Li se yon tèm pou gwo lakou fif Et rectangular fif, sa se pou li a nwa fè tiyo ak longè bò egal-ego Et déqual.Li te rolé nan bwat liy/fè a devan apre postè tretman.Generally, the strip steel is unpacked, flattened, crimped, and welded to form a round tube, then the round tube is rolled into a square tube and then cut to the required length.
