: UAE, Saudi Arabia (Riyadh, Jubail), Qatar, Oman, Kuwait.
- Americas (LATAM & USA): USA (Houston, Texas), Brazil, Mexico, Argentina, Canada.
- Europe: Germany, Italy, UK, Netherlands, Belgium.
- Asia & Africa: Singapore, Malaysia, South Africa, Nigeria, Egypt.
316L BA Tube Delivery Time & CIF Pricing by Country
Metinox Overseas has created a powerful international logistics system that has helped it deliver ASTM A269 BA Tubes to customers in a timely manner across the world. Our INCOTERs are flexible and can be tailor-made to meet your purchasing needs such as CIF (Cost, Insurance and Freight), FOB (Free on Board), CFR (Cost and Freight) and DDP (Delivered Duty Paid).
| Destination Region | Major Ports / Cities | Estimated Delivery Time | Typical CIF Terms |
| Middle East (GCC) | Dubai (Jebel Ali), Dammam, Doha, Muscat, Kuwait | 7 - 10 Days | CIF Dubai / CIF Dammam / CIF Doha |
| Europe | Rotterdam, Hamburg, Antwerp, Southampton, Genoa | 20 - 25 Days | CIF Rotterdam / CIF Hamburg |
| USA & Canada | Houston, New York, Los Angeles, Long Beach, Vancouver | 25 - 30 Days | CIF Houston / CIF New York / CIF LA |
| Latin America (LATAM) | Santos (Brazil), Veracruz (Mexico), Buenos Aires, Callao | 30 - 35 Days | CIF Santos / CIF Veracruz |
| Southeast Asia | Singapore, Port Klang, Bangkok, Manila, Jakarta | 10 - 15 Days | CIF Singapore / CIF Port Klang |
| Africa | Lagos, Durban, Mombasa, Dar es Salaam, Alexandria | 15 - 20 Days | CIF Lagos / CIF Durban |
Note: Delivery times are approximate and subject to shipping line schedules, port congestion, and customs clearance procedures. For urgent requirements, we offer air freight services with delivery within 5-7 days to major international airports. Contact our export team for customized logistics solutions and current CIF pricing for 316L Bright Annealed Tubes.
FAQs About Bright Annealed Tubes
It is a heat treatment process in a hydrogen-rich furnace that prevents oxidation, resulting in a bright, reflective surface finish. The controlled atmosphere eliminates the need for post-annealing pickling.
Yes, ASTM A269 is the standard for general service stainless steel tubing, focusing on corrosion resistance and cleanliness. It covers seamless and welded austenitic stainless steel tubing for general corrosion-resisting and low or high-temperature service.
Yes, the ultra-clean internal surface makes 316L BA tubes ideal for laboratory and chromatography applications. The smooth surface prevents sample contamination and ensures accurate analytical results.
316L BA tubes with precision OD tolerances are compatible with Swagelok, Parker, Gyrolok, and other high-quality compression fittings. The tight tolerances ensure leak-free connections in instrumentation systems.
BA tubes typically have an internal surface roughness (Ra) of 0.4 to 0.6 -m, which is significantly smoother than AP (Annealed & Pickled) tubes that have Ra of 1.0 to 1.5 -m. For ultra-high purity applications, electropolished tubes can achieve Ra below 0.25 -m.
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