73072300 under HS Code TUBE OR PIPE FITTINGS (FOR EXAMPLE, COUPLINGS, ELBOWS, SLEEVES), OF IRON OR STEEL - OTHER, OF STAINLESS STEEL : BUTT WELDING FITTINGS, 84169000 under HS Code FURNACE BURNERS FOR LIQUID FUEL, FOR PULVERISED SOLID FUEL OR FOR GAS; MECHANICAL STOKERS, INCLUDING THEIR MECHANICAL GRATES, MECHANICAL ASH DISCHARGERS AND SIMILAR APPLIANCES - PARTS, and 73041110 under HS Code TUBES, PIPES AND HOLLOW PROFILES, SEAMLESS, OF IRON (OTHER THAN CAST IRON) OR STEEL - LINE PIPE OF A KIND USED FOR OIL OR GAS PIPELINES : -- OF STAINLESS STEEL: --- TUBES AND PIPES. were the top exported HS Codes by FLAMEMAX ENGINEERING in 2023.