Bologna, 22-06-2018Certification Body

at TÜV NORD CERT GmbH

This certification was conducted in accordance with the TÜV NORD CERT auditing and certification procedures and is subject to

regular surveillance audits.

TÜV NORD CERT GmbH 45141 EssenLangemarckstraße 20 www.tuev-nord-cert.com

applies a management system in line with the above standard for the following scope

Manufacture of ERW electrical longitudinal welded steel tubes.

BIDUE S.r.l.Via dell’Artigianato, 1645037 Melara (RO)Italy

Management system as per

ISO 9001 : 2015

In accordance with TÜV NORD CERT procedures, it is hereby certified that

C E R T I F I C A T E

Certificate Registration No. 44 100 17 41 0093

Audit Report No. IT-16560/2017

Initial certification 05-03-2002

Valid from 22-06-2018

Valid until 21-06-2021