| SAIPEM/ENI/AGIP | IT | SIFEM INTERNATIONAL | IT | CAPITAL VALVES | UK |
| TECNIMONT | IT | S.E.F. | IT | SAMIR | MA |
| GE/NUOVO PIGNONE | IT | ILVA | IT | POLIBRASIL | BZ |
| RM - RAFFINERIA MILAZZO | IT | ERG - RAFFINERIA PRIOLO | IT | RIO POLIMEROS | BZ |
| ABB | IT | SASOL - RAFFINERIA PRIOLO | IT | FAUJI FERTILIZER | ID |
| RENCO | IT | FISIA ITALIMPIANTI | IT | OMAN FERTILIZER | OM |
| POLIMERI EUROPA | IT | SARPOM | IT | MOTOR OIL HELLAS | GR |
| RIVA | IT | EDIPOWER | IT | EGYPTIAN LNG | EG |
| NOOTER ERIKSEN | IT | PERONI POMPE | IT | TOYO ENGINEERING CO. | JP |
| TECHNIP | IT | FOSTER WHEELER | IT | ||
| ENICHEM - MARGHERA | IT | ENEL | IT | ||