A HYPOTUBE MANUFACTURED FROM AISI 300 OR 400 SERIES STAINLESS STEEL FOR MEDICAL PURPOSES. IT IS WELDED AND REDRAWN, COLD WORKED AND SEAMLESS. IT IS MADE FROM FLAT STRIP WHICH IS FORMED AND WELDED INTO TUBULAR SECTIONS OF 1.2MM IN DIAMETER. IT IS THEN PLUG DRAWN ON A PURPOSE BUILT DRAWING BENCH IN ORDER TO SET THE TUBES WALL THICKNESS. IT IS FURTHER WORKED BY ANNEALING AND FURTHER DRAWN TO SIZE.

GENERAL INTERPRETATIVE RULES 1 & 6 THE HARMONISED SYSTEM EXPLANATORY NOTES TO HEADING: 7304 THE TEXT TO TARIC CODES: 7304 41 00 99