1、BRITISH STANDARD BS5383:1986 Specification for Material identification of steel, nickel alloy and titanium alloy tubes by continuous character marking and colour coding of steel tubes UDC621.643034+669462:62777BS5383:1986 This British Standard, having been prepared under the direction of the Iron an
2、d Steel Standards Committee, was published under the authority ofthe Board of BSI and comes intoeffect on 30 September1986 BSI 03-1999 First published July1976 First revision September1986 The following BSI references relate to the work on this standard: Committee reference ISM/73 Draft for comment
3、84/38599 DC ISBN 0 580 15109 3 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Iron and Steel Standards Committee (ISM/-) to Technical Committee ISM/73, upon which the following bodies were represented: Associated Offices Technical Commi
4、ttee BEAMA Ltd. British Compressed Air Society British Gas Corporation British Shipbuilders British Steel Industry Electricity Supply Industry in England and Wales Engineering Equipment and Materials Users Association High Pressure Pipework Consultative Committee Process Plant Association Water-tube
5、 Boilermakers Association Welding Institute Co-opted members The following bodies were also represented in the drafting of the standard, through subcommittees and panels: Association of Hydraulic Equipment Manufacturers British Forging Industry Association British Industrial Truck Association Britis
6、h Welded Steel Tube Association Confederation of British Industry Energy Industries Council Institution of Gas Engineers Co-opted member Amendments issued since publication Amd. No. Date of issue CommentsBS5383:1986 BSI 03-1999 i Contents Page Committees responsible Inside front cover Foreword ii Se
7、ction 1. General requirements 1 Scope 1 2 Information to be supplied by the purchaser 1 3 Marking materials 1 Section 2. Specific requirements for character marking of tubes 4 Character marking 2 Section 3. Specific requirements for optional additional colour coding 5 Colour coding 3 Appendix A Exam
8、ples of marking 5 Table 1 Minimum height of characters 2 Table 2 Minimum width of colour coding stripe 3 Table 3 Colours used for the colour coding stripe for ferritic steels 3 Table 4 Colours used for the colour coding stripe for austenitic steels 4 Publication referred to Inside back coverBS5383:1
9、986 ii BSI 03-1999 Foreword This British Standard has been prepared under the direction of the Iron and Steel Standards Committee and supersedes BS5383:1976, which is withdrawn. The first edition was prepared following difficulties and dangers resulting from the installation in piping systems in pro
10、cess plant of items of pipe or components which were made from a material other than that intended. This edition takes account of work being carried out within the International Organization for Standardization (ISO) in the preparation of a standard for continuous character marking of steel tubes. I
11、t is divided into three sections which specify the general requirements for marking, specific requirements for character marking and specific requirements for optional colour coding when this option is required by the purchaser. The main technical differences between this edition and the previous on
12、e are that this edition includes colour coding for steel tubes as an additional option for use in conjunction with character marking, that it specifies larger character sizes for larger diameter tubes and that it specifies black for the colour of characters used for marking stainless steel tubes. Al
13、so, this edition specifies the minimum details to be marked and the marking sequence when the product standard does not specify a special sequence. Two changes have been made to the colour of stripes used for colour coding. For carbon-manganese steel with a minimum specified tensile strength up to a
14、nd including435 N/mm 2 , the colour is changed from dark grey to white, and for chromium-molybdenum steels up to and including2.0% (m/m) chromium, the colour is changed from pink to red. This standard requires that for the purpose of identification all pipes are marked clearly with the details requi
15、red by the relevant product standard; the marking is continuous. A simple colour code in the form of a stripe is also used to identify different groups of steels. These groups have been chosen so that if by error a different steel within the same group were used instead of the specified steel, it is
16、 improbable that catastrophic failure would result. It is necessary to take care that any steel included in a specific group exhibits the general characteristics of the group (see clause5). The groups are defined by nominal chemical composition or mechanical properties. The method of marking of mate
17、rials during manufacture is detailed and does not affect in any way the use of colour marking in accordance with BS1710 which defines a limited number of colours for the identification of the contents of piping systems in service. Where confusion might occur the user should ensure that the colour ma
18、rking applied in accordance with BS 5383 is obliterated after installation. Attention is drawn to the importance of ensuring that any marking obliterated during fabrication is repaired before despatch. Although the responsibility for marking is a contractual matter and therefore not specified in thi
19、s British Standard, attention is drawn to the guidance given in notes to4.1.1 and5.1.BS5383:1986 BSI 03-1999 iii It is intended that this standard should be applied when it is specifically referred to by relevant product standards, but it may be used in other instances when agreed between the purcha
20、ser and the manufacturer. NOTEFor the purposes of this standard the terms “pipe” and “tube” are synonymous although idiomatic use prefers sometimes the one and sometimes the other. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards a
21、re responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi toiv, pages1to6, an inside back cover and a back cover. This standard has
22、been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on theinside front cover.iv blankBS5383:1986 BSI 03-1999 1 Section 1. General requirements 1 Scope This British Standard specifies the requirements for material identification of
23、 steel, nickel alloy and titanium alloy tubes by continuous character marking and for the optional additional continuous colour coding of ferritic and austenitic steel tubes that are commonly used in piping systems. The colour coding can also be used for the marking of fittings and components (see5.
24、1). Section 1 covers the general requirements applicable to both sections 2 and 3. Section 2 covers specific requirements for definitive material identification in the form of printed characters which are applied continuously along the length of the tube. Section 3 covers specific requirements for t
25、he optional colour coding of discrete groups of ferritic steels and austenitic steels, in conjunction with the definitive character marking requirements of section 2. Austenitic steels other than those specified in this standard, nickel alloys and titanium alloys cannot be considered as discrete gro
26、ups and colour coding is not applicable to these materials. This standard does not specify requirements for the minimum height of characters or minimum width of colour coding stripe for tubes with an outside diameter of less than18mm or for finned tubes, and the method of marking or colour coding su
27、ch items should be the subject of agreement between the purchaser and the supplier. NOTEThe titles of the publications referred to in this standard are listed on the inside back cover. 2 Information to be supplied by the purchaser 2.1 General The following information shall be stated on the enquiry
28、and order: a) the number of this British Standard, i.e.BS5383:1986; b) the number of the relevant product standard and the material grade; c) the tube dimensions, e.g.outside diameter thickness; d) the manufacturing process designation, where applicable; e) the test category, where applicable. 2.2 O
29、ptional requirements There are two optional requirements incorporated in this standard. In the event that the purchaser wishes to take up either of the options he shall specify his requirements at the time of the enquiry and order as follows: a) that a special symbol or number reference is required
30、(see4.1.2); b) that additional colour coding is required (seesection 3). In the absence of such instruction the manufacturer shall be permitted to assume that neither of the options is required. 3 Marking materials 3.1 Quality of paint or ink The quality of the paint or ink as applied shall be such
31、that it shall have a life of at least1 year in unheated storage under cover. The dried film shall not contain more than0.025% by mass of each of the following metals: lead, tin, zinc, copper. NOTEFor certain applications, limits may also be required on the levels of sulphur and halogens in the paint
32、. These limits should be the subject of agreement between the supplier and the purchaser. 3.2 Colour The colours to be used shall comply with BS4800, according to the reference numbers given in4.5 for character marking and in clause5 for optional additional colour coding. 3.3 Compatibility with prot
33、ective coating The marking materials specified in this standard and the protective coating, if any, shall not affect each other chemically or physically. NOTEWhere the purchaser specifies a protective coating other than the manufacturers normal mill protection it is the purchasers responsibility to
34、ensure compatibility with the marking material.BS5383:1986 2 BSI 03-1999 