304 TP316/316L Monel400 HC276 Inconel600/625 904L Incoloy825/800 etc.
Outer diameter 3mm, wall thickness: 0.5mm and so on. (non standard order, need to consult online)
For cold rolling and bright annealing, the roughness of the inner wall is about 0.45um, the British national standard is the majority, and the tolerance range is small.
Clean and bright inside and outside
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