General Information

Abstract

This document specifies requirements for 3-strand hawser-laid and 4-strand shroud-laid ropes, 8-strand braided ropes and 12-strand braided ropes for general service made of polypropylene, and gives rules for their designation.
This document does not cover all variations in strength or product performance. The rope manufacturer is consulted to ensure the intended design meets the requirements of the application.

Status
Published
Publication Date
04-May-2021
Withdrawal Date
29-Nov-2021
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Start Date
05-May-2021
Completion Date
05-May-2021

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Overview

EN ISO 1346:2021 (ISO 1346:2021) sets standardized requirements for polypropylene fibre ropes used in general service. It covers ropes made from PP2 (split film, monofilament and multifilament polypropylene) and PP3 (polypropylene high-tenacity multifilament) in the following constructions: 3‑strand hawser‑laid (type A), 4‑strand shroud‑laid (type B), 8‑strand braided (type L) and 12‑strand braided (type T). The standard defines designation rules, physical property requirements (linear density and minimum breaking strength), marking and protection (e.g., UV protection), and references test methods.

Key topics and technical requirements

  • Scope and application: Applies to general‑service polypropylene ropes; it explicitly states it does not cover every possible performance variation and advises consultation with the manufacturer to ensure suitability for specific uses.
  • Constructions covered: Types A, B, L and T (3-, 4-, 8- and 12-strand) with drawings and definitions for lay/shape.
  • Designation rules: Specifies how to label a rope (e.g., “Fibre rope ISO 1346 – L – 60 – PP2 protected (UV)”), including rope type, reference number and material (PP2 or PP3).
  • Physical properties:
    • Linear density given in kilotex (ktex) under reference tension and measured per ISO 2307.
    • Minimum breaking strength (MBS) listed for new dry and wet ropes in tabulated form; MBS is a manufacturer‑set value determined using recognized statistical methods (see ISO 9554 Annex D).
    • Tables relate reference numbers to approximate diameters, linear density tolerances and MBS for unspliced and eye‑spliced terminations.
  • General requirements: Manufacture, lay, labelling, packaging and delivery lengths follow ISO 9554.
  • Marking and protection: Ropes must be marked and fibres protected against sunlight (UV) as indicated.

Applications and who uses this standard

  • Target users: Rope manufacturers, quality managers, procurement specialists, maritime and offshore operators, fishing and aquaculture businesses, logistics and lifting equipment suppliers, and standards/conformity assessors.
  • Typical uses: General‑purpose mooring, towing, fender lines, buoy tethering, fishing gear, lashing and many industrial or leisure applications where polypropylene ropes are chosen for light weight, flotation and chemical resistance.
  • Why use EN ISO 1346:2021: To ensure consistent specification, testing and labelling of polypropylene ropes (PP2/PP3), to compare products across suppliers, and to document minimum breaking strengths and linear density for design and safety decisions.

Related standards

  • ISO 2307 - Determination of certain physical and mechanical properties of fibre ropes (testing method referenced).
  • ISO 9554 - General specifications for fibre ropes (construction, labelling, packaging).
  • ISO 1968 - Fibre ropes vocabulary (terms and definitions).

Keywords: EN ISO 1346:2021, polypropylene ropes, fibre ropes, PP2, PP3, 3‑strand, 4‑strand, 8‑strand, 12‑strand, minimum breaking strength, linear density, ISO 2307, ISO 9554.

Relations

Effective Date
12-May-2021
Effective Date
25-Aug-2026
Effective Date
25-Aug-2026
Effective Date
25-Aug-2026
Effective Date
28-Jan-2026
Effective Date
09-Feb-2026
Effective Date
28-Jan-2026
Effective Date
28-Jan-2026
Effective Date
28-Jan-2026
Effective Date
28-Jan-2026
Effective Date
28-Jan-2026
Effective Date
28-Jan-2026
Effective Date
28-Jan-2026
Effective Date
28-Jan-2026
Effective Date
12-Feb-2026

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Frequently Asked Questions

EN ISO 1346:2021 is a standard published by the European Committee for Standardization (CEN). Its full title is "Fibre ropes - Polypropylene split film, monofilament and multifilament (PP2) and polypropylene high-tenacity multifilament (PP3) - 3-, 4-, 8- and 12-strand ropes (ISO 1346:2021)". This standard covers: This document specifies requirements for 3-strand hawser-laid and 4-strand shroud-laid ropes, 8-strand braided ropes and 12-strand braided ropes for general service made of polypropylene, and gives rules for their designation. This document does not cover all variations in strength or product performance. The rope manufacturer is consulted to ensure the intended design meets the requirements of the application.

