BS ISO 19427:2019 pdf download – Steel wire ropes — Pre-fabricated parallel wire strands for suspension bridge main cable — 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 — Part 2: Steel castings for highly stressed components ISO 6892-1, Metallic materials — Tensile testing — Part 1: Method of test at room temperature ISO 10474:2013, 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 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 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. 3.2 binding tape plastic tape reinforced by plastic fibres Note 1 to entry: The tapes are bound at intervals to keep the shape of strand tight and can permit the wires to open or spread sufficiently to adjust the stresses in the strand during reeling and unreeling. 3.3 socket PPWS (3.1) termination incorporating a socket basket (3.5), see Figure 2 Note 1 to entry: Length adjusting system shall be provided at...
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