72085300 under HS Code Others, 73053990 under HS Code OTHER TUBES AND PIPES (FOR EXAMPLE, WELDED, RIVETED OR SIMILARLY CLOSED), HAVING CIRCULAR CROSS-SECTIONS, THE EXTERNAL DIAMETER OF WHICH EXCEEDS 406.4 MM, OF IRON OR STEEL - OTHER, WELDED : OTHER : OTHER, and 83014090 under HS Code PADLOCKS AND LOCKS (KEY, COMBINATION OR ELECTRICALLY OPERATED), OF BASE METAL; CLASPS AND FRAMES WITH CLASPS, INCORPORATING LOCKS, OF BASE METAL; KEYS FOR ANY OF THE FOREGOING ARTICLES, OF BASE METAL - OTHER LOCKS: OTHER were the top imported HS Codes by RA RR MECHANICAL ENGINEERING JOINT STOCK COMPANY in 2021.