Capillary tubes

Our capillary tubes have precise dimensions, a bright surface, are cleaned and ready to use! Merinox offers a wide range of seamless capillary tubing, available in stainless steel, nickel alloys and titanium. The current stock is available in the following alloys; 304, 304L, 321, 316, 316L, 316Ti, 310, 6Mo, 400, 825, C22, C276 and Titanium Grade 2. The capillary tubes are either annealed (hardness < 180HV) or hard drawn (hardness 260-330 HV). The tolerances are according to EN10216-5 TC1/ISO 1127 D4/T3 or ASTM A 269/A 213 mostly closer. Our capillary tubes are characterised by tight tolerances with precise dimensional accuracy, it smooths and cleans bright surfaces and is free from oil, grease, and other particles. This ensures an optimised flow of liquids and gases for all kind of industrial applications.

Discover the stock range of our capillary tubes


OD = + 0,05 mm & – 0,00 mm / + 0,002” & – 0,000”

ID= + 0,00 mm & – 0,05 mm / + 0,000” & – 0,002”


  • Bright annealed: yield strength 500 – 700 N/mm²
  • Half hard: yield strength 700 – 800 N/mm²
  • Hard drawn: yield strength 800 – 900 N/mm²
  • Extra hard: yield strength >1000 N/mm²


  • Single random of 3.5 to 6 meters
  • Coils up to 1524 metres. long
  • Cut to lengths on customer specification

Industrial applications:

  • Gas lines
  • Manometry
  • Measuring
  • Cardiology
  • Medical instruments
  • Endoscopy
  • Sensors
  • Liquid lines
  • Chromatography
  • Implants
  • Pyrometry
  • General Industrial

Capillary tubes end possibilities

The point styles on needles and cannula can be used for a wide variety of applications, Merinox has the experience and capability to supply intricate parts to exact specifications. By utilising the latest precision, high-speed equipment specially designed to cut, flare, reduce, expand, bulge, close, dimple, lance, slot, bend, coil, pierce or notch. We provide the highest quality at a very competitive cost. On request we can also supply; other dimensions respective qualities or redrawing welding all according in same conditions.

Contact us today

Would you like to invest in capillary tubes of the highest quality? Or are you more interested in high-pressure tubes or coiled tubes for example? Get in touch with us. Fill out the online form, phone us at the number +31 (0)78 691 7800 or send an email to We are happy to provide some valuable and professional advice.