ISO 10144:2018

Steels for the reinforcement and prestressing of concrete - Certification scheme for steel bars and wires

This document specifies rules for a certification scheme for continuous production of steel bars, rods and wires for the reinforcement of concrete structures in order to verify conformity with requirements specified in product standards, such as ISO 6935‑1 and ISO 6935‑2. It includes requirements for the production process and management system assessment activities. A product certification scheme for continuous production consists of the following stages: - initial evaluation; - review of evidence of conformity; - certification decision and attestation; - surveillance activities.

Aciers pour l'armature et la précontrainte du béton — Système particulier de certification des barres et fils d'acier

General Information

• Status: Published
• Publication Date: 27-Sep-2018
• ICS: 77.140.15 - Steels for reinforcement of concrete
• ICS: 91.080.40 - Concrete structures
• Technical Committee: ISO/TC 17/SC 16 - Steels for the reinforcement and prestressing of concrete
• Drafting Committee: ISO/TC 17/SC 16 - Steels for the reinforcement and prestressing of concrete
• Current Stage: 9093 - International Standard confirmed
• Start Date: 09-Feb-2024
• Completion Date: 13-Dec-2025

Relations

• Revises: ISO 10144:1991 - Certification scheme for steel bars and wires for the reinforcement of concrete structures
• Effective Date: 04-Nov-2015

Overview

ISO 10144:2018 defines a certification scheme for continuous production of steel bars, rods and wires used for the reinforcement and prestressing of concrete. The standard sets rules to verify conformity with product standards (for example ISO 6935‑1 and ISO 6935‑2) by combining production/process assessment, sampling and testing, internal manufacturer inspection and third‑party certification decisions. Key goals are to confirm manufacturing capability, ensure long‑term quality and provide a framework for surveillance by certification bodies.

Key Topics

• Scope and purpose: Certification for continuous production of reinforcing steels to demonstrate conformity with product standards.
• Certification stages: Initial evaluation, review of evidence, certification decision/attestation, and ongoing surveillance.
• Production assessment: Evaluation of personnel competence, equipment and process control, independence of QA, and suitability of test equipment. A quality system such as ISO 9001 is considered acceptable if it meets the product standard requirements.
• Sampling & testing:
  • Samples must come from actual plant production and cover the full diameter range applied for.
  • Three representative diameters (smallest, largest, intermediate) are tested.
  • For each selected diameter, specimens must come from at least 30 different bundles/coils (one sample per bundle/coil).
  • Chemical composition testing from at least three different casts per selected diameter.
• Internal inspection by manufacturer:
  • Conformance testing per cast: at least one specimen per 40 t and minimum three tests per cast/nominal diameter.
  • Immediate corrective actions and segregation for non‑conforming casts.
  • Determination and monitoring of a long‑term quality level using statistical methods.
• Long‑term verification: Manufacturer testing and surveillance over a period typically between six months and one year, with intensified surveillance if results are insufficient.
• Acceptance criteria: Uses characteristic values and acceptability indices (ks or simplified α values where applicable). Example simplified α values: tensile 15 MPa, yield 10 MPa, elongation 1.5%.
• Certification body requirements: Certification activities should comply with ISO/IEC 17065.

Applications

ISO 10144 is intended for:

• Manufacturers of steel bars, rods and wires for concrete reinforcement seeking product certification for continuous production.
• Certification bodies and inspection agencies conducting initial evaluations, surveillance audits and attestation.
• Specifiers, contractors and infrastructure owners who require certified reinforcing steel to meet structural safety and procurement specifications.
• Quality and compliance teams using statistical long‑term quality monitoring to manage suppliers and control production quality.

Related Standards

• ISO 6935‑1 / ISO 6935‑2 (product standards for reinforcing steel)
• ISO/IEC 17065 (requirements for product certification bodies)
• ISO 9001 (quality management systems - referenced as acceptable when aligned with product standard requirements)

Keywords: ISO 10144, certification scheme, reinforcing steel, steel bars and wires, continuous production, sampling and testing, long‑term quality.

