Rafael GARCÍA MEIRO

Chief Executive Officer

Michael Drechsel

President of IQNet

Orig

inal

Ele

ctro

nic

Cert

ifica

te

CERTIFICATE IQNet and AENOR

hereby certify that the organization

SIDENOR ACEROS ESPECIALES S.L.U (BASAURI)

BO UGARTE, S/N. 48970 - BASAURI

(BIZKAIA)

for the following field of activities

Production of especial steels in rolled and peeled bars.

has implemented and maintains a

Quality Management System

which fulfills the requirements of the following standard

ISO 9001:2015

First issued on:

1999-08-01

Last issued:

2018-07-09

Validity date: 2021-07-09

Registration Number: ES-0039/1994 a

IQNet Partners*: AENOR Spain AFNOR Certification France AIB-Vinçotte International Belgium ANCE Mexico APCER Portugal CCC Cyprus

CISQ Italy CQC China CQM China CQS Czech Republic Cro Cert Croatia DQS Holding GmbH Germany FCAV Brazil FONDONORMA Venezuela ICONTEC Colombia IMNC Mexico Inspecta Certification Finland IRAM Argentina

JQA Japan KFQ Korea MIRTEC Greece MSZT Hungary Nemko AS Norway NSAI Ireland PCBC Poland Quality Austria Austria RR Russia SII Israel SIQ Slovenia SIRIM QAS International Malaysia

SQS Switzerland SRAC Romania TEST St Petersburg Russia TSE Turkey YUQS Serbia IQNet is represented in the USA by: AFNOR Certification, CISQ, DQS Holding GmbH and NSAI Inc.

* The list of IQNet partners is valid at the time of issue of this certificate. Updated information is available under www.iqnet-certification.com

Rafael GARCÍA MEIRO

Chief Executive Officer

Michael Drechsel

President of IQNet

Orig

inal

Ele

ctro

nic

Cert

ifica

te

CERTIFICATE IQNet and AENOR

hereby certify that the organization

SIDENOR ACEROS ESPECIALES S.L.U (AZKOITIA)

CR ZUMÁRRAGA, S/N. 20720 - AZKOITIA

(GIPUZKOA)

for the following field of activities

Producion of special steels in rolled and peeled bars and flats.

has implemented and maintains a

Quality Management System

which fulfills the requirements of the following standard

ISO 9001:2015

First issued on:

2015-07-16

Last issued:

2018-07-09

Validity date: 2021-07-09

Registration Number: ES-0437/2015 a

IQNet Partners*: AENOR Spain AFNOR Certification France AIB-Vinçotte International Belgium ANCE Mexico APCER Portugal CCC Cyprus

CISQ Italy CQC China CQM China CQS Czech Republic Cro Cert Croatia DQS Holding GmbH Germany FCAV Brazil FONDONORMA Venezuela ICONTEC Colombia IMNC Mexico Inspecta Certification Finland IRAM Argentina

JQA Japan KFQ Korea MIRTEC Greece MSZT Hungary Nemko AS Norway NSAI Ireland PCBC Poland Quality Austria Austria RR Russia SII Israel SIQ Slovenia SIRIM QAS International Malaysia

SQS Switzerland SRAC Romania TEST St Petersburg Russia TSE Turkey YUQS Serbia IQNet is represented in the USA by: AFNOR Certification, CISQ, DQS Holding GmbH and NSAI Inc.

* The list of IQNet partners is valid at the time of issue of this certificate. Updated information is available under www.iqnet-certification.com

Rafael GARCÍA MEIRO

Chief Executive Officer

Michael Drechsel

President of IQNet

Orig

inal

Ele

ctro

nic

Cert

ifica

te

CERTIFICATE IQNet and AENOR

hereby certify that the organization

SIDENOR ACEROS ESPECIALES S.L.U (VITORIA)

PORTAL DE GAMARRA, S/N. 01013 - VITORIA (ARABA/ALAVA)

for the following field of activities

Production of special steels in rolled bars, rods, peeled and drawn bars.

has implemented and maintains a

Quality Management System

which fulfills the requirements of the following standard

ISO 9001:2015

First issued on:

2015-07-17

Last issued:

