31371635machine compositionPT2026-03-30 20:40:14UF31371636composition, machineNDUF31371637machine-compositionNDUF31371638machine-set typeNDUF31371639mechanical compositionNDBT31340722compositionPTNT31410281hot-metal compositionPTNT31410296cold compositionPTRT31420733composing machinesPT