stainless steel capillary pipes material: tp304, tp304l, tp316, tp316l,tp321h standard: astm b360, astm a312/a312m size: 0.2-5.0mm outer diameter, 0.1-2.0mm wall thickness surface: annealed, cold drawing, polished. condition: hard, half hard, soft. features: high precision, smooth internal and external surface. application: precision instruments and apparatus, electronics and electric appliance; automatic apparatus and others.