SANS 907-2009 Stainless steel sinks for institutional use《机构用不锈钢》.pdf

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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 978-0-626-22514-8 SANS 907:2009 Edition 2.1 Any reference to SABS 907 is deemed to be a reference to this standard (Government Notice No. 1373 of 8

4、November 2002)SOUTH AFRICAN NATIONAL STANDARD Stainless steel sinks for institutional use Published by SABS Standards Division 1 Dr Lategan Road Groenkloof Private Bag X191 Pretoria 0001 Tel: +27 12 428 7911 Fax: +27 12 344 1568 www.sabs.co.za SABS This standard may only be used and printed by appro

5、ved subscription and freemailing clients of the SABS.SANS 907:2009 Edition 2.1 Table of changes Change No. Date Scope Amdt 1 2009 Amended to change the designation of SABS standards to SANS standards, to update the definition of “acceptable“, and to update a referenced standard. Foreword This South

6、African standard was approved by National Committee SABS TC 1077, Engineering materials Ferrous metals, in accordance with procedures of the SABS Standards Division, in compliance with annex 3 of the WTO/TBT agreement. This document was published in February 2009. This document supersedes SABS 907:1

7、972 (first revision). A vertical line in the margin shows where the text has been technically modified by amendment No. 1. Preface When the metrication of SABS 907:1968 was considered, the opportunity was taken to revise the document and to apply where practicable a modular size discipline correspon

8、ding to the International Standards Organization s recommendation on modular sizes for the building industry. The basic module is 300 mm, but 100 mm is permissible for small features. In this specification use has also been made of half a module to avoid large changes in existing dimensions. Attenti

9、on is drawn to the fact that the provision of overflow outlets has been omitted from the requirements, although it is known that the by-laws of some local authorities require such outlets to be fitted. In use an overflow outlet soon becomes partially or completely blocked. It not only has a short ef

10、fective life, but also becomes a source of foul odours. Many health authorities regard overflow outlets as constituting a health hazard, and for this reason it was decided that it would be inappropriate to include them in a national specification. Considerations of hygiene also require that sinks sh

11、ould be used as freestanding units, installed at least 75 mm away from any wall, rather than as built-in units which give no access for cleaning at the back. Users are reminded that reversible sinks, on which no provision is made for a splash back or a tiling key, are not suitable as built-in units.

12、 This standard may only be used and printed by approved subscription and freemailing clients of the SABS.SANS 907:2009 Edition 2.1 1 Contents Page Foreword Preface 1 Scope . 3 2 Definitions 3 3 Types . 4 4 Constructional requirements 4 5 Marking 7 6 Sampling and compliance with the specification . 7

13、 7 Inspection and methods of test 8 7.1 Inspection 8 7.2 Methods of test 8 Figures 1 and 2 . 9-10 Appendix A Applicable standards 11 Appendix B Notes to purchasers . 11 This standard may only be used and printed by approved subscription and freemailing clients of the SABS.SANS 907:2009 Edition 2.1 2

14、 This page is intentionally left blank This standard may only be used and printed by approved subscription and freemailing clients of the SABS.SANS 907:2009 Edition 2.1 3 Stainless steel sinks for institutional use 1 Scope 1.1 This specification covers material, dimensional, and constructional requi

15、rements for stainless steel crockery sinks with draining boards and stainless steel pot sinks, for use in institutions. NOTE a) The titles of standards referred to by number in the specification are given in appendix A. b) Requirements that must be specified by the purchaser are listed in appendix B

16、. 2 Definitions 2.1 For the purposes of this specification the following definitions shall apply: acceptable acceptable to the authority administering this standard, or to the parties concluding the purchase contract, as relevant Amdt 1 apron the vertical flange round the exposed edges of the sink,

17、formed by bending down the edges of the draining board or peripheral flange, as relevant bright polished finish a bright reflective finish obtained by polishing the surface without complete obliteration of previously existing grinding marks or other surface texture crockery sink a complete unit that

18、 comprises one or more bowls and draining boards and an apron, and that may have a splash back defective a sink that fails in one or more respects to comply with the appropriate requirements of the specification directional satin finish a finish obtained by so grinding the surface with fine abrasive