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 10144
Second edition
2018-10
Steels for the reinforcement
and prestressing of concrete —
Certification scheme for steel bars
and wires
Aciers pour l'armature et la précontrainte du béton — Système
particulier de certification des barres et fils d'acier
Reference number
©
ISO 2018
© ISO 2018
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
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below or ISO’s member body in the country of the requester.
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Published in Switzerland
ii © ISO 2018 – All rights reserved

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Initial product and process evaluation . 2
4.1 General . 2
4.2 Purpose . 2
4.3 Organization . 2
4.4 Procedure . 2
4.4.1 General. 2
4.4.2 Assessment of the production conditions . 2
4.4.3 Sampling and testing of specimens . . 3
4.4.4 Certification decision and attestation. 3
4.4.5 Verification of the long-term quality level . 3
5 Internal inspection by the manufacturer . 4
5.1 Purpose . 4
5.2 Procedure . 4
5.2.1 Conformance testing . . 4
5.2.2 Determination of the long-term quality level . 5
6 Surveillance . 6
6.1 Organization . 6
6.2 Purpose . 6
6.3 Procedure . 6
6.4 Evaluation . 6
7 Conformity documents . 7
Bibliography . 8
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO’s adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see www .iso
.org/iso/foreword .html.
This document was prepared by ISO/TC 17, Steel, Subcommittee SC 16, Steels for the reinforcement and
prestressing of concrete.
This second edition cancels and replaces the first edition (ISO 10144:1991), which has been technically
revised.
The following changes have been made:
— the references to ISO/IEC standards have been updated;
— the scheme stages have been aligned with modern certification criteria;
— the sampling criteria have been clarified.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/members .html.
iv © ISO 2018 – All rights reserved

INTERNATIONAL STANDARD ISO 10144:2018(E)
Steels for the reinforcement and prestressing of
concrete — Certification scheme for steel bars and wires
1 Scope
This document specifies rules for a certification scheme for continuous production of steel bars, rods
and wires for the reinforcement of concrete structures in order to verify conformity with requirements
specified in product standards, such as ISO 6935-1 and ISO 6935-2.
It includes requirements for the production process and management system assessment activities.
A product certification scheme for continuous production consists of the following stages:
— initial evaluation;
— review of evidence of conformity;
— certification decision and attestation;
— surveillance activities.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO/IEC 17065, Conformity assessment — Requirements for bodies certifying products, processes and
services
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https: //www .iso .org/obp
— IEC Electropedia: available at http: //www .electropedia .org/
3.1
certification scheme
certification system as related to specified products, processes or services to which the same particular
standards and rules, and the same procedure, apply
3.2
certification body
body that conducts certification of conformity
3.3
characteristic value
value having a prescribed probability of not being attained in a hypothetical unlimited test series
[SOURCE: ISO 16020:2005, 2.4.10, modified — the note has been deleted.]
3.4
inspection
examination of a product design, product, process or installation and determination of its conformity
with specific requirements or, on the basis of professional judgement, with general requirements
Note 1 to entry: Inspection of a process may include inspection of persons, facilities, technology and methodology.
[SOURCE: ISO/IEC 17000:2004, 4.3]
4 Initial product and process evaluation
4.1 General
A signed certification agreement should be concluded before commencing the certification process,
covering the product range requiring certification.
4.2 Purpose
The purpose of product evaluation is to ensure that the manufacturer has the capability and resources
to produce reinforcing steels in accordance with the requirements specified in the product standards.
4.3 Organization
The certification body provides assessment and impartial third-party attestation that the specified
requirements have been achieved. Product certification shall be conducted by certification bodies
meeting the requirements of ISO/IEC 17065.
4.4 Procedure
4.4.1 General
Evaluation consists of the following stages:
— assessment of conditions for production (4.4.2);
— sampling and testing of specimens (4.4.3);
— calculation and verification of the long-term quality level (4.4.5).
If satisfactory results are not achieved in one stage, all the stage
...