Hello Jeronimo,
Please let us know what do you mean by from the orderm de venda?
Are you referring to SD-PS integration topic? If yes, please refer Assembly Processing scenario in SAP Project system.
You can serach forum and find lot of useful links on this topic.
Assembly Processing with SAP PS - Product Lifecycle Management - SCN Wiki
Assembly Process in Project Systems - Product Lifecycle Management - SCN Wiki
Refer these links and come back in case of any specific querries.
Regards
Tushar