304/316 Stainless Steel Capillary Tubes in Pharmaceutical Manufacturing
Pharmaceutical Grade Capillary Tubes: Purity & Compliance
Pharmaceutical manufacturing demands the highest standards for material purity, surface quality, and regulatory compliance. Stainless steel capillary tubes in pharmaceutical applications must meet stringent requirements for cleanability, corrosion resistance, and biocompatibility. 316L stainless steel is the preferred grade for most pharmaceutical applications due to its superior corrosion resistance and electropolishability.
Applications in Pharmaceutical Manufacturing
Bioreactor & Fermentation Systems
- pH and DO sensor protection tubes: Real-time process monitoring
- Temperature sensing: Fermentation temperature control
- Pressure sensing: Bioreactor pressure monitoring
- Sampling lines: Aseptic sample extraction
Drug Formulation
- Mixing tank instrumentation: Level, pressure, temperature sensing
- Fluid transfer lines: Precision dosing and blending
- CIP/SIP systems: Clean-in-place and sterilize-in-place circulation
Purified Water Systems
- WFI (Water for Injection) systems: High-purity water distribution
- Purified water monitoring: Conductivity, TOC, temperature sensing
- Steam sterilization: Autoclave and sterilizer components
Material Requirements
| Parameter | Requirement |
|---|---|
| Material Grade | 316L (low carbon, ≤0.03%) |
| Surface Finish | Electropolished, Ra ≤0.4μm (typically ≤0.2μm) |
| Weldability | Orbital welding with purge gas protection |
| Cleanliness | Ultrasonic cleaned, packaged for sterile handling |
| Documentation | EN 10204 3.1, FDA compliance, USP Class VI |
Regulatory Compliance
| Standard | Description |
|---|---|
| FDA 21 CFR Part 210/211 | cGMP for pharmaceutical manufacturing |
| EU GMP Annex 1 | Sterile medicinal products |
| USP <661> | Plastic and metallic packaging materials |
| ASME BPE | Bioprocessing equipment standards |
| ISO 9001:2015 | Quality management |
Common Sizes for Pharmaceutical
| Application | OD (mm) | Wall (mm) |
|---|---|---|
| Sensor protection | 3.0-6.0 | 0.3-0.5 |
| Sampling lines | 1.5-3.0 | 0.2-0.3 |
| Fluid transfer | 2.0-4.0 | 0.25-0.5 |
| CIP/SIP lines | 3.0-6.0 | 0.3-0.5 |
Surface Treatment Requirements
- Electropolishing: Ra ≤0.2μm for bioprocessing contact surfaces
- Passivation: Nitric or citric acid passivation
- Orbital welding: Purge gas protection for clean welds
- Sanitary fittings: Tri-clamp, DIN, SMS connections
Request a Quote
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