ASTM A269 TP316L BA Stainless Steel Welded Tube For Precision Fluid & Gas Transport
ASTM A269 TP316L BA Stainless Steel Welded Tube For Precision Fluid & Gas Transport
ASTM A269 TP316L Bright Annealed Stainless Steel Welded Tube is a precision welded stainless steel tube manufactured per ASTM A269 standard, processed with strict bright annealing treatment, integrating excellent corrosion resistance, stable mechanical performance, ultra-clean surface and precise dimensional accuracy. Different from ordinary annealed tubes, BA welded tubes have uniform grain structure, residual stress elimination, no surface black oxide layer, and superior surface finish, making them ideal for high-purity fluid, gas, and precision instrument piping systems. YUHONG GROUP has 35 years' experience to manufacture stainless steel tubes with high quality. Our tubes have been exported to many countries, like Thailand, Malaysia, U.A.E, Saudi Arabia, Korea, Mexico, Indonesia, Colombia, and so on. These stainless steel tubes can be seamless or welded, straight or coiled. They're widely used in precision instruments, industrial fluid transport, auto parts, etc..
Chemical Composition(%):
| Element | Content Range (%) |
| Carbon (C) | ≤0.03 |
| Silicon (Si) | ≤1.00 |
| Manganese (Mn) | ≤2.00 |
| Phosphorus (P) | ≤0.045 |
| Sulfur (S) | ≤0.030 |
| Chromium (Cr) | 16.00 – 18.00 |
| Nickel (Ni) | 10.00 – 14.00 |
| Molybdenum (Mo) | 2.00 – 3.00 |
| Iron (Fe) | Balance |
Mechanical Properties:
| Tensile Strength | ≥485 MPa |
| Yield Strength (0.2% Offset) | ≥170 MPa |
| Elongation (50mm Gauge Length) | ≥35% |
| Max Hardness (HRB) | ≤90 HRB |
Different Surface Finishes:
- Bright Annealed (BA) Finish
- Pickled (AP)
- Mechanically Polished (MP/180G/240G)
Key Features of ASTM A269 TP316L Bright Annealed Welded Tube:
- Superior Corrosion Resistance
- Ultra-Clean Bright Surface
- Stable Mechanical & Structural Performance
- Excellent Weldability & Processability
- High Dimensional Accuracy & Sealing Performance
- High & Low Temperature Resistance
- Excellent Formability
- Cryogenic Toughness
Main Applications:
- Instrumentation & Control Piping: Precision pressure gauge tubes, signal transmission tubes, hydraulic and pneumatic instrument piping for petrochemical, power and automation industries.
- High-Purity Gas Systems: Semiconductor, electronic industry ultra-pure nitrogen, oxygen, argon and special gas transmission pipelines, no medium contamination.
- Pharmaceutical & Food Processing: Sanitary fluid transmission pipelines, purification system piping, compliant with sanitary grade requirements, easy to clean and sterilize.
- Chemical & Marine Engineering: Chloride-containing solution, acid-base corrosive medium pipelines, offshore equipment piping, salt spray corrosion resistant systems.
- Energy & Power Industry: Thermal power, nuclear power auxiliary precision piping, high and low temperature circulating fluid pipelines.
- Laboratory & Scientific Research: Ultra-clean experimental gas and liquid delivery pipelines, precision analytical instrument supporting tubes.
- Vacuum & High-Pressure Systems: Vacuum equipment piping, high-pressure hydraulic pipelines requiring zero leakage and high stability.
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