1.4404 Stainless Steel Bright Annealed Pipe
Product Name:1.4404 Stainless Steel Bright Annealed Pipe
European Designation:X2CrNiMo17-12-2
Standard:EN 10217-7 / EN 10312 / ASTM A312 / ASTM A269
Pipe Type:Seamless / Welded
Manufacturing Process:Cold Drawn / Cold Rolled / TIG Welded
Heat Treatment:Solution Annealed / Bright Annealed
Surface Finish:Bright Annealed (BA), Smooth and Reflective
Outside Diameter (OD):6–630 mm
Wall Thickness:0.5–30 mm
Length:3,000–12,000 mm or Customized
Surface Roughness:Typically Ra ≤ 0.8 μm; customized finish available
Send E-mail:info@gneestainless.com
Tel:+8615824687445
Description
Gnee Steel (Tianjin) Co., Ltd. is one of the most professional manufacturers and suppliers of 1.4404 stainless steel bright annealed pipe in China. With abundant experience, we warmly welcome you to wholesale customized 1.4404 stainless steel bright annealed pipe from our factory. For price consultation, contact us.
What is 1.4404 Stainless Steel BA Tube?
The primary characteristics of 1.4404 Bright Annealed stainless steel tubing are asmooth, bright surface and an extremely thin oxide layer. By utilizing a controlled atmosphereannealing process, surface scale formation is minimized, resulting in a clean appearance andreducing the need for subsequent pickling and polishing operations. For sanitary and high-purity applications, the smooth inner surface helps reduce product residue and deposit buildup,thereby making cleaning easier. Customers can specify surface roughness requirements (suchas Ra S 0.8 m or lower) based on project needs, particularly in the food, pharmaceutical,and high-purity process piping sectors.
GNEE supplies 1.4404 bright annealed stainless steel pipes that comply with EN standards. Byemploying vacuum bright annealing technology, the pipe surface achieves a finish of Ra 0.3 m and can pass a salt spray test exceeding 900 hours with no scale residue, fully meetingthe strict cleanliness requirements of FDA and GMP guidelines. Customization for outerdiameter, wall thickness, length, dimensional tolerances, and surface quality specifications isfully supported. The typical supply range covers outer diameters from 6 mm to 630 mm andwall thicknesses from 0.5 mm to 30 mm, with specific dimensions determined by themanufacturing process, applicable standards, and project specifications.
Our Products
ASTM A269: Seamless and Welded Austenitic Stainless Steel Tubing for General Service.
ASTM A270: Seamless and Welded Austenitic Stainless Steel Sanitary Tubing.
EN 10216-5: Seamless steel tubes for pressure purposes (Technical delivery conditions).
DIN 11850 / EN 10357: Tubes for the food and chemical industry.
If you'd like to proceed, please let me know:
What outer diameter and wall thickness do you need?
Are you looking for seamless or welded pipe?
What is the target industry or application?
Applications of 1.4404 Stainless Steel Pipe
High-Purity & Sanitary Systems: Pharmaceutical, biotechnology, food & beverage processing, semiconductor ultra-pure gas lines.
Chemical & Petrochemical: Condensers, heat exchangers, pressure piping, aggressive chloride/acid environments.
Instrumentation & Hydraulic Lines: Precision instrumentation lines, automated control systems, marine and offshore installations.
