Our 304 stainless steel capillary tubes are precision-engineered for medical experiments and critical fluid transfer applications. Designed with exceptional biocompatibility and corrosion resistance, these tubes ensure reliable performance in sterile environments such as cell culture, pharmaceutical delivery, and reagent handling. The smooth inner wall minimizes residue adhesion and cross-contamination risks, while customizable dimensions and specialized designs (e.g., double-tube bent dispensing needles) enable versatile use in complex experimental setups. All products comply with ISO 13485 clean production standards and include material certification (GB/T 4234) for full traceability.
Customization Services
We offer tailored solutions to meet specific experimental needs:
Dimensional Customization: Inner/outer diameter, length, bending angle, and arc.
Port Treatment: Flat, conical, or Luer interface adaptations.
Surface Finish: Electropolishing to Ra ≤0.4μm for ultra-smooth interiors.
Laser Etching: Permanent markings for batch tracking and identification.
Clean Production: ISO 13485-compliant manufacturing with material certification.
Product Applications
Medical Fluid Transfer: Accurate delivery of cell culture media, pharmaceuticals, and reagents.
Microsampling & Microfluidic Chips: Precision handling of minimal-volume liquids.
Dual-Liquid Dispensing: Simultaneous or alternating delivery via double-tube bent needles.
Surface Treatment & Directional Spraying: Controlled-angle dispensing for spatial constraints.
High-Pressure Environments: Leak-free performance in demanding hydrodynamic conditions.
Technical Specifications
Parameter
Specification
Material
Medical-Grade 304 Stainless Steel
Biocompatibility
Excellent (ISO 10993 compliant)
Inner Diameter Options
0.1mm, 0.2mm, 0.3mm (Custom sizes available)
Length Range
50mm - 500mm (Custom lengths supported)
Surface Roughness (Ra)
Electropolishing to ≤0.4μm (Standard or optional)
Bending Angle Accuracy
Precisely controllable (30°, 45°, 90° ±1°)
Dual-Tube Structure
Parallel capillaries for simultaneous/alternating liquid delivery
Pressure Resistance
High-pressure stable (Leak-free under rated conditions)
Port Options
Flat, conical, Luer lock interface
Certifications
ISO 13485, Material Reports (GB/T 4234)
Marking
Laser etching for batch traceability
Key Advantages
Precision & Cleanliness: Smooth inner walls and electropolishing minimize contamination.
Flexibility: Custom angles and dual-tube design enable complex experimental workflows.
Durability: Corrosion-resistant and mechanically robust for long-term use.
Traceability: Full material certification and laser etching ensure quality control.
Note: All products undergo rigorous inspection for dimensional accuracy, surface quality, and pressure resistance. Custom orders include technical support and documentation tailored to application requirements.
Main Product
Company Profile
Dongguan Yu Lin Sen Metal Technology Co., Ltd.: Has obtained theGB/T 19001-2016/ISO 9001:2015 quality system certification, as well as the GB/T42061-2022/ISO 13485:2016 medical device quality system certification. Focuses on the research and production of non-standard metal medical device precision parts, mainly as machined metal products. It possesses dozens of high-precision engra-ving lathes and CNCequipment,including CNC numerical control, numerical control centering machine, automatic lathes, turningmilling combined machines, precision laser cutting processing of stainless steel capillary tubes and stainless steel thin-walled tubes for sec-ondary processing. Main materials: stainless steel tubes, stainless steel, copper, aluminum alloy, etc. for non-standard processing and customization. Widely applied in tools, electronics, electrical appliances, medical devices, automotive parts, transportation, and other industries. The company has been recognized by the industry for its "quality-oriented, honest operation" philosophy, mainly providing non-standard part prototyping and batch production processing, supporting custom drawings and sample customization, etc. The process flow is stable and efficient, integrating industry and trade for rapid delivery, with craftsmanship spirit ensuring quality, without middlemen, excellent value for money, and the company adheres to the business philosophy of "customer first, quality first, striving for excellence, win-win cooperation", "Confident and reliable after-sales guarantee!!!".
Product Advantage
It has obtained the quality system certification in accordance with GB/T 19001-2016/ISO 9001:2015, as well as the medical device quality system certification in accordance withGB/T 42061-2022/ISO13485:2016. We focus on processing and customizing products for medical device hardware, and we have dozens of precision CNC lathes and precision laser cutting processing equipment. We also have a R&D team composed of senior engineers and technicians. We are committed to providing customers with high-quality and high-precision processing and customization services for hardware parts, ensuring that each product meets the strict standards and requirements of the medical device industry. Through continuous optimization of production processes and improvement of technical levels, we can meet the diverse needs of customers and contribute to the development of the medical device industry.