Rafael García

General Manager

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. (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 9001:2008

First issued on:

1999-08-01

Last issued:

2017-07-11

Validity date: 2018-07-19

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

General Manager

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. (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 9001:2008

First issued on:

2015-07-16

Last issued:

2017-06-16

Validity date: 2018-07-16

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

General Manager

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. (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 9001:2008

First issued on:

2015-07-16

Last issued:

2017-06-16

Validity date: 2018-07-16

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

General Manager

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. (MALTZAGA)

BO de Maltzaga, s/n apdo. 183 . 20600 - EIBAR (GIPUZKOA)

for the following field of activities

Production of round, square and hexagonal section Steel drawn bars, and production Steel drawn peeling bars and cutting to length.

has implemented and maintains a

Quality Management System

which fulfills the requirements of the following standard

ISO 9001:2008

First issued on:

2015-07-16

Last issued:

2017-06-16

Validity date: 2018-07-16

Registration Number: ES-0440/2015 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

General Manager

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. (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 9001:2008

First issued on:

2015-07-16

Last issued:

2017-06-08

Validity date: 2018-07-16

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

General Manager

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. (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 9001:2008

First issued on:

2015-07-17

Last issued:

2017-05-16

Validity date: 2018-07-17

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

General Manager

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.

PO ALEJANDRO CALONJE, 1. 39200 - REINOSA

(CANTABRIA)

for the following field of activities

Production and assembly of forged and cast pieces and special steel in forged and rolled, turned and cutting bars.

has implemented and maintains a

Quality Management System

which fulfills the requirements of the following standard

ISO 9001:2008

First issued on:

2012-11-14

Last issued:

2017-07-18

Validity date: 2018-09-14

Registration Number: ES-0920/2012 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

General Manager

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. (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 9001:2008

First issued on:

2015-07-17

Last issued:

2017-06-16

Validity date: 2018-07-17

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