ISO 19427:2019 Steel wire ropes – Pre-fabricated parallel wire strands for suspension bridge main cable一Specifications.
This document specifies the production methods, specifications, requirements, test methods, inspection rules, marks, packing, transportation and storage for pre-fabricated parallel wire strand (PPWS), which are made of hot-dip galvanized or zinc-aluminium coated high tensile steel wires described in Iso 19203.
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 148-1, Metallic materials — Charpy pendulum impact test — Part 1: Test method
ISO 4986, Steel casting — Magnetic particle inspection
ISO 4992-2, Steel castings — Ultrasonic examination — Part2: Steel castingsfor highly stressed components
ISO 6892-1, Metallic materials — Tensile testing — Part 1: Method of test at room temperature
ISO 10474:20 13, Steel and steel products — Inspection documents
ISO 17558:2006, Steel wire ropes — Socketing procedures — Molten metal and resin socketing
ISO 19203, Steel wire rod and wire products — Hot-dip galvanized and zinc-aluminium coated steel wires for bridge cables — Specifications
EN 1774, Zinc and zinc alloys — Alloys for foundry purposes — Ingot and liquid
3 Terms and definitions
For the purposes of this document, the following terms and detinitions apply.
ISO and IEC maintain term inological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.urg/obp
— IEC Electropedia: available at http://www.electropedia.org/
pre-fabricated parallel wire strand PPws
strand factory pre-fabricated by assembling a group of wires laid parallel in a hexagonal (regular or irregular) shape, bound together at intervals by binding tape, and fitted with sockets (3.3) at each end
Note 1 to entry: The section and the structure of PPWS is shown in Figure 1.
3.12
unstressed length
length which corresponds to the actual length without load supplied using a prescribed method
3.13
free length
cable length excluding socket (3.3) lengths, which is the length between the front faces of sockets Note ito entry: It is expressed in rn.
3.14
gauge wire
wire used to control the length of the PPWS (3.1) during manufacturing, which is measured and marked under specific marking load while temperature is uniform.ISO 19427 pdf download.