Precision pipes

  • Seamless precision tubes

Seamless precision tubes – general information

Made of AISI 316/316L stainless steel, cold-drawn, annealed. Designed for high pressure systems of fluids and gases, high pressure hydraulics, instrumentation systems. The precise, tight-tolerance outer diameter and wall thickness, as well as controlled mechanical and technological properties of the material (certificate 3.1 acc. to EN-10204) allow for their application in the most critical systems. They are used as straight or bent sections that can be connected by many different stainless steel tube connectors – from standard hydraulic cutting ring connectors (DIN 2353), JIC connectors ( flared pipes – 37° cone), to twin-ferrule LET-LOK® fittings intended for instrumentation. They can be joined by welding. Tube hardness < 90 HRB. Outer diameter tolerance for imperial tubes (AS™A269: ±0,005” (±0,127 mm)), wall thickness tolerance for imperial tubes (AS™A269: ±15% to 1/2”, from 1/2” and bigger: ±10%). Metric tube tolerance acc. to EN ISO 1127 D4T3 or D4T4.

Tube material and dimensions selection must consider:

  • desired flow rate of the medium (inner diameter);
  • corrosion resistance (material);
  • tube joining method, connectors used in the system:
  • resistance to working pressure and other loads (material, outer diameter and tube wall thickness).


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Seamless precision tubes

Precision pipes in AISI 316/316L stainless steel

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