1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA
2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any
3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ISBN 978-0-626-23831-5 SANS 6805:2009Edition 1ISO 6805:1994Edition 2SOUTH AFRICAN NATIONAL STANDARD Rubber hoses and hose assemblies for underground mini
4、ng Wire-reinforced hydraulic types for coal mining Specification This national standard is the identical implementation of ISO 6805:1994 and is adopted with the permission of the International Organization for Standardization. Published by SABS Standards Division 1 Dr Lategan Road Groenkloof Private
5、 Bag X191 Pretoria 0001Tel: +27 12 428 7911 Fax: +27 12 344 1568 www.sabs.co.za SABS SANS 6805:2009 Edition 1 ISO 6805:1994 Edition 2 Table of changes Change No. Date Scope National foreword This South African standard was approved by National Committee SABS TC 45, Rubber and rubber products, in acc
6、ordance with the SABS Standards Division, in compliance with annex 3 of the WTO/TBT agreement. This SANS document was published in December 2009. INTERNATIONAL STANDARD Second edition 1994-l o-01 Rubber hoses and hose assemblies for underground mining - Wire-reinforced hydraulic types for coal minin
7、g - Specification Tuyaux et flexibles en caoutchouc pour /es mines souterraines - Types hydrauliques avec armure de fils mr of finished Bore diameter Nominal bore min. max. min. max. min. max. 5 4,5 5,4 IO,6 II,7 15,l 16,7 6,3 61 70 12,l 13,3 16,7 18,3 10 913 IO,1 16,l 17,3 20,6 22,2 12,5 12,3 13,5
8、19,o 20,6 23,8 25,4 16 15,4 16,7 22,2 23,8 27,0 28,6 19 18,6 19,8 26,2 27,8 31,0 32,6 25 25,0 26,4 34,l 35,7 38,5 40,9 31,5 31,3 33,0 43,3 45,7 49,2 52,4 38 37,7 39,3 49,6 52,0 55,6 58,8 51 50,4 52,0 62,3 64,7 68,2 71,4 Table 3 - Hose dimensions: type 2 Dimensions in millimetres Bore diameter Diamet
9、er over outer wire braid Outside diameter of finished / hose Nominal bore 16 15,6 16,l 24,0 25,0 29,2 30,5 19 18,8 19,3 27,8 28,8 33,0 34,3 25 25,0 25,8 34,7 36,0 39,9 41,4 31,5 31,4 32,l 40,8 42,0 46,7 48,3 Table 4 - Hose dimensions: type 3 Outside diameter of finished hose Dimensions in millimetre
10、s 1 Bore diameter Diameter over outer wire ply Nominal bore min. max. min. 62 93 12,3 15,5 18,6 25,0 31,4 37,7 50,4 min. 17,l 20,6 23,8 27,4 33,0 38,5 49,2 55,6 68,2 max. 7,O IO,1 13,5 16,7 19,8 26,4 33,0 39,3 52,0 max. 18,7 22,2 25,4 29,0 33,4 40,9 52,4 58,8 71,4 6,3 10 12,5 16 19 25 31,5 38 51 14,
11、l 16,9 19,4 23,0 27,4 34,5 45,0 51,4 64,3 15,3 18,l 21,0 24,6 29,0 36,l 47,0 53,4 67,3 SANS 6805:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .IS0 6805: 1994(E) 0 IS0 Table 5 - Hose dimensions: type 4 Dimensions in millimetres Nominal b
12、ore Bore diameter Diameter over outer wire braid Outside diameter of finished hose min. max. min. max. min. max. 12,5 12,4 13,0 20,6 21,6 25,8 27,l 19 18,8 19,3 27,8 28,8 33,0 34,3 25 25,0 25,8 34,7 36,0 39,9 41,4 31,5 31,4 32,l 40,8 42,0 46,7 48,3 38 37,8 39,0 47,4 48,7 53,3 54,9 51 50,5 51,7 60,l
13、61,3 66,O 67,6 Table 6 - Hose dimensions: type 5 Dimensions in millimetres Nominal bore Bore diameter Diameter over outer wire ply Outside diameter of finished hose I 12,5 19 25 31,5 38 51 min. max. min. max. min. max. 12,3 13,5 21,8 23,4 24,E 26,2 18,6 19,8 27,6 29,2 31,4 33,0 25,0 26,4 34,4 36,0 3
14、7,5 39,9 31,4 33,0 40,9 42,9 43,9 47,l 37,7 39,3 47,8 49,8 51,9 55,l 50,4 52,0 62,2 64,2 66,5 69,7 Table 7 - Hose dimensions: type 6 Dimensions in millimetres Nominal bore Bore diameter Diameter over outer wire ply Outside diameter of finished hose 19 18,6 19,8 28,2 25 25,0 26,4 34,9 31,5 31,4 33,0
15、45,6 38 37,7 39,3 53,l 51 50,4 52,0 66,9 min. max. min. max. 33,2 39,8 51,3 58,8 72,7 SANS 6805:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .0 IS0 IS0 6805:1994(E) Pressure requirements 6 61 shal The maximum working pressure of the hos
16、e comply with the requirements of table8. 62 . The hoses shall withstand without damage or r I Tarlure a proof test pressure of twice the maximum working pressure given in table8 and maintained by the method described in IS0 1402. 7 Minimum bend radius and change in length at maximum working pressur
17、e 7.1 The hose shall be capable of performing at maximum working pressure when curved to a radius not smaller than that given in tableg. NOTE 2 Should any portion of the hose be curved to a radius smaller than the specified bend radius, the perform- ance capability of the hose is reduced. 6.3 The ho
18、ses shall be capable of achieving a mini- mum burst pressure of four times the maximum working pressure given in table8, when tested in ac- cordance with the burst pressure test described in IS0 1402. change-in-length test described in IS0 1402. 7.2 The change in length at the maximum working pressu
19、re shall not be greater than Tz % for all ( 1 types, when measured in accordance with the Table 8 - Maximum working pressure Maximum working pressure Nominal bore Type 1 Type 2 I I TYI Type 5 Type 6 -7iGJx- mm MPa 1 bar MPa 1 bar MPa MPa 1 bar 5 41,5 415 6,3 40,5 405 10 33,0 330 12,5 27,5 275 16 25,
20、0 250 19 21,5 215 25 16,5 165 31,5 12,5 125 38 30 90 51 80 I 8o 38,0 32,7 380 327 27,5 275 21,5 215 18,7 187 16,7 167 13,2 132 45,0 450 44,5 445 41,5 415 35,0 350 35,0 350 28,0 280 21,0 210 18,5 185 , 165 , 165 36,2 362 55,0 550 27,6 276 42,0 420 34,5 345 21,5 215 38,0 380 34,5 345 17,2 172 32,5 325
21、 34,5 345 14,6 146 29,0 290 34,5 345 , 112 , 112 , 25,O 250 / 34,5 345 Table 9 - Minimum bend radius Dimensions in millimetres Nominal bore 5 6,3 10 12,5 16 19 25 31,5 38 51 Minimum bend radius Type 1 Types 2 and 4 Type 3 Type 5 Type 6 90 100 100 150 130 130 180 180 150 230 200 200 190 250 240 230 3
22、00 280 240 300 300 340 350 305 420 380 460 455 420 500 450 560 560 510 630 600 660 710 635 SANS 6805:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .IS0 6805: 1994(E) 0 IS0 8 Length of hose necessarily demonstrate an inability of the hose
23、 to meet the specified requirements with an alternative fitting. The mode and position of any failures shall be re- corded. 8.1 The hose shall be supplied in lengths as speci- fied by the purchaser, subject to a tolerance on the specified lengths of + 2 %. 8.2 When no specific lengths are ordered, t
24、he per- centages of different lengths in any given bulk deliv- ery shall be: In addition to being capable of meeting the impulse test described in 9.1, 6,3 mm and 10 mm hose of type 2 shall also be capable of meeting the following impulse test: a) over 13 m: not less than 65 % b) 7,5 m to 13 m: not
25、more than 35 % c) 1 m to 7,5 m: not more than 10 % No length shall be less than 1 m. When tested to an impulse pressure of 76,0 MPa (760 bar) (for 6,3 mm hose) or 65,5 MPa (655 bar) (for 10 mm h ose) in accordance with IS0 6803, the hose shall be required to achieve 5 000 impulse cy- cles without fa
26、ilure. Three additional test pieces shall be used for this test. Impulse test requirements 9/l When tested in accordance with the require- ments of IS0 6803 with the following parameters for test pressure: types 1 to 5: 133 % of the maximum working pressure given in table8, the type 6: 120 % of give
27、n in table8, maximum hose assemblies of impulse cycles sha as working pressure II withsta nd a minimum number follows: 10 Cold-flexibility requirements When tested in accordance with method B of IS0 4672:1988, at a temperature of - 40 “C, there shall be no cracking of the lining or cover. The test p
28、iece shall not leak or crack when subjected to a proof test after regaining ambient temperature. 11 Ozone resistance When tested in accordance with IS0 7326, no crack- ing or deterioration of the cover shall be visible. 12 Oil resistance type 1: 200 000 cycles, types 2 and 4: 100 000 cycles, types 3
29、 and 5: 400 000 cycles, type 6: 500 000 cycles. The lining and the cover, when tested by the method described in IS0 1817, immersed in oil No. 3 for 72 h at a temperature of 100 OC, shall show no shrinkage and shall not show volume swelling greater than 100 % for the cover and 60 % for the lining. 9
30、.2 The oil circulating in the hose assemblies under test shall be maintained at a temperature of 100 “C + 5 “C for types 1, 3 and 5; - 55 “C _+ 5 “C for types 2 and 4; 13 Abrasion resistance The cover of the hose, when tested by the method described in IS0 6945 using a vertical force of 50 N, shall
31、have a maximum loss in mass of I,0 g after 2 000 test cycles. 121 “C + 5 “C for type 6. 14 Electrical resistance 9.3 There shall be no leakage or other malfunction When tested in accordance with IS0 8031, the elec- after the specified number of cycles. trical resistance, as measured between the elec
32、trodes in the manner described, shall not exceed 2 MQ/m. Leakage at the end fitting, fitting blow-off or rupture of the hose adjacent to the fitting shall be considered as a failure of the assembly. Such failures do not Tests shall be made on five lengths of hose and all the test results shall be wi
33、thin the specified limit. SANS 6805:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .0 IS0 IS0 6805:1994(E) The statutory requirement of the national authority of a particular country for electrical resistance may be different from that qu
34、oted. In such cases, the re- quirement of the national authority shall apply. 15 Flame resistance When tested in accordance with IS0 8030, the aver- age time of persistence of flame or glow, after with- drawal of the flame, shall not exceed 30 s. Six test pieces of hose shall be tested and the avera
35、ge value calculated from the individual results. The statutory requirement of the national authority of a particular country for flame resistance may be dif- ferent from that quoted. In such cases, the require- ment of the national authority shall apply. 16 Adhesion between components When tested in
36、 accordance with IS0 8033, adhesion between lining and reinforcement and between re- inforcement layers shall not be less than 2,5 kN/m. Adhesion between cover and reinforcement shall not be less than 4,0 kN/m. 17 Marking Hoses complying with this International Standard shall be marked with at least
37、 the following: a) the number of this International Standard, i.e. IS0 6805; b) c) d the hose type; the nominal bore size; the manufacturers name or trade-mark; e) the date of manufacture, i.e. the month and last two digits of the year of manufacture, e.g. IO/94 (= October 1994); f 1 the maximum wor
38、king pressure. Other information as agreed between and the manufacturer may be included, the purchaser if required. SANS 6805:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .This page has been left blank intentionally SABS Standards Divis
39、ion The objective of the SABS Standards Division is to develop, promote and maintain South African National Standards. This objective is incorporated in the Standards Act, 2008 (Act No. 8 of 2008). Amendments and Revisions South African National Standards are updated by amendment or revision. Users
40、of South African National Standards should ensure that they possess the latest amendments or editions. The SABS continuously strives to improve the quality of its products and services and would therefore be grateful if anyone finding an inaccuracy or ambiguity while using this standard would inform
41、 the secretary of the technical committee responsible, the identity of which can be found in the foreword. Tel: +27 (0) 12 428 6666 Fax: +27 (0) 12 428 6928 The SABS offers an individual notification service, which ensures that subscribers automatically receive notification regarding amendments and
42、revisions to South African National Standards. Tel: +27 (0) 12 428 6883 Fax: +27 (0) 12 428 6928 E-mail: salessabs.co.za Buying Standards Contact the Sales Office for South African and international standards, which are available in both electronic and hardcopy format. Tel: +27 (0) 12 428 6883 Fax:
43、+27 (0) 12 428 6928 E-mail: salessabs.co.za South African National Standards are also available online from the SABS website http:/www.sabs.co.za Information on Standards The Standards Information Centre provides a wide range of standards-related information on both national and international standa
44、rds, and is the official WTO/TBT enquiry point for South Africa. The Centre also offers an individual updating service called INFOPLUS, which ensures that subscribers automatically receive notification regarding amendments to, and revisions of, international standards. Tel: +27 (0) 12 428 6666 Fax:
45、+27 (0) 12 428 6928 E-mail: infosabs.co.za Copyright The copyright in a South African National Standard or any other publication published by the SABS Standards Division vests in the SABS. Unless exemption has been granted, no extract may be reproduced, stored in a retrieval system or transmitted in
46、 any form or by any means without prior written permission from the SABS Standards Division. This does not preclude the free use, in the course of implementing the standard, of necessary details such as symbols, and size, type or grade designations. If these details are to be used for any purpose other than implementation, prior written permission must be obtained. Details and advice can be obtained from the Senior Manager. Tel: +27 (0) 12 428 6666 Fax: +27 (0) 12 428 6928 E-mail: infosabs.co.za
