Baojing Steel supplies Stainless Steel Bright Annealed Tubes with a smooth, clean and bright surface for applications requiring high surface quality, dimensional precision, corrosion resistance and excellent cleanliness.
Our bright annealed tubes are available in seamless and welded constructions, covering 304 / 304L, 316 / 316L, 321, 321H, 316Ti, 310S, 2205, 2507 and other stainless steel grades.
They are widely used in food processing, pharmaceutical, semiconductor, medical equipment, instrumentation, heat exchangers, chemical processing, automotive, hydraulic and precision engineering applications.
OD 3 mm–762 mm · Customized Wall Thickness · Customized Length
Bright annealing is performed under a controlled atmosphere to minimize oxidation and scale formation, producing a smooth, bright and clean internal and external surface.
Especially suitable for applications requiring controlled:
Outside Diameter · Wall Thickness · Ovality · Straightness · Length
Bright annealed tubes can be supplied with controlled internal surface requirements, making them suitable for high-purity and sanitary applications.
Depending on dimensions and application:
Seamless · TIG Welded · Laser Welded · Precision Welded
From standard grades such as 304L / 316L to high-performance materials including 321H / 310S / 2205 / 2507.
304 / 304L
General-purpose stainless steel with excellent corrosion resistance and fabrication performance.
316 / 316L
Excellent choice for chemical, pharmaceutical, food, marine and chloride-containing environments.
321 / 321H
Suitable for elevated-temperature applications.
316Ti
Titanium-stabilized grade for elevated-temperature and corrosive service.
310S
High-temperature grade with excellent oxidation resistance.
347 / 347H
Stabilized grades suitable for high-temperature applications.
2205 / S31803 / S32205
Combines:
High Strength + Corrosion Resistance + Stress Corrosion Cracking Resistance
2507 / S32750 / S32760
Designed for severe chloride-containing environments such as:
Offshore · Marine · Desalination · Oil & Gas · Chemical Processing
Our bright annealed stainless steel tubes can be supplied in a wide range of outside diameters and wall thicknesses.
OD: 3–25.4 mm
Typical sizes:
| OD | Typical Wall Thickness |
|---|---|
| 3 mm | 0.3–0.5 mm |
| 4 mm | 0.5–1.0 mm |
| 5 mm | 0.5–1.0 mm |
| 6 mm | 0.5–1.0 mm |
| 8 mm | 0.5–1.5 mm |
| 10 mm | 0.5–1.5 mm |
| 12 mm | 0.5–2.0 mm |
| 14 mm | 0.5–2.0 mm |
| 16 mm | 0.5–2.0 mm |
| 18 mm | 0.5–2.0 mm |
| 20 mm | 0.5–2.5 mm |
| 22 mm | 0.5–2.5 mm |
| 25 mm | 0.5–3.0 mm |
| 25.4 mm | 0.5–3.0 mm |
Typical sizes:
| OD | Typical Wall Thickness |
|---|---|
| 26.7 mm | 1.0–3.0 mm |
| 28 mm | 1.0–3.0 mm |
| 30 mm | 1.0–3.0 mm |
| 32 mm | 1.0–3.5 mm |
| 33.4 mm | 1.0–3.5 mm |
| 35 mm | 1.0–3.5 mm |
| 38 mm | 1.0–4.0 mm |
| 40 mm | 1.0–4.0 mm |
| 42 mm | 1.0–4.0 mm |
| 45 mm | 1.0–4.0 mm |
| 48 mm | 1.0–4.0 mm |
| 48.3 mm | 1.0–4.5 mm |
| 50.8 mm | 1.0–4.5 mm |
| 54 mm | 1.0–4.5 mm |
| 57 mm | 1.0–5.0 mm |
| 60 mm | 1.0–5.0 mm |
| 60.3 mm | 1.5–5.0 mm |
Typical sizes:
| OD | Typical Wall Thickness |
|---|---|
| 63.5 mm | 1.5–5.0 mm |
| 70 mm | 1.5–5.0 mm |
| 73 mm | 1.5–6.0 mm |
| 76.1 mm | 1.5–6.0 mm |
| 76.2 mm | 1.5–6.0 mm |
| 80 mm | 2.0–6.0 mm |
| 88.9 mm | 2.0–8.0 mm |
| 89 mm | 2.0–8.0 mm |
| 101.6 mm | 2.0–8.0 mm |
| 108 mm | 2.0–8.0 mm |
| 114.3 mm | 2.0–10.0 mm |
| 127 mm | 2.5–10.0 mm |
| 133 mm | 2.5–10.0 mm |
| 139.7 mm | 2.5–10.0 mm |
| 141.3 mm | 2.5–10.0 mm |
| 152.4 mm | 3.0–12.0 mm |
| 159 mm | 3.0–12.0 mm |
| 168.3 mm | 3.0–12.0 mm |
| 219.1 mm | 3.0–16.0 mm |
For industrial applications, larger welded tubes/pipes can be supplied in sizes such as:
OD 219.1–762 mm
with customized:
Wall Thickness · Length · Surface · Weld Quality · Inspection Requirements
For large OD + thin wall + bright annealed surface, welded construction is generally more practical. Exact availability should be confirmed according to the required OD/WT combination.
