BS ISO 16172:2018 pdf download

BS ISO 16172:2018 pdf download.Steel sheet, metallic-coated by the continuous hot-dip process for corrugated steel pipe
1 Scope
This document is applicable to the minimum requirements for steel sheet used in the manufacture of corrugated steel pipe, in coils, flat cut lengths and corrugated cut lengths metallic-coated by the continuous hot-dip process.
This product is intended for storm sewers, culverts, drains and similar uses.
Several metallic-coated materials are covered, which relies on users to determine which product best serves their needs. Four different metallic coatings are included:
— zinc coated;
— zinc-5 % aluminium-mischmetal alloy coated;
— 55 % aluminium-zinc alloy coated;
— aluminium-silicon alloy coated.
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 1460, Metallic coatings — Hot dip galvanized coatings on ferrous materials — Gravimetric determination of the mass per unit area
ISO 6892-1, Metallic materials — Tensile testing — Part 1: Method of test at room temperature
ISO 16163, Continuously hot-dipped coated steel sheet products — Dimensional and shape tolerances
3 Terms, definitions and abbreviated terms
For the purposes of this document, the following terms, definitions and abbreviated terms 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 Terms and definitions
3.1.1 fabricator
<corrugated metal pipe> organization that produces the finished pipe
3.1.2 manufacturer
<corrugated metal pipe> organization that produces the metal sheet from which the pipe is made
3.1.3 purchaser
<corrugated metal pipe> person or agency that purchases the finished pipe
Note 1 to entry: For the purposes of this document, the fabricator (3.1.1) may also be considered as the purchaser of the sheet, where that term is used in this document. Such an interpretation does not restrict the purchaser of finished pipe from enforcing any provisions of this specification.
4 Condition of manufacture
4.1 Chemical composition
The chemical composition (heat analysis and product analysis) of the base metal shall conform to the requirements of Table 1.
6.2 Coating mass
The manufacturer shall conduct tests using methods deemed necessary to ensure that the material conforms with the requirements as given in Table 3. Commonly used methods include those given in ISO 1460, ISO 3497 or ISO 2178. Coating mass is determined by converting coating thickness measurements made with magnetic gauges (ISO 2178) or by X-ray spectrometry (ISO 3497) using the relationship given in Table 3. The test methods in ISO 2178 and ISO 3497 may be used as a basis for acceptance but not for rejection. In cases of dispute, ISO 1460 shall be used as the referee method.