2018-07-09

Validity date: 2021-07-09

Registration Number: ES-0443/2015 a

IQNet Partners*: AENOR Spain AFNOR Certification France AIB-Vinçotte International Belgium ANCE Mexico APCER Portugal CCC Cyprus

CISQ Italy CQC China CQM China CQS Czech Republic Cro Cert Croatia DQS Holding GmbH Germany FCAV Brazil FONDONORMA Venezuela ICONTEC Colombia IMNC Mexico Inspecta Certification Finland IRAM Argentina

JQA Japan KFQ Korea MIRTEC Greece MSZT Hungary Nemko AS Norway NSAI Ireland PCBC Poland Quality Austria Austria RR Russia SII Israel SIQ Slovenia SIRIM QAS International Malaysia

SQS Switzerland SRAC Romania TEST St Petersburg Russia TSE Turkey YUQS Serbia IQNet is represented in the USA by: AFNOR Certification, CISQ, DQS Holding GmbH and NSAI Inc.

* The list of IQNet partners is valid at the time of issue of this certificate. Updated information is available under www.iqnet-certification.com

Rafael GARCÍA MEIRO

Chief Executive Officer

Michael Drechsel

President of IQNet

Orig

inal

Ele

ctro

nic

Cert

ifica

te

CERTIFICATE IQNet and AENOR

hereby certify that the organization

SIDENOR ACEROS ESPECIALES S.L.U (REINOSA)

PO ALEJANDRO CALONJE, 1. 39200 - REINOSA

(CANTABRIA)

for the following field of activities

Production of special steels in turned and peeled bars.

has implemented and maintains a

Quality Management System

which fulfills the requirements of the following standard

ISO 9001:2015

First issued on:

2015-07-17

Last issued:

2018-07-09

Validity date: 2021-07-09

Registration Number: ES-0441/2015 a

IQNet Partners*: AENOR Spain AFNOR Certification France AIB-Vinçotte International Belgium ANCE Mexico APCER Portugal CCC Cyprus

CISQ Italy CQC China CQM China CQS Czech Republic Cro Cert Croatia DQS Holding GmbH Germany FCAV Brazil FONDONORMA Venezuela ICONTEC Colombia IMNC Mexico Inspecta Certification Finland IRAM Argentina

JQA Japan KFQ Korea MIRTEC Greece MSZT Hungary Nemko AS Norway NSAI Ireland PCBC Poland Quality Austria Austria RR Russia SII Israel SIQ Slovenia SIRIM QAS International Malaysia

SQS Switzerland SRAC Romania TEST St Petersburg Russia TSE Turkey YUQS Serbia IQNet is represented in the USA by: AFNOR Certification, CISQ, DQS Holding GmbH and NSAI Inc.

* The list of IQNet partners is valid at the time of issue of this certificate. Updated information is available under www.iqnet-certification.com

Rafael GARCÍA MEIRO

Chief Executive Officer

Michael Drechsel

President of IQNet

Orig

inal

Ele

ctro

nic

Cert

ifica

te

CERTIFICATE IQNet and AENOR

hereby certify that the organization

SIDENOR ACEROS ESPECIALES S.L.U (LEGUTIANO)

AV San Blas, 6 - Pol. Ind. Gojain . 01170 - LEGUTIANO

(ARABA/ALAVA)

for the following field of activities

Production of special steel wire drawn coils with heat and surface treatment.

has implemented and maintains a

Quality Management System

which fulfills the requirements of the following standard

ISO 9001:2015

First issued on:

2015-07-16

Last issued:

2018-07-09

Validity date: 2021-07-09

Registration Number: ES-0442/2015 a

IQNet Partners*: AENOR Spain AFNOR Certification France AIB-Vinçotte International Belgium ANCE Mexico APCER Portugal CCC Cyprus

CISQ Italy CQC China CQM China CQS Czech Republic Cro Cert Croatia DQS Holding GmbH Germany FCAV Brazil FONDONORMA Venezuela ICONTEC Colombia IMNC Mexico Inspecta Certification Finland IRAM Argentina

JQA Japan KFQ Korea MIRTEC Greece MSZT Hungary Nemko AS Norway NSAI Ireland PCBC Poland Quality Austria Austria RR Russia SII Israel SIQ Slovenia SIRIM QAS International Malaysia

SQS Switzerland SRAC Romania TEST St Petersburg Russia TSE Turkey YUQS Serbia IQNet is represented in the USA by: AFNOR Certification, CISQ, DQS Holding GmbH and NSAI Inc.

