Product Overview
Our BA (Bright Annealed) stainless steel tubes are manufactured through a precision cold drawing process followed by bright annealing in a controlled hydrogen atmosphere, resulting in a mirror-bright inner and outer surface with no oxidation, no blackening, and no pickling marks. The bright annealing process ensures excellent corrosion resistance, dimensional precision, and surface quality.
With OD ranging from 5mm to 114mm and wall thickness from 0.5mm to 12mm, our BA tubes meet the strict requirements of ASTM A249, A269, A270, 3A Sanitary Standard, and JIS G3447. We support full inspection including spectrum analysis, hydrostatic testing, eddy current testing, and cleanliness verification.
Technical Specifications
| Parameter | Specification |
| Outer Diameter | 6 - 133 mm, other sizes can be customized |
| Wall Thickness | 4 - 10 mm, other sizes can be customized |
| Length | Fixed length, range fixed length or random length; standard pipe lengths include 1.5, 2.0, 3.0, 4.5, 6.0, 9.0 m, etc. |
| Material | TP304, TP316L, 310S, 2205, 2507, etc. |
| Surface Finish | Inner surface roughness < 0.4 μm, outer surface roughness < 0.6 μm |
| Standards | ASTM A249, A269, A270, 3A, JIS G3447 |
| Cleaning Method | Ultrasonic cleaning with SC2286 cleaning agent |
| Packaging | Inkjet marking + PE bag + end cap + shockproof packaging + protective protection |
Why Choose Our BA Tubes
①Mirror Bright Surface
Bright annealed in hydrogen atmosphere, inner roughness ≤0.4μm, no oxidation or pickling marks.
②Precision Dimensional
Tolerance ±0.05mm, OD 5-114mm, custom non-standard sizes and cut-to-length available.
③Full Material Range
304, 304L, 316L, 310S, 321, 2205 duplex steel to meet various corrosion requirements.
④Multi-Standard Certified
Compliant with ASTM A249/A269/A270, 3A Sanitary, JIS G3447 international standards.
⑤Rigorous Quality Control
Spectrum test, hydrostatic test, eddy current inspection, cleanliness test before shipment.
⑥Custom Processing
Special cleaning, precision chamfering & polishing, non-magnetic machining per your requirements.
Production workshop
We have 10 cold rolling production lines and 2 bright annealing furnaces, internal and external polishing one-stop service.
Quality Inspection
Every batch of BA tubes goes through a strict 4-step inspection process before leaving our factor y:
① Raw Material Test
Spectrum analysis to verify material grade & chemical composition
② Hydrostatic Test
Pressure testing to ensure no leakage under rated pressure
③ Eddy Current Test
Non-destructive inspection to detect surface & subsurface defects
④Cleanliness Test
Inner surface cleanliness & roughness verification
Packaging & Shipping
To ensure your BA tubes arrive in perfect condition, we use a multi-layer packaging method : Inkjet marking + PE bag + end cap + shockproof packaging + protective protection
Application Fields
Our BA bright annealed tubes are widely used in industries requiring high purity, corrosion resistance, and precision dimensions:
