KENYA  STANDARD  DKS  1948:  2023  
ICS 77.140.65   
  
 
 
 
 
 
 
 
 
 
 
 
 
 
Round strand galvanized steel wire  
ropes for  shipping  purposes  — 
Specification  
 
 
 
 
 
 
 
 
 
 
© KEBS  2023  Third  Edition,  2023© KEBS  2023  — All rights  reserved  iii  
  
TECHNICAL  COMMITTEE  REPRESENTATION  
 
The following  organizations  were  represented  on the Technical  Committee:  
 
Kenya  Industrial  Research  and Development  Institute  (KIRDI)   
Kenya Association of Maritime Practitioners (KMPA)  
Kwale County Beach Management Unit  
Kenya Ferry  Services  
Kenya  Ports  Authority  
Kenya  Maritime  Authority  
University of Nairobi — Mechanical Department  
Technical  University  of Mombasa  
Southern Engineering Company Ltd.  
African Mar ine and General Engineering   
TransAfrica  Maritime  Consultancy  Group   
Elite Tools  Ltd. 
Kenya  Bureau  of Standards — Secretariat  
 
 
 
 
REVISION  OF KENYA  STANDARDS  
 
In order to keep abreast of progress in industry, Kenya Standards shall be regularly reviewed.  Suggestions  for 
improvements to published standards, addressed to the Managing Director, Kenya Bureau of Standards,  are 
welcome.  
 
 
 
 
 
© Kenya  Bureau  of Standards,  2023  
 
Copyright. Users are reminded that by virtue of Section 25 of the Copyright Act, Cap. 130 of 2001 of the Laws of Kenya, copyright  subsists 
in all Kenya Standards and except as provided under Section 25 of this Act, no Kenya Standard produced by Kenya Bureau of  Standards 
may be reproduced, stored in a retrieval system in any form or transmit ted by any means without prior permission in writing  from the 
Managing  Director.  © KEBS  2023  — All rights  reserved  iii KENYA  STANDARD  DKS  1948:  2023  
ICS 77.140.65   
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Round  strand  galvanized  steel  wire ropes  for 
shipping  purposes  — Specification  
 
 
 
 
 
 
 
 
KENYA  BUREAU  OF STANDARDS (KEBS)  
 
Head  Office:  P.O. Box 54974, Nairobi -00200,  Tel.: (+254  020) 605490, 602350,  Fax: (+254  020) 604031  
E-Mail:  info@kebs.org,  Web:http://www.kebs.org  
 
Coast  Region  Lake  Region  Rift Valley  Region  
P.O. Box 99376,  Mombasa -80100  P.O. Box 2949,  Kisumu -40100  P.O. Box 2138,  Nakuru -20100  
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Fax: (+254  041) 229448  Fax: (+254  057) 21814   © KEBS  2023  — All rights  reserved  iii KENYA  STANDARD  DKS  1948:  2023  
ICS 77.140.65   
  
 
Foreword  
 
This Kenya Standard was prepared by the Ships and Marine Technology Technical Committee under the  
guidance of the Standards Projects Committee, and it is in accordance with the procedures of the Kenya  
Bureau  of Standards.  
 
The revision of this standard was necessitat ed by the entry of the cable car project at the Likoni channel to  
compliment the Ferry services. The wire ropes used in this project have to meet the minimum requirements  
specified in  this standard.  
 
This standard cancels and replaces KS 1948:2019,  Round strand galvanized steel wire ropes for shipping  
purposes — Specification  which  has been  technically revised.  
 
During  the preparation  of this standard,  reference was  made  to the following  document:  
 
IS 2581, Round  strand galvanized steel wir e ropes for shipping purposes -Specification  
Acknowledgement  is hereby  made  for the assistance  derived  from this source.  KENYA  STANDARD   DKS  1948:  2023  
ICS 77.140.65  
 
© KEBS  2023  — All rights  reserved  5  
  
 
 
 
 
Round  strand  galvanized  steel  wire ropes  for shipping  purposes  — 
Specification  
 
1 Scope  
 
This Kenya Standard covers galvanized round strand and multi -strand non -rotating steel wire ropes for  
standing and running rigging, hawsers, mooring and towing purposes, cargo gear rope, davit rope and life  boat 
fall ropes.  
The following rope constructions, types, rope grades , cores, size ranges as identified by X mark are covered.  
 
 
Table  1 — Rope  construction  requirements  
 
Class  Type  Tensile Designation of 
wire Core  Size 
range 
(mm)  Fig no  
1420  1570  Fiber  steel  
6 x 7(6/1)   
 
 
 
Round  
Strand    x x x - 8-26 1 
6 x 12(12/ fibre)  x x x - 8-40 2 
6 x 19 (12/6/1)  x x x - 8-48 3 
6 x 24(15/9/fibre)  x x x - 8-40 4a 
6 x 24 (12/12/fibre)  x x x - 8-40 4b 
6 x 37(18/12/6/1)  x x x - 12-56 5 
6 x 31(12/6&6/6/1)  -  x - 12-40 6a 
6 x 36(14/7&7/7/1)  - x x - 12-52 6b 
7 x 7(6/1)  x x - x 8-28 7 
7 x 19(12/6/1)  x x - x 14-52 8 
17 x 7 [11 x 7(6 -l): 
6x7(6 -l)] Multi  
round  
strand  
non-
rotating  - x x x 8-28 9 
18 x 7 [12 x 7(6 -l): 
6x7(6 -l)] - x x x 8-28 10 
34 x 7 [17 x 7(6 -1):11 
x 7(6 -1) /6 X 7(6 -1)] - x x x 12-40 11 
        
        
 
 
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 17893, Steel wire ropes — Vocabulary, designation and classification  
 
3 Terms  and definitions  
 
For the purpose  of this document,  the terms  and definitions  given  in KS ISO 17893  apply.  
 KENYA  STANDARD   DKS  1948:  2023  
ICS 77.140.65  
 
© KEBS  2023  — All rights  reserved  6  
 4 Rope Size  
 
The size of rope, designated, as ‘nominal diameter’, shall be one of those given in Tables 2 to 11.  
 
5 Minimum  breaking  load 
 
The minimum  breaking  load shall be as specified in  Tables  2 to 11.  
 
6 General  requirements  
 
6.1 Joints  
 
Tucked  joints  may be used  for wires  of 0.5  mm diameter  and smaller.  
 
6.2 Lay 
 
6.2.1  The lay of rope shall be right hand  ordinary  lay except  for the life boat fall ropes  which  may also be 
supplied in  right hand  lang’s lay.  
 
6.2.2  The length  of lay  of the  rope shall not be greater  than 10 times  its nominal  diameter.  
 
6.3 Mass  
 
The mass  of ropes  given  in Tables  2 to 11 are  for fully galvanized  ropes.  
 
6.4 Galvanizing  
 
6.4.1  Except  for the life boat,  falls and davit  ropes  and where  otherwise  agreed  to between  the 
manufacturer  and the purchaser,  galvanization  shall conform  to specification  given  in Annex  A. 
 
6.4.2  Procedure  for determination  of zinc deposition  on the wires  shall be as specified  in Annex B.  
 
7 Construction  and lubrication  
 
7.1 Unless  specifically  required  by the purchaser,  the ropes  shall be without  grease  externally.  
 
7.2 The rope shall be uniformly  made  and shall lie tightly  on the core or the underlying  strands.  When  
uncoiled and  under  no load,  the rope shall not be wavy.  
 
7.3 The core shall be of a size to provide  sufficient  support  to enable  the covering  strands  to be evenly  
laid. 
 
7.4 All strands  in a given layer  shall be of the same  construction  and lay. The  length  of lay of the strands  
in a rope shall not vary significantly.  DKS 1948:  2023  
© KEBS  2023  — All rights  reserved  3  
  
 
 
 
 
Figure  1 — 6x7(6/1)  construction  with fibre  core  (FC) 
 
 
Table  2 — Mass  and breaking  load of 6x7(6/1)  construction — Fibre  core  ropes  
Clauses 4, 5 and 6.3  
Nominal  diameter  
4 % 1 
 
(mm)  Approximate  mass   
 
 
(Kg/100m)  
Factor= 0.3578*d2 Minimum breaking load  corresponding  to 
tensile  designation of wires of  grade:  
1420  1570  
kN kN 
8 22.9 30 33 
9 28.9 38 42 
10 35.7 47 52 
11 43.2 57 63 
1 51.5 68 75 
14 70.1 92 102 
16 91.5 121 134 
18 116 153 169 
20 143 189 209 
21 158 208 230 
22 173 228 252 
24 206 272 300 
26 242 319 353 
NOTE: To obtain calculated aggregate breaking force multiply the values given in column 3 and 4 by 1.111.  
 
DKS 1948:  2023  
© KEBS  2023  — All rights  reserved  4  
  
 
 
 
    
 
Figure  2 — 6x12(12/fibre) construction  with fibre core  (FC) 
 
Table  3 — Mass  and breaking  load of 6x12(12/fibre) construction — Fibre  core  ropes  
 
 
Nominal  diameter  
4 % 1 
 
(mm)  Approximate  mass   
 
 
(Kg/100m)  
Factor= 0.251*d2 Minimum breaking load  corresponding  to 
tensile  designation of wires of  grade:  
1420  1570  
kN kN 
8 16.0 19 21 
9 20.3 24 27 
10 25.1 30 33 
11 30.3 36 40 
12 36.1 43 47 
14 49.1 58 64 
16 64.2 76 84 
18 81.2 96 106 
20 100 118 131 
NOTE: To obtain calculated aggregate breaking force multiply the values given in column 3 and 4 by 1.111.  
 
 
 
 
 
 
 
 
 
 
DKS 1948:  2023  
© KEBS  2023  — All rights  reserved  5  
  
 
 
 
Figure  3 — 6x19(12/6/1)) construction  with fibre core  (FC) 
 
Table  4 — Mass  and breaking  load of 6x19(12/6/1)) construction  — Fibre  core  ropes  
 
 
Nominal  
diameter  
4 % 
1 
(mm)  Approximate  
mass  
(Kg/100m)  
Factor=0.3453*d2 Minimum breaking  load 
corresponding  to 
tensile  designation of 
wires of  grade 1420  
(kN) Minimum breaking load  
corresponding  to tensile  
designation of wires of 
grade  1570  
(kN) 
8 22.1 28 31 
9 28.0 35 39 
10 34.6 44 48 
11 41.9 53 58 
12 49.8 63 69 
14 67.8 86 95 
16 86.6 112 124 
18 112 141 156 
20 138 175 193 
22 167 211 234 
24 199 251 278 
26 234 295 326 
28 271 342 378 
32 354 447 494 
36 448 566 625 
40 554 698 772 
44 670 845 934 
48 797 1005   1112   
NOTE: To obtain calculated aggregate breaking force multiply the values given in column 3 
and 4 by 1.163.  
DKS 1948:  2023  
© KEBS  2023  — All rights  reserved  6  
  
 
 
                                                 
 
 
Figure  4 (a)— 6x24(15/9/fibre)                                          Figure  4 (b)— 6x24(12/12/fibre)  
 
Figure  4 — 6x24 construction  with fibre core  (FC) 
 
 
Table  5 — Mass  and breaking  load of 6x24(15/9/fibre)  and 6x24 (12/12/fibre ) construction — 
Fibre  core  ropes  
 
Nominal  
diameter  
4 % 
1 
(mm)  Approximate  mass 
(Kg/100m)  
Factor=0.31875 *d2 Minimum breaking load  
corresponding  to 
tensile  designation of 
wires of  grade 1420  
(kN) Minimum breaking load  
corresponding  to tensile  
designation of wires of 
grade  1570  
(kN) 
8 20.4 25 28 
9 25.8 32 36 
10 31.8 40 44 
11 38.5 48 53 
12 45.8 57 63 
14 62.4 78 86 
16 81.5 102 113 
18 103 129 143 
20 127 159 176 
22 154 193 213 
24 183 229 253 
26 215 269 297 
28 250 312 345 
32 326 407 450 
36 413 516 570 
40 509 637 704 
NOTE: To obtain calculated aggregate breaking force multiply the value s given in column 3 and 
4 by 1.150 . 
DKS 1948:  2023  
© KEBS  2023  — All rights  reserved  7  
  
 
 
 
 
Figure 5  — 6x37(18/12/6/1)  construction  with fibre core  (FC) 
 
Table  6 — Mass  and breaking  load of 6x37(18/12/6/1) construction — Fibre core  ropes  
Nominal  diameter  
4 % 
1 
(mm)   
Approximate  
mass  
(kg/100m)  
Factor=0.34
57*d2 Minimum  breaking load  of wire rope  
corresponding  to tensile  designation  
of 
1420  
(kN) 1570  
(kN) 
8 22.1 27 30 
10 34.6 42 46 
12 49.8 60 67 
14 67.8 82 91 
16 88.6 107 118 
18 112 136 150 
20 138 167 185 
22 167 203 224 
24 199 241 267 
26 234 283 313 
28 271 328 363 
32 354 429 474 
36 448 543 600 
40 554 670 741 
44 670 810 896 
48 797 964 1066  
52 936 1132  1252  
56 1085  1313  1451  
NOTE — To obt ain calculated aggregate breakin g force multiply the values  given in column  3 
and 4 by 1.212.  
 