* The list of IQNet partners is valid at the time of issue of this certificate. Updated information is available under www.iqnet-certification.com

Rafael GARCÍA MEIRO

Chief Executive Officer

Michael Drechsel

President of IQNet

Orig

inal

Ele

ctro

nic

Cert

ifica

te

CERTIFICATE IQNet and AENOR

hereby certify that the organization

SIDENOR ACEROS ESPECIALES S.L.U (POLINYA)

PJ Joan Miró nº3 Pol. Ind. Can Humet de Dalt. 08213 - POLINYA (BARCELONA)

CL Joan Miró nº 2 Pol. Ind. Can Humet de Dalt. 08213 - POLINYA (BARCELONA)

for the following field of activities

Production of round, square and hexagonal section steel drawn bars, and ground bars.

has implemented and maintains a

Quality Management System

which fulfills the requirements of the following standard

ISO 9001:2015

First issued on:

2015-07-16

Last issued:

2018-07-09

Validity date: 2021-07-09

Registration Number: ES-0439/2015 a

IQNet Partners*: AENOR Spain AFNOR Certification France AIB-Vinçotte International Belgium ANCE Mexico APCER Portugal CCC Cyprus

CISQ Italy CQC China CQM China CQS Czech Republic Cro Cert Croatia DQS Holding GmbH Germany FCAV Brazil FONDONORMA Venezuela ICONTEC Colombia IMNC Mexico Inspecta Certification Finland IRAM Argentina

JQA Japan KFQ Korea MIRTEC Greece MSZT Hungary Nemko AS Norway NSAI Ireland PCBC Poland Quality Austria Austria RR Russia SII Israel SIQ Slovenia SIRIM QAS International Malaysia

SQS Switzerland SRAC Romania TEST St Petersburg Russia TSE Turkey YUQS Serbia IQNet is represented in the USA by: AFNOR Certification, CISQ, DQS Holding GmbH and NSAI Inc.

* The list of IQNet partners is valid at the time of issue of this certificate. Updated information is available under www.iqnet-certification.com

Rafael GARCÍA MEIRO

Chief Executive Officer

Alex Stoichitoiu

President of IQNet

Orig

inal

Ele

ctro

nic

Cert

ifica

te

CERTIFICATE AENOR has issued an IQNet recognized certificate that the organization:

SIDENOR FORGINGS & CASTINGS, S.L.

PO ALEJANDRO CALONGE nº 1. 39200 - REINOSA

(CANTABRIA)

has implemented and maintains a

Quality Management System

for the following scope:

Production and assembly of forged and cast pieces and especial Steel in forged.

which fulfills the requirements of the following standard

ISO 9001:2015

First issued on: 2012-11-14 Last issued: 2018-07-20 Validity date: 2019-08-31

This attestation is directly linked to the IQNet Partner’s original certificate and shall not be used as a stand-alone document

Registration Number: ES-0920/2012 a

IQNet Partners*: AENOR Spain AFNOR Certification France APCER Portugal CCC Cyprus CISQ Italy CQC China CQM China CQS Czech Republic Cro Cert Croatia DQS Holding GmbH Germany FCAV Brazil FONDONORMA Venezuela ICONTEC Colombia Inspecta Sertifiointi

Oy Finland INTECO Costa Rica IRAM Argentina JQA Japan KFQ Korea MIRTEC Greece MSZT Hungary Nemko AS Norway NSAI Ireland NYCE-SIGE México PCBC Poland Quality Austria Austria RR Russia SII Israel SIQ Slovenia

SIRIM QAS International Malaysia SQS Switzerland SRAC Romania TEST St Petersburg Russia TSE Turkey YUQS Serbia IQNet is represented in the USA by: AFNOR Certification, CISQ, DQS Holding GmbH and NSAI Inc.

* The list of IQNet partners is valid at the time of issue of this certificate. Updated information is available under www.iqnet-certification.com