Stainless steel capillary tube is produced by seamless material like 304/304L, 316/316L, 321 310s and so on. The size range outer diameter is 1-6mm and wall thickness is 0.1-1mm. The tube would follow the standard ASTM A213 and A 269. It is widely used in industries of pressure meter, thermometer, chromatic , spectrum analyzer, medical instrument.