SS 316L Bright Annealing Tube Specification
| Item | Specification |
|---|---|
| Product Name | 1.4404 Stainless Steel Bright Annealed Pipe |
| European Designation | X2CrNiMo17-12-2 |
| Standard | EN 10217-7 / EN 10312 / ASTM A312 / ASTM A269 |
| Pipe Type | Seamless / Welded |
| Manufacturing Process | Cold Drawn / Cold Rolled / TIG Welded |
| Heat Treatment | Solution Annealed / Bright Annealed |
| Surface Finish | Bright Annealed (BA), Smooth and Reflective |
| Outside Diameter (OD) | 6–630 mm |
| Wall Thickness | 0.5–30 mm |
| Length | 3,000–12,000 mm or Customized |
| Surface Roughness | Typically Ra ≤ 0.8 μm; customized finish available |
| Inspection | Dimensional Inspection, PMI, Hydrostatic / Eddy Current Testing as Required |
| Certification | EN 10204 3.1 MTC Available |
| Packaging | Plastic Caps + Waterproof Film + Wooden Cases / Bundles |
| Customization | OD, Wall Thickness, Length, Surface Finish and Inspection Requirements Available |
1.4404 SS Pipe and Tube Equivalent Grades
| STANDARD | UNS | WERKSTOFF NR. | AFNOR | EN | JIS | BS | GOST |
| SS 316L | S31603 | 1.4404 / 1.4435 | Z3CND17‐11‐02 / Z3CND18‐14‐03 | X2CrNiMo17-12-2 / X2CrNiMo18-14-3 | SUS 316L | 316S11 / 316S13 | 03Ch17N14M3 / 03Ch17N14M2 |
Chemical Composition (Weight %)
| Element | Carbon (C) | Silicon (Si) | Manganese (Mn) | Phosphorus (P) | Sulfur (S) | Chromium (Cr) | Nickel (Ni) | Molybdenum (Mo) | Nitrogen (N) |
| Value (%) | ≤ 0.030 | ≤ 1.00 | ≤ 2.00 | ≤ 0.045 | ≤ 0.015* | 16.5 – 18.5 | 10.0 – 13.0 | 2.00 – 2.50 | ≤ 0.11 |
*Lower sulfur content is often requested for high-purity BA tubes to improve weldability.
Mechanical Properties (at 20°C)
| Property | Metric Value |
| Tensile Strength (Rm) | 500 – 700 MPa |
| Yield Strength (Rp0.2) |
≥ 200 MPa |
| Elongation (A5) |
≥ 40% |
| Hardness (Rockwell B) |
≤ 90 HRB |
| Hardness (Vickers) |
≤ 200 HV |
What Is the Difference Between 316L BA Pipe and AP Pipe?
| Characteristic | Bright Annealed (BA) Pipe | Annealed & Pickled (AP) Pipe |
|---|---|---|
| Appearance | Bright, highly reflective, smooth surface | Silver-white, matte or dull surface |
| Internal Surface Roughness (Ra) | Very low, typically Ra ≤ 0.4 μm | Higher, typically Ra ≥ 1.0 μm |
| Cleanliness | Very high cleanliness; suitable for high-purity fluids | Relatively lower cleanliness; surface condition depends on pickling and cleaning process |
| Surface Treatment | Bright annealed in a controlled/protective atmosphere | Annealed followed by acid pickling to remove oxide scale |
| Surface Finish | Bright, smooth and decorative | Uniform silver-white, non-reflective finish |
| Typical Applications | Pharmaceutical, semiconductor, food processing, dairy, high-purity gas and fluid systems | Chemical processing, industrial piping, heat exchangers and general process applications |
To help you select the appropriate product or standard, could you please provide the following information?
Your primary application area or industry (e.g., semiconductor, chemical manufacturing, or food processing)?
The nature of the fluid or gas flowing through the pipeline?
Does your project need to comply with specific standards (such as ASME BPE or ASTM A269)?
Product Testing
Regarding quality control, GNEE arranges PMI (Positive Material Identification), dimensional inspections, hardness testing, hydrostatic testing, eddy current testing, and visual/surface inspections in accordance with applicable standards and procurement specifications. Accompanying documentation includes details on chemical composition, mechanical properties, and heat treatment status, along with EN 10204 3.1 Material Test Certificates (MTC), ensuring traceability for every batch of products.
1.4401 stainless steel pipe suppliers
With over 18 years of experience in stainless steel exports, GNEE serves clients in more than 60 countries, catering to both standard procurement needs and customized industrial projects. We employ protective measures-such as plastic end caps, waterproof packaging, and reinforcement with wooden crates or steel strapping-to effectively prevent scratches, moisture damage, and contamination during international transit.
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