Stainless Steel Capillary Tubes

Stainless steel tubes with an outside diameter ranging from 0.32 mm to 8.0mm are referred as capillary tubes, of which wall thickness ranges from 0.08 mm to 2.0mm. The capillary tubes are characterized by tight tolerances, and the tube inside the surface is free from oil, grease and other particles. At WLDSTEEL, we generally produce and manufacture capillary steel pipe in accordance with ASTM A/ASME SA 213/269/632/511. We can offer to customize service if customers have more stringent requirements on capillary dimensional accuracy and surface finish, including stainless steel bright annealed pipe, electrolytically polished pipe, in addition, we provide flaking, closing, punching, cutting, bending and other processing services

The Stainless Steel Capillary Tubes Specifications

  • ASTM A/ASME SA 213 Capillary Tubes
  • ASTM A/ASME SA269 Capillary Tubes
  • ASTM A/ASME SA511 Capillary Tubes
  • ASTM A/ASME SA632 Capillary Tubes
  • ……

Available grades of Stainless Steel Capillary Tubes

The Features of Stainless Steel Capillary Tubes

  • High dimensional accuracy.

The outer diameter tolerance of stainless steel capillary is generally within ±0.10mm, and the wall thickness is within ±10%. It can also be customized to make the outside diameter tolerance within ±0.05mm and wall thickness within ±5% according to customer requirements.

  • High surface finish.

Generally, bright annealing or fine polishing can make the surface roughness up to less than 0.2um.

  • The surface hardness of the steel tube can be controlled between 70HRB-80HRB.

The Applications of Stainless Steel Capillary Tubes

Stainless steel capillary widely used in petrochemical, electronics, medical, aerospace, medical, pharmaceutical, food machinery, power generation, semiconductor, jewelry and other fields.

  • Medical equipment. Injection needle tube, puncture needle tube, temperature sensor temperature tube, thermometer tube, temperature controller tube.
  • Automatic instruments. Automatic instrument signal tube, protection tube; Precision optical ruler circuit, industrial sensors, electronic equipment circuit protection tube, all kinds of electronic microtube, optical fiber accessories, optical mixer.
  • Pen manufacturing. Core tube, pen tube.
  • Electrical and sporting goods. All kinds of antenna tube, car tail antenna, mobile phone extension antenna, laptop antenna and fishing tube, fishing rod, etc.