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Stainless Steel Capillary Tube

Stainless steel capillary tubes are produced by cold drawing or cold rolling of seamless or welded mother tubes, followed by bright annealing and precision straightening.

This process ensures extremely tight dimensional tolerances and mirror-like inner surfaces.

They offer high precision, superior corrosion resistance, and smooth flow characteristics, making them ideal for instrumentation, medical devices, sensors, and microfluidic systems where reliability and cleanliness are essential.

Description

Item Details
Outer Diameter (OD) 0.2 – 6.0 mm
Wall Thickness (WT) 0.02 – 2.0 mm
Length Coils or straight lengths; Cut-to-length available upon request
Tolerance ±0.003 mm (OD), ±0.005 mm (WT), ±0.05 mm (L)
Surface Finish Bright Annealed (BA), Mechanically Polished (MP), pickled, electropolished (EP)
Standards ASTM A632 / A269 / A213 / EN 10216-5 / EN 10217-7 / GB/T 14976, etc.
Certificates Mill Test Certificate (MTC) / ISO / SGS / BV / TÜV
Available Grades 304, 304L, 316, 316L, 321, 904L, 2205, others upon request
Industry Application Fields
Medical & Laboratory Needles, Catheters, Endoscope Parts
Instrumentation & Sensors Thermocouple Tubes, Pressure Lines
Industrial & Energy Process Control Tubing, Chemical Instrumentation
Automotive & Aerospace Fuel Injection Tubes, Brake System Lines
Electronics & Precision Components Support Shafts, Sensor Casings

 

 

Each stainless steel capillary tube is supplied with a Mill Test Certificate (MTC) for full traceability by heat and batch number.

A. For standard grades, previous MTCs can be provided for review of chemical composition and mechanical properties prior to purchase.

B. For special alloys, corresponding MTCs will be issued and shared prior to shipment to ensure full compliance with your requirements.

 

 

Each bundle is wrapped in plastic film or woven bags, then packed into fumigated wooden cases with internal cushioning to prevent vibration and surface damage during transit. All wooden cases are ISPM-15 compliant and clearly labeled for full traceability.

Optional customized packing—such as individual tube sleeves, desiccant bags, or logo-marked wooden boxes—is available upon request.

 

Shanghai Uprime Metal Co., Ltd.

Address

5F, No.29, Lane 2055 Longhao Road, Jinshan District, Shanghai, China

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+86-21-60132946
+86-18456696170

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