304 TP316/316L Monel400 HC276 Inconel600/625 904L Incoloy825/800 etc.
Outer diameter 3mm, wall thickness 0.5mm etc. (non-standard order, need to consult online).
Cold rolling, cold drawing, soft appearance, mechanical polishing.
Tolerance range is small, accuracy is high, polishing is clean inside, for card sleeve link.
Industries such as instrumentation, petrochemical, pharmaceutical, gas, pressure vessels, online analysis and testing.