73079290 under HS Code TUBE OR PIPE FITTINGS (FOR EXAMPLE, COUPLINGS, ELBOWS, SLEEVES), OF IRON OR STEEL - OTHER : THREADED ELBOWS, BENDS AND SLEEVES : OTHER, 72165099 under HS Code Others, and 72165019 under HS Code Others. were the top exported HS Codes by NAM HAI STEEL IMPORT EXPORT JOINT STOCK COMPANY in 2021.