DKS 1948:  2023  
© KEBS  2023  — All rights  reserved  8  
  
 
 
 
 
 
 
Figure  6(a) — 6x31(12/6  and 6/6/1)  Figure 6(b) — 6x36  (14/7  and 7/7/1)  
 
Figure  6 — 6x31(12/6  and 6/6/1)  and 6x36  (14/7 and  7/7/1) construction  with fibre  core  (FC) 
 
Table 7 — Mass and breaking load of 6x31(12/6 and 6/6/1) and 6x36 (14/7 and 7/7/1)  
construction  — Fibre  core ropes  
 
 
 
Nominal  diameter  
4 % 
1 
(mm)  Approximate  mass  
(kg/100m)  
Factor=0.3799*d2 Minimum breaking  
load corresponding  
to tensile  
designation  of wires  
of 1570 
(kN) 
12 54.7 75 
14 74.5 102 
16 97.3 133 
18 123 168 
20 152 207 
22 184 251 
24 219 298 
26 257 350 
28 298 406 
32 389 530 
36 493 671 
40 608 829 
44 736 1003  
48 876 1193  
52 1028  1401  
NOTE —To ob tain calculated aggregate break ing force multiply the values 
given in col 3 and 4 by 1 .191 
DKS 1948:  2023  
© KEBS  2023  — All rights  reserved  9  
  
 
 
 
 
 
 
 
Figure  7 — 7x7(6/1)  construction  with steel core  (SC) 
 
Table  8 — Mass  and breaking  load of 7x7(6/1)  construction — Steel  core  ropes  
 
 
Nominal  diameter  
4 % 
1 
 
(mm)  Approximate  mass  
 
(kg/100m)  
Factor= 0.393*d2 Minimum breaking  
load corresponding  to 
tensile  designation  of 
wires  of 1420  
(kN) Minimum breaking  
load corresponding  to 
tensile  designation  of 
wires  of 1570  
(kN) 
8 25.2 33 36 
9 31.8 41 46 
10 39.3 51 56 
11 47.6 62 68 
12 56.6 73 81 
14 77.0 100 110 
16 101 130 144 
18 127 165 183 
20 157 203 225 
22 190 246 273 
24 226 293 324 
26 266 344 381 
28 308 399 442 
NOTE — To obtain calculated aggregate breaking force multiply the figures given in column 3 and 4 by 1.194.  
DKS 1948:  2023  
© KEBS  2023  — All rights  reserved  10  
  
 
 
 
 
 
Figure  8 — 6x19(12/6/1)  construction  with steel  core  (IWRC)  
 
Table  9 — Mass  and breaking  load of 6x19(12/6/1)  construction — Steel  core  ropes  
 
 
Nominal  diameter  
4 % 
1 
(mm)   
Approximate  
mass  
(kg/100m)  
Factor=0.38
05*d2 Minimum  breaking load  of wire rope  
corresponding  to tensile  designation  
of 
1420  
(kN) 1570  
(kN) 
 
14  
74.6  
92  
102 
16 97.4 121 134 
18 123 153 169 
20 152 189 208 
22 184 228 251 
24 219 271 300 
26 257 319 352 
28 298 369 408 
32 390 483 534 
36 493 611 675 
38 549 680 752 
40 609 754 834 
44 737 912 1009  
48 877 1006  1201  
52 1029  1274  1409  
NOTE —To obtain calculated aggregate breaking force multiply the values given in column 3 and 
4 by 1.250.  
DKS 1948:  2023  
© KEBS  2023  — All rights  reserved  11  
  
 
 
 
Figure  9a — 17x7 11 x7 (6/1): 6 x 7 (6 x 1)  construction  with fibre core (FC)  
  
Figure 9 b — 17x7 11 x7 (6/1): 6 x 7 (6 x 1) construction with steel core (S C)  
 
Figure  10a — 18x7 12 x7 (6/1): 6 x 7 (6 x 1)  construction  with fibre core (FC)  
DKS 1948:  2023  
© KEBS  2023  — All rights  reserved  12  
  
Figure 10b — 18x7 12 x7 (6/1): 6 x 7 (6 x 1) construction with steel core (S C)  
 
 
Table  10 — Mass  and breaking  load of 17x7(6/1)or 18 x7  construction  Fibre   and steel core  
ropes  
 
 
 
Nominal  
diameter  
4 % 
1 
(mm)   
 
Approximate  mass  
 
 
 (kg/100m)   
Minimum Breaking  load 
corresponding  to tensile  Designation  
of wires           of 1570  
 
(kN) 
Fibre core (0.383)  Steel core(0.402)  Fibre core  Steel core  
8 24.5 25.7 32 33 
9 31.0 32.6 41 42 
10 38.3 40.2 50 52 
11 46.3 48.6 61 62 
12 55.1 57.9 72 74 
13 64.7 67.9 85 87 
14 75.0 78.8 98 101 
16 98.0 103 128 132 
18 124 130 162 167 
20 153 161 200 206 
22 185 195 242 249 
24 220 232 288 297 
26 259 272 338 348 
28 300 315 392 404 
NOTE — To obtain calculated aggregate breaking force multiply the values given in column 4 by 1.282 and 
column 5 by 1.319  
DKS 1948:  2023  
© KEBS  2023  — All rights  reserved  13  
  
 
 
 
  
 
Figure  11a — 34x7(6/1)  construction  with fibre core (FC)  
 
 
 
Figure  11b — 34x7(6/1)  construction  with steel core (SC)  
 
 
 
 
 
 
 
 
 
 
 
 
DKS 1948:  2023  
© KEBS  2023  — All rights  reserved  14  
 Table  11 — Mass  and breaking  load of 34x7(6/1)  construction  — Fibre and steel core  ropes  
 
 
Nominal  
diameter  
4 % 
1 
(mm)   
 
Approximate  mass  
 
 (kg/100m)  Minimum breaking  load 
corresponding  to tensile  designation  
of wires  of 1420  
 
(kN) 
 Fibre Core (0.390)  Steel core (0.402)  Fibre core  Steel core  
12 56.2 57.9 71 72 
13 65.9 67.9 83 84 
14 76.5 78.8 96 98 
16 99.9 103 125 128 
18 126 130 159 162 
20 156 161 196 200 
22 189 195 237 242 
24 225 232 282 288 
26 264 272 331 338 
28 306 315 384 392 
32 400 412 502 512 
36 506 521 635 648 
40 624 643 784 800 
NOTE — To obtain calculated aggregate breaking force multiply the values given in column 4 by 1.333 and 
column 5 by 1.346.  DKS 1948:  2023  
© KEBS  2023  — All rights  reserved  15  
  
 
 
8 Mechanical  tests  
 
8.1 Tensile  test 
 
8.1.1  The test consists  of straining  a test piece  by tensile  stress,  generally  to fracture, with view  to 
determining one  or more  of the  mechanical  properties  namely:  
 
(i) Maximum breaking  load 
 
 
(ii) Tensile  strength  =  
 
Maximum load   
Original  cross  - sectional  area 
 
 
(iii) Percentage elongation  after fracture  = Length  at fracture - Original  length  
Original  length  
 
8.1.2  Inspection  of wire ropes  
 
8.1.2.1  When specified by the purchaser, inspection and testing of completed wire ropes and wires from a  
completed rope shall be carried out at the factory of the rope manufacturer unless otherwise agreed upon by  
the manufacturer and  the purchaser.  
 
8.1.2.2  The manufacturer shall supply all the necessary test samples, machinery, apparatus and the labour  
required  for inspection  and testing  at his factory.  
 
8.1.2.3  All the tests  shall be carried  out under  the direction  of the  purchaser  or his representatives.  
8.1.2.4  In instances where the end user is not the purchaser, the purchaser shall avail all necessary certified 
documents from a competent third party inspector.  
 
7.2 Test sample  
 
7.2.1  The cross  section  of the test piece  shall be that of the wire.  
 
7.2.2  As proportional test pieces are not generally appropriate for tests on wire, the minimum gauge length  
shall be  350 mm. 
 
7.2.3  The distance  between  grips  should  be at least  50 mm greater  than the gauge  length  unless  otherwise  
stated.  
 