This document specifies requirements for 3-strand hawser-laid and 4-strand shroud-laid ropes, 8-strand braided ropes and 12-strand braided ropes for general service made of polypropylene, and gives rules for their designation. This document does not cover all variations in strength or product performance. The rope manufacturer is consulted to ensure the intended design meets the requirements of the application.

EN ISO 1346:2021 is classified under the following ICS (International Classification for Standards) categories: 59.080.50 - Ropes. The ICS classification helps identify the subject area and facilitates finding related standards.

EN ISO 1346:2021 has the following relationships with other standards: It is inter standard links to EN ISO 1346:2012, ISO 9554:2019, ISO 1968:2004, ISO 2307:2019, EN 12312-3:2017+A1:2020, EN 50528:2024, EN 15272-1:2007, EN 14504:2019, EN 13573:2009, EN 15272-3:2007, EN 13814:2004, EN 14504:2016, EN 14504:2024, EN 1492-4:2004+A1:2008, ISO 1346:2021. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

EN ISO 1346:2021 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.

Standards Content (Sample)


SLOVENSKI STANDARD
01-julij-2021
Nadomešča:
SIST EN ISO 1346:2012
Vlaknene vrvi - Polipropilenske fibrilirane folijske monofilamentne in
multifilamentne (PP2) ter polipropilenske visokotrdne multifilamentne (PP3) - 3-, 4
-, 8- in 12-pramenske vrvi (ISO 1346:2021)
Fibre ropes - Polypropylene split film, monofilament and multifilament (PP2) and
polypropylene high-tenacity multifilament (PP3) - 3-, 4-, 8- and 12-strand ropes (ISO
1346:2021)
Faserseile - Polypropylen-Splitfilm, Monofilament und Multifilament (PP2) und
hochfestes Polypropylen-Multifilament (PP3) - 3-, 4-, 8- und 12-litzige Seile (ISO
1346:2021)
Cordages en fibres - Film fibrillé, monofilament et multifilament de polypropylène (PP2)
et multifilament de polypropylène haute ténacité (PP3) - Cordages à 3, 4, 8 et 12 torons
(ISO 1346:2021)
Ta slovenski standard je istoveten z: EN ISO 1346:2021
ICS:
59.080.50 Vrvi Ropes
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 1346
EUROPEAN STANDARD
NORME EUROPÉENNE
May 2021
EUROPÄISCHE NORM
ICS 59.080.50 Supersedes EN ISO 1346:2012
English Version
Fibre ropes - Polypropylene split film, monofilament and
multifilament (PP2) and polypropylene high-tenacity
multifilament (PP3) - 3-, 4-, 8- and 12-strand ropes (ISO
1346:2021)
Cordages en fibres - Film fibrillé, monofilament et Faserseile - Polypropylen-Splitfilm, Monofilament und
multifilament de polypropylène (PP2) et multifilament Multifilament (PP2) und hochfestes Polypropylen-
de polypropylène haute ténacité (PP3) - Cordages à 3, Multifilament (PP3) - 3-, 4-, 8- und 12-litzige Seile (ISO
4, 8 et 12 torons (ISO 1346:2021) 1346:2021)
This European Standard was approved by CEN on 22 April 2021.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 1346:2021 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 1346:2021) has been prepared by Technical Committee ISO/TC 38 "Textiles" in
collaboration with Technical Committee CEN/TC 248 “Textiles and textile products” the secretariat of
which is held by BSI.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by November 2021, and conflicting national standards
shall be withdrawn at the latest by November 2021.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 1346:2012.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 1346:2021 has been approved by CEN as EN ISO 1346:2021 without any modification.

INTERNATIONAL ISO
STANDARD 1346
Fifth edition
2021-04
Fibre ropes — Polypropylene split
film, monofilament and multifilament
(PP2) and polypropylene high-tenacity
multifilament (PP3) — 3-, 4-, 8- and
12-strand ropes
Cordages en fibres — Film fibrillé, monofilament et multifilament de
polypropylène (PP2) et multifilament de polypropylène haute ténacité
(PP3) — Cordages à 3, 4, 8 et 12 torons
Reference number
ISO 1346:2021(E)
©
ISO 2021
ISO 1346:2021(E)
© ISO 2021
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
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2021 – All rights reserved

ISO 1346:2021(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Designation . 1
5 General requirements . 2
6 Physical properties . 3
7 Marking . 7
ISO 1346:2021(E)
Foreword
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bodies (ISO member bodies). The work of preparing International Standards is normally carried out
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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).
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