BS ISO 10144:2018 pdf download

BS ISO 10144:2018 pdf download.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.]
4.4.3.2 Extent of sampling and testing
Three different diameters, representing the smallest, largest and an intermediate diameter of the intended scope of approval, shall be tested for each grade and manufacturing process. The test specimens for each selected diameter shall come from at least 30 different bundles/coils, with one sample selected from each bundle/coil. The samples shall be distributed equally between the chosen casts and shall be taken to determine each mechanical and geometrical property specified in the product standard. The chemical composition shall be determined on one specimen from at least three different casts for each selected diameter. The test samples shall be taken at random from the material presented for testing by a representative from the inspection body. Care should be taken to ensure that the test specimens taken are representative of the material.