For industrial procurement, the most frequently requested specifications include:
6 × 1 mm
8 × 1 mm
10 × 1 mm
12 × 1 mm
16 × 1 mm
19 × 1.5 mm
25 × 1.5 mm
32 × 1.5 mm
38 × 2 mm
48 × 2 mm
48 × 3 mm
60 × 3 mm
76 × 3 mm
89 × 3 mm
114 × 3 mm
114 × 4 mm
168 × 4 mm
219 × 6 mm
1/8" · 1/4" · 3/8" · 1/2" · 3/4" · 1" · 1-1/4" · 1-1/2" · 2" · 2-1/2" · 3" · 4" · 5" · 6" · 8"
Common examples:
1/2" × SCH5S / SCH10S
1" × SCH10S
2" × SCH10S / SCH40S
3" × SCH10S / SCH40S
4" × SCH10S / SCH40S
6" × SCH10S / SCH40S
8" × SCH10S / SCH40S
| Type | Main Features | Typical Applications |
|---|---|---|
| Seamless BA Tube | No longitudinal weld, high pressure capability | Instrumentation, hydraulic, critical service |
| Welded BA Tube | Excellent dimensional consistency and surface | Food, pharmaceutical, process piping |
| TIG Welded BA Tube | Controlled weld quality | Sanitary & precision applications |
| Laser Welded BA Tube | High precision, narrow HAZ | Precision & high-quality applications |
The BA (Bright Annealed) finish provides a smooth, bright appearance and controlled surface condition.
Compared with conventional annealed and pickled surfaces, BA tubes offer:
Brighter Appearance
Lower Surface Oxidation
Cleaner Surface
Better Surface Smoothness
Excellent Appearance for Precision Applications
Typical surface requirements can include:
BA · Bright Annealed · Mirror Polished · Electropolished · Customized
| Application | Recommended Grades | Key Reason |
|---|---|---|
| Food Processing | 304 / 304L | Clean surface & corrosion resistance |
| Pharmaceutical | 316L | High cleanliness & corrosion resistance |
| Medical Equipment | 316L | Corrosion resistance & surface quality |
| Semiconductor | 316L | High-purity applications |
| Instrumentation | 304L / 316L | Precision & corrosion resistance |
| Hydraulic Systems | 304 / 316L | Dimensional stability |
| Heat Exchangers | 304L / 316L / 321 | Heat & corrosion resistance |
| Chemical Processing | 316L / 317L / 904L | Chemical corrosion resistance |
| Marine | 316L / 2205 / 2507 | Chloride resistance |
| Oil & Gas | 316L / 2205 / 2507 | Strength & corrosion resistance |
| Automotive | 304 / 409 / 439 | Corrosion & heat resistance |
| Architectural / Decorative | 304 / 316L | Bright appearance |
Bright annealed tubes are particularly suitable for applications where surface quality and dimensional accuracy are critical.
OD · Wall Thickness · Length · Ovality · Straightness
Brightness · Smoothness · Scratches · Pitting · Cracks · Surface Defects
PMI – Positive Material Identification
UT · Eddy Current Testing · Hydrostatic Testing
Tensile Strength · Yield Strength · Elongation · Hardness
Intergranular Corrosion Testing (IGC) when required.
Depending on material, dimensions and application:
ASTM A213 – Boiler, Superheater and Heat Exchanger Tubes
ASTM A269 – Austenitic Stainless Steel Tubing for General Service
ASTM A270 – Sanitary Stainless Steel Tubing
ASTM A312 – Austenitic Stainless Steel Pipe
ASTM A789 – Duplex Stainless Steel Tubing
ASTM A269 / A270 / A213 / A789 / A312
Applicable standards can also include:
ASME · EN · JIS · GB/T
Sanitary piping, food processing equipment, beverage processing and dairy equipment.
Clean process piping, pharmaceutical equipment and high-cleanliness systems.
Medical equipment, precision components and clean fluid systems.
High-purity gas and fluid delivery systems where surface cleanliness and dimensional precision are critical.
Process piping, instrumentation and chemical equipment.
Heat transfer systems, condensers and cooling equipment.
Precision hydraulic tubing, instrumentation lines and control systems.
Typical export packaging:
Plastic Caps → Protective Film → Waterproof Protection → Bundling → Steel Strapping → Wooden / Steel Supports
For high-cleanliness applications, additional internal and external protection can be provided according to customer requirements.
✔ Bright & Clean Surface
Suitable for applications where appearance and surface quality matter.
✔ Precision Dimensions
Controlled OD, wall thickness, ovality and straightness.
✔ Seamless & Welded Options
Flexible construction according to application and specification.
✔ 3–762 mm OD Capability
From precision small-diameter tubes to large industrial pipes.
✔ 304L / 316L / 321 / 310S / 2205 / 2507 & More
✔ Comprehensive Testing
PMI · UT · ET · Hydrostatic · Mechanical · IGC
✔ International Standards
ASTM · ASME · EN · JIS · GB/T
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