GB 8903-2024 English PDF (GB8903-2024)

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GB 8903-2024: Steel wire ropes for lifts
GB 8903-2024. Steel wire ropes for elevators
National Standards of People's Republic of China
ICS 77.140.65CCS H 49
Elevator wire rope
2024-06-25 Release
2024-09-25 Implementation
State Administration for Market Regulation
The National Standardization Administration issued
Replace GB/T 8903-2018
Table of Contents
Preface·...
1 Scope·...
2 Normative referenced documents·...
3 Terms and Definitions·...
4 Classification and Labeling·...
5 Ordering contents·...
6 Technical requirements·...
7 Verification requirements and test methods·...
8 Sampling and Acceptance Rules·...
9 Usage Information and Labels·...
Appendix A (Normative) Table of minimum breaking force values of steel wire ropes of common categories, diameters and tensile strength grades...·····13
Appendix B (Normative) Calculation of Minimum Breaking Force of Wire Rope·...
Appendix C (Informative) Reference weight per unit length of wire rope, nominal metal cross-sectional area and approximate diameter of outer steel wire...···28
Appendix D (Normative) Determination method of elongation of steel wire rope·...
Appendix E (Informative) Information on selection, storage, transportation, installation and maintenance of steel wire ropes for elevators·...
Appendix F (Informative) Replacement and scrapping conditions for elevator wire ropes·...
Preface
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents"
Drafting is required.
This document replaces GB/T 8903-2018 "Steel Wire Ropes for Elevators". Compared with GB/T 8903-2018, except for structural adjustments and editorial
In addition to the modifications, the main technical changes are as follows.
--Added steel wire strength grade requirements (see 6.1.1);
--Added new varieties of steel-based composite core and solid polymer core (SPC) wire ropes including polymer coated steel core (EPIWRC)
(see 6.1.2);
--Changed the range of natural fiber core oil content, and refined the synthetic fiber core oil content and strand oil content according to the purpose of use.
Distinction (see 6.1.2, 5.1.2 of the.2018 edition);
--Added diameter deviation categories for steel core wire ropes (see 6.3.1);
--Changed the technical requirements for split wire (see 6.6, 5.2.12 of the.2018 edition);
--Changed the elastic elongation index of wire rope (see 6.7, 5.2.13 of the.2018 edition);
--Deleted the fatigue life test requirements (see 5.2.14 of the.2018 edition);
--Added the requirements for the measured unit length weight of suspension wire ropes and compensating wire ropes (see 6.8);
-- Changed the sampling and acceptance rules (see Chapter 8, Chapter 8 of the.2018 edition);
--Changed the diameter range of suspension wire rope (see Appendix A, Appendix A of the.2018 edition);
--Added reference weight of synthetic fiber core wire rope (see Appendix A);
--Added 3 new types of wire rope structures (see Table A.9 to Table A.11).
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document is proposed and coordinated by the Ministry of Industry and Information Technology of the People's Republic of China.
This document was first published in 1988 as GB 8903-1988, first revised in.2005 as GB/T 8903-2005, and
This is the second revision and the third revision.
Elevator wire rope
1 Scope
This document specifies the classification and marking of carbon steel smooth or coated elevator wire ropes of different structures with nominal diameters of 6 mm to 38 mm.
record, ordering content, technical requirements, verification requirements and test methods, sampling and acceptance rules, and usage information and identification.
This document applies to suspension ropes for traction drive, hydraulic drive and forced drive elevators, and also to passenger ropes running between guide rails.
Compensation wire ropes and speed limiter wire ropes for elevators, freight elevators and utility elevators.
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to
This document.
GB/T 228.1 Tensile test of metallic materials Part 1.Room temperature test method
GB/T 238 Metallic wire repeated bending test method
GB/T 1839 Test methods for quality of zinc coating on steel products
GB/T 2104 General provisions for packaging, marking and quality certification of steel wire ropes
GB/T 8358 Method for determination of breaking force of steel wire rope
GB/T 8706 Terminology, marking and classification of wire ropes
GB/T 15030 Sisal steel wire rope core
GB/T 21965 Steel Wire Rope Acceptance and Defect Terminology
NB/SH/T 0387 Lubricants for wire ropes
YB/T 081 Rounding off of numerical values in metallurgical technical standards and determination of test values
YB/T 4182 Determination of oil content of wire rope
YB/T 4452-2015 Steel wire rope fiber core
YB/T 5198 Steel wire for elevator wire rope
YB/T 5343 Round steel wire for rope making
3 Terms and definitions
The terms and definitions defined in GB/T 8706 and the following apply to this document.
3.1
Single tensile rope
A wire rope in which the outer wires and inner wires of the outer strands have the same tensile strength grade (except for the center wire and filler wires).
3.2
Dual tensile rope
A wire rope in which the outer wires and inner wires of the outer strands have different tensile strength grades (except for the center wire and filler wires).
Example. 1370/1770 grade, the outer layer of the outer strand has an outer wire tensile strength grade of 1370 and the inner wire tensile strength grade of 1770.