7.2.4  If possible, the test piece should not be straightened before testing.   If straightening is necessary,  this 
should b e done by hand if practicable, but otherwise a hammer with wood, plastic head or other suitable  
material  should  be used,  the wire  being  supported on  a flat surface  of wood  or other.  
 
7.3 Method  of gripping  
 
7.3.1  Test pieces  should  be held by wedge  grips  having  serrations which  will produce  the minimum  depth  
of notch  in the wire commensurate  with effective  grip. 
 
7.3.2  Soft metal  inserts may  be used with very  sensitive  materials.  DKS 1948:  2023  
© KEBS  2023  — All rights  reserved  16  
  
7.3.3  All efforts should be made to ensure that test pieces are held in such a way that the load is supplied  
as axially  as possible.  This is  of particular  importance  when  testing  brittle  material  or when  determining  proof  
stress  or yield stress.  
 
9 Inspection by  sampling for  wire ropes  
 
9.1 Sampling  
 
The numbers  of samples  ‘n’ in relation  to the batch  size ‘N’ shall be determined  from Table  12. If the number  
of samples selected in this way is less than the number of production lengths, then the sample size shall be  
the number of  production  lengths.  
 
9.2 Conformity  
 
The batch  conforms  if all the tests  give a satisfactory  result.  
 
If one or more of the samples fail, a retest on the same coils (reels) shall be made.  The batch meets the  
requirements  of this standard  if the retest  gives a  satisfactory  result.  
 
If the result is unsatisfactory, the coil (reels) from which the result has been taken shall be rejected and, if the  
batch size is greater than three, additional tests on samples from other coils (reels) of the batch shall be  made 
in accordance with the third column of Table 12.  The batch con forms if all additional tests are  satisfactory.  
 
If one or more of the additional tests give an unsatisfactory result, all coils (reels) of the batch shall be tested  
and all  coils (reels) failing  shall be rejected.  
 
Table 12  — Number  of samples  
 
Batch  size 
N Number  of samples  
n Number  of samples  
for the additional  test 
1 1 – 
2 2 – 
3 3 – 
4 3 1 
5 3 2 
6 to 15  3 3 
16 to 25  4 4 
26 to 40  5 5 
41 to 65  7 7 
66 to 110  10 10 
111 to 180 15 15 
181 to 300 20 20 DKS 1948:  2023  
© KEBS  2023  — All rights  reserved  17  
  
 
10 Certificates  
 
10.1 Certificate  of conformance  
 
This will acknowledge,  if required,  the conditions  specified  in the purchase  order.  (An  example  of a 
certificate  of conformance  is given  in Annex D. ) 
 
10.2 Full works  certificate  
 
This shall give the results  of the  tests  requested  by the purchaser  in his order.  It shall be supplied  on 
request.  (An example  of a full works certificate  is given  in Annex  E) 
 
10.3 Certificate  of acceptance  
 
This shall be used when tests are carried out in the presence of the purchaser or his representative after  
manufacture,  or in a laboratory  designated  by the purchaser.  (An example  of a certificate  of acceptance  is 
given in  Annex E).  
 
11 Packaging  
 
11.1 Ropes  shall be supplied in  coils or on reels  at the  discretion  of the  manufacturer.  
 
11.2 The purchaser  should  specify  any particular  packaging requirements.  
 
11.3 Rotation  resistant  ropes  shall be  supplied  on reels.  
 
12 Marking  and labelling  
 
12.1 Marking  
 
The following information  shall be marked  on the rope:  
 
a) Manufacturer’s  name  and address;  
b) Length  and rope designation;  and 
c) Certificate  number from manufacturer,  if appropriate;  
d) Batch  number;  
e) Country  of origin.  
 
12.2 Labelling  
 
The above  information  shall be legibly  and durably  marked  on a tag attached  to each  coil or a plate  attached  
to each  reel of rope.  
 
 
 
 DKS 1948:  2023  
© KEBS  2023  — All rights  reserved  18  
  
Annex  A 
(normative)  
 
Mass  of zinc deposition  and number of  immersions  per minute  
 
Table  A.1 — Galvanized  wire –Tensile  designations  1230,  1420,  1570  and 1770  
 
Diameter  of wire  
(mm)   
Minimum mass  
of zinc (g/m2) From  
(inclusive)  To 
(exclusive)  
0.40 0.50 75 
0.50 0.60 90 
0.60 0.80 110 
0.80 1.00 130 
1.0 1.20 150 
1.20 1.50 165 
1.50 1.90 180 
1.90 2.50 205 
2.50 3.20 230 
3.20 3.70 250 
3.70 4.25 260 
4.25 5.00 275 DKS 1948:  2023  
© KEBS  2023  — All rights  reserved  19  
  
Annex  B 
(normative)  
 
Testing  for zinc  coating — Antimony  chloride  method  
 
B.1 Test solution shall be prepared by dissolving 32 g of antimony trichloride (sbCl 3) in 1000 ml of  
concentrated hydrochloric acid (sp gr 1.16).  Immediately before the test, the stripping solution shall be  
prepared by adding  5 ml of the solution prepared abov e, to 100 ml of concentrated hydrochloric acid (sp gr  
1.16)  then mix well.  
 
B.2 Test piece  of galvanized wire  may be of any  length  over 300 mm but preferably  600 mm. 
 
B.3 Weigh the clean test piece to 0.01 g.  When the test piece is too long for the container, it shall be  either 
bent or coiled to permit complete immersion in the test solution.  When the evolution of hydrogen  ceases or a 
few bubbles are being evolved, take out the test piece, wash in running water, wipe off well with  clean  soft 
cotton  cloth,  fully dry and weigh  again  to within  the nearest  0.01 g. 
 
B.4 Then measure the diameter to 0.01 mm at two places at right angles to each other of the same  location 
to obtain  the average  value.  Calculate  the mass of  coating in  g/m2 as follows:  
 
M =  m1  m2 
m2 x d x 1965  
 
 
Where  
 
M is the mass  of zinc  coating in  g/m2 of surface;  
 
m1 is the Original  mass  in g of the  test piece;  
 
m2 is the mass  in g of the  stripped  test piece; and  
 
d is the diameter  of the  stripped  test piece  in mm. DKS 1948:  2023  
© KEBS  2023  — All rights  reserved  20  
  
Annex  C 
(normative)  
 
Information to be provided by the purchaser when making an enquiry or placing an  
order  
 
The following information shall be provided by the purchaser when making an enquiry or placing an order for  
the wire  ropes:  
 
a) quantity  and length;  
 
b) nominal  diameter;  
 
c) rope class  or construction;  
 
d) core type;  
 
e) wire finish;  
 
f) lay direction  and type;  
 
g) rope grade;  
 
h) any particular  marking  requirements;  
 
i) any particular  packaging;  and 
 
j) minimum  breaking  force  required.  DKS 1948:  2023  
© KEBS  2023  — All rights  reserved  21  
  
Annex  D 
(normative)  
 
Example  of a certificate  of conformance  for wire ropes  certificate  of conformance  
 
Test certificate  No        
Customer’s  order  No       
Reel No      
 
Purchaser  
Name   
Address    
 
Rope  supplier  
Name   
Address     
 
Rope  maker  
Name   
Address      
 
Characteristics  
Nominal  length   m 
Nominal  rope diameter  mm 
 
Construction  
No. of strands    
Class     
 
Lay’ 
Type   
Direction     
 
Tensile  grade   N/mm2 
Wire finish      
Type  of core      
Preformed  Yes/No*  
Lubricated  Yes/No*  
Minimum  breaking  force  KN 
Was actual  breaking  force  test carried  out? Yes/No.  
 
Approximate  unit mass     
Standard(s)  (if applicable)  
 
Additional  information     
 
 
I certify  on behalf of the  company  named  above  that the above  particulars are  correct.  
 
Signature:   Position  held:     
 
 
* Delete whichever is  not applicable  DKS 1948:  2023  
© KEBS  2023  — All rights  reserved  22  
  
Annex  E 
(normative)  
 
Example  of a full  works  certificate  of acceptance for  wire ropes  
 
Full works  certificate  or certificate  of acceptance  
 
Manufacturer    
Purchaser    
Order  Number     
Nominal  Diameter  mm 
Actual  diameter  of rope  mm 
Length  m 
Class      
 
Lay 
Type    
Direction     
 
Tensile  grade  of wire N/mm2    
Surface  finish  of the wires      
Actual  breaking  force  KN 
Coil/reel  No      
 
Number  
of wires  Nominal wire  
diameter,  mm Measured  
diameter  of 
wire,  mm Breaking  
force,  KN Tensile  
strength  
N/mm2 Number  
of 
Bends  Number  
of 
torsions  
       
 
 
It is certified  that this rope  conforms  to standard  
 
 
 
 
Place,  date Signature  (stamp)