19、s (without subsequent polishing) as to leave a silky appearance, the abrasive marks running in the same general direction institution any premises, other than a private dwelling, on which catering is done for a large number of persons This standard may only be used and printed by approved subscripti

20、on and freemailing clients of the SABS.SANS 907:2009 Edition 2.1 4 lot not more than 100 sinks of the same type, size, material, and construction, from one manufacturer, submitted at any one time for inspection and testing pot sink a complete unit that comprises one or more deep bowls with a flange

21、and an apron around the periphery, and that may have a splash back or a draining board or both splash back a vertical face formed at the back or end of a sink as a barrier against splash 3 Types 3.1 Sinks shall be of one of the following types, as specified by the purchaser: a) Right bowl sinks. Cro

22、ckery sinks having one or more bowls to the right of the draining board when viewed from the front (see figure 1(a). b) Left bowl sinks. Crockery sinks having one or more bowls to the left of the draining board when viewed from the front. c) Centre bowl sinks. Crockery sinks having the bowl(s) in th

23、e centre with a draining board on either side (see figure 1(b). d) Pot sinks. Sinks having one or more bowls with or without a draining board (see figure 2). 4 Constructional requirements 4.1 Material The stainless steel used shall have the appropriate composition given in table 1, for AISI type 430

24、, type 304, or type 316, as specified by the purchaser. Table 1 Chemical composition of stainless steel 1 2 3 4 5 Chemical composition % Carbon AISI type number* Chromium Nickel max. Molybdenum 430 304 316 14 18 17 20 16 18 7, min. 10 14 0,12 0,08 0,08 2,0 3,0 * Type 430 is a magnetic stainless stee

25、l whose corrosion resistance is adequate for normal conditions. Type 304 is a non-magnetic austenitic stainless steel (commonly known as 18/8) having superior resistance to corrosion and to staining. Type 316 is an austenitic stainless steel suitable for severe conditions such as those in photograph

26、ic laboratories. The type numbers are those given by the American Iron and Steel Institute. This standard may only be used and printed by approved subscription and freemailing clients of the SABS.SANS 907:2009 Edition 2.1 5 4.2 Construction The sinks shall be made by stamping, pressing, or fabricati

27、ng, or by a combination of two or more of these methods. 4.3 Joints All joints shall fit closely, and the whole length of each joint shall be welded. The welded joints shall be ground flush with the working face. No solder shall be used on joints. 4.4 Welds Welds shall be fusion welds done by the in

28、ert gas arc welding process or by any other welding process that produces a weld whose mechanical properties and corrosion resistance are at least of the same order as those of the parent metal. 4.5 Finish All exposed surfaces shall be free from buckles, dents, pits, deep scratches, and other defect

29、s, and shall have a medium directional satin finish or bright polished finish, as specified by the purchaser. The quality of the finish shall not be inferior to that of the finish on the relevant reference sample 1)held by the South African Bureau of Standards. The sinks shall be free from dirt, gre

30、ase, graphite, and other foreign matter. 4.6 Design and dimensions The design shall be generally similar to the typical designs shown in figures 1 and 2. Unless otherwise specified by the purchaser, the dimensions shall conform to the appropriate values given in columns 2, 3, 4, and 6 of table 2, an

31、d the overall length of single-bowl sinks shall be a multiple of 300 mm, as specified by the purchaser, subject to the maximum value given in column 5 of table 2. The overall size of double-bowl sinks shall be as specified by the purchaser. If so required by the purchaser, a pot-sink bowl may be fit

32、ted as the second bowl of a double-bowl crockery sink. The thickness of the material for bowls and for draining boards shall be at least 1,20 mm except that, if the length or width of the bowl is greater than 600 mm and 500 mm respectively, the material for the bowl shall have an acceptable thicknes

33、s greater than 1,60 mm. 4.7 Bowls 4.7.1 General The bottom of the bowl shall be designed with a fall towards the outlet to allow the water to drain effectively. The sides of the bowl shall slope inwards to an extent not exceeding 7,5 from the vertical. All corners shall have a radius of at least 25

34、mm. The bowl of a crockery sink shall be wholly below the level of the draining board. If so required by the purchaser, the bowl shall have a sound-deadening material (see 4.12) permanently attached to the outside surface. 4.7.2 Outlet The outlet hole in the bowl shall have a recess capable of accom

35、modating a waste connection of nominal size at least 40 mm 2)and shall be so designed that, when the waste connection is in position, water drains completely from the bowl. 1) Manufacturers may on application to the South African Bureau of Standards inspect the reference sample. 2) A 40 mm waste con

36、nection is equivalent to a 1 in BSP connection. This standard may only be used and printed by approved subscription and freemailing clients of the SABS.SANS 907:2009 Edition 2.1 6 Table 2 Dimensions of sinks and tolerances* (see figures 1 and 2) 1 2 3 4 5 6 Internal dimensions of bowls Overall dimen

37、sions of single-bowl sinks mm +mm Length at top, A Width at top, B Depth at shallow end, E Length D Width C Description of sink 5* 5* 5 max. 5 Crockery sink 500 500 250 600 Small pot sink 600 500 300 600 Large pot sink 750 500 400 3 000 600 Extra large pot sink 900 600 400 750 * If the slope of the

38、bowl does not exceed 2,5 from the vertical, minus tolerances on the length and on the width of the bowl shall be 12,5 mm. +The exact position at which the dimensions for the length, width and depth of bowls apply are given 7.1.2. 4.8 Draining boards Draining boards shall have a fluted top surface wi

39、th a slight fall (slope) towards the bowl(s) to prevent water from accumulating on the draining board. The length of the flutes shall be at least equal to that of the bowl. Sound-deadening material (see 4.12) shall be permanently attached to the bottom surface. A backing plate made from galvanized o

40、r enamelled mild steel sheet shall be fitted to the underside of the draining board in a position such that it makes contact with the sandwiched sound-deadening material attached to the draining board. The welds shall be coated with an approved corrosion resistant coating. 4.9 Splash backs When so r

41、equired by the purchaser, a splash back shall be provided on crockery sinks and on pot sinks in the position(s) specified by the purchaser. It shall be at least 140 mm high and shall have a horizontal flange of width at least 15 mm ending in an upward or downward flange of at least 10 mm. 4.10 Beads

42、 All sinks shall have a bead of height at least 5 mm round the edges (see figure 1). 4.11 Aprons Sinks shall have a vertical apron of height at least 50 mm (see figures 1 and 2). The apron shall have an inward return flange of width at least 10 mm. 4.12 Sound-deadening material The sound-deadening m

43、aterial attached to the outside surface of bowls and to the bottom surface of draining boards (see 4.7 and 4.8) shall be an acceptable material that has been proved to possess satisfactory sound-deadening, adhesive, heat resistant, non-corrosive, waterproof, and verminproof properties. The material

44、shall be so applied as to eliminate the metallic ring of the steel and exclude vermin. When tested in accordance with 7.2.2, the material shall not become detached or be otherwise affected by heat transfer from the water. This standard may only be used and printed by approved subscription and freema

45、iling clients of the SABS.SANS 907:2009 Edition 2.1 7 5 Marking 5.1 Marking The manufacturers name or trade name or trade mark, and the type number of the steel used shall appear in legible and indelible marking on every sink. 5.2 Method of marking The marking shall be embossed or stamped on the bod

46、y of the sink, or on a stainless steel plate permanently attached to the body of the sink. 6 Sampling and compliance with the specification 3)6.1 Sampling The following sampling procedure shall be applied in determining whether a lot complies with the appropriate requirements of the specification. T

47、he samples so taken shall be deemed to represent the lot for the respective properties. 6.1.1 Sample for inspection From each lot take, when relevant at random, the number of sinks shown in column 2 of table 3 relative to the appropriate lot size shown in column 1. 6.1.2 Sample for testing From each

48、 lot take at random the number of sinks shown in column 3 of table 3 relative to the appropriate lot size shown in column 1. Table 3 1 2 3 4 Sample size Lot size Sample for inspection Sample for testing Acceptance number Less than 20 All 1 0 20 100 20 2 1 6.2 Compliance with the specification The lo

49、t shall be deemed to comply with the requirements of the specification if after inspection and testing a) the number of defectives found in the sample taken in accordance with 6.1.1 does not exceed the appropriate acceptance number given in column 4 of table 3; and b) no defective is found in the sample taken in accordance with 6.1.2. 3) This section applies to the sampling for inspection and testing before acceptance or rejection of single lots (consignments) in cases where no information about the implementation of quality control or testing durin