H62 thin brass tube outer diameter 7mm inner 6.6mm 6.5mm 6.4mm 6mm 5mm 4mm 3mm Micro copper pipe Capillary Hollow brass tube

H62 thin brass tube outer diameter 7mm inner 6.6mm 6.5mm 6.4mm 6mm 5mm 4mm 3mm Micro copper pipe Capillary Hollow brass tube

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