Ultra-Low Inner Wall Roughness Stainless Steel BA Tube — ASTM A269
TP316L SeamlessYUHAO presents its premium ASTM A269 TP316L seamless bright annealed (BA) stainless steel tube, engineered specifically for applications demanding ultra-low
inner wall roughness. Available in outer diameters from 6mm to
630mm with customizable wall thicknesses, this tube delivers
exceptional surface quality through a rigorously controlled
hydrogen atmosphere bright annealing process. ▶ Key Product Advantages — Ultra-Low Inner Wall Roughness- Inner wall roughness Ra ≤ 0.25μm (standard), 0.2μm achievable upon
request
- Multi-pass cold drawing with proprietary mandrel technology for
ultra-smooth ID finish
- Surface profilometer verified on every production batch with full
traceability reports
- Minimized flow resistance and particle entrapment for high-purity
fluid and gas systems
▶ Technical Specifications| Parameter | Specification |
|---|
| Material | TP316L (also available: TP304, TP304L, TP316, TP321, Duplex) | | Outer Diameter | 6mm - 630mm, Custom outer diameter available | | Wall Thickness | 0.5mm - 10mm, Custom wall thickness available | | Length | 6m or as per customer requirement | | Standard | ASTM/ASME A/SA269, A/SA213, DIN 17458/17457, EN 10216-5/10217-7 | | Surface Finish | Ultra-Low Ra Bright Annealed (BA), Ra ≤ 0.25μm | | Manufacturing Process | Multi-Pass Cold Drawn, Bright Annealed in Hydrogen Atmosphere | | NDT | Eddy Current Test, Hydrostatic Test, Ultrasonic Test | | Application | High-Purity Gas Distribution, Semiconductor Fab, Laboratory
Systems, Medical Devices, Precision Fluid Transport | | Packaging | Tube ends capped with plastic protectors, individually wrapped in
VCI paper, packed in reinforced plywood cases | | Certification | ISO 9001, PED, CE, TUV, AD2000 |
▶ Why Choose YUHAO BA TubesWith a modern production facility in Wenzhou, China's stainless
steel manufacturing hub, YUHAO operates a fully integrated quality
management system backed by comprehensive in-house testing
capabilities. Our BA tubes are exported to the United States, UAE,
Turkey, Thailand, Russia, and South Korea, serving industries
ranging from precision instrumentation to large-scale petrochemical
projects. Every tube undergoes rigorous NDT inspection including
eddy current, hydrostatic, and ultrasonic testing before shipment. Contact YUHAO today for a tailored quotation, technical datasheet, or free sample
evaluation. We offer flexible MOQ starting from 100 KGS with
competitive lead times of 15-25 days for production orders.
Choose YUHAO, Choose Better Every Day — 内壁极低粗糙度 Ra 值 |
