Stainless Steel Capillary Tube

What is stainless steel capillary tube used for?

Stainless steel capillary tube is used in medical devices (catheters, endoscopes, surgical tools), scientific instruments, HVAC refrigeration systems, automotive sensors, and analytical laboratory equipment where precise small-diameter tubing with tight tolerances is required.

What is the OD range for stainless steel capillary tube?

TeCarve supplies stainless steel capillary tubes with outer diameter from 0.1 mm to 5.0 mm and wall thickness from 0.03 mm to 1.0 mm. OD tolerances of ±0.01 mm are achievable for medical and scientific precision applications.

What grades of stainless steel are used for capillary tubes?

Common grades are 304, 316L, 316, and 321. Grade 316L is preferred for medical and pharmaceutical use due to its biocompatibility and resistance to sterilization agents. Electropolished inner and outer surfaces are available for cleanroom and medical applications.

What is the maximum continuous length for capillary tube?

Straight capillary tubes are available up to 6 m. Coiled capillary tube can be supplied in continuous coils exceeding 15,000 m, eliminating joints for applications requiring long, leak-free runs such as refrigeration and instrumentation.

What documentation is available for medical capillary tube projects?

Documentation requirements depend on the intended application and order specification. Contact TeCarve to confirm which material certificates, inspection records, and traceability documents can be supplied for your project.

What is the minimum order quantity (MOQ) for stainless steel capillary tube?

Standard capillary tube trial orders start from 100 pieces per size/spec. For micro-bore, ultra-thin-wall, tight-tolerance, custom-cut, or special-finish tubing, prototype quantities and production MOQ are confirmed after technical review. In-stock standard sizes ship within 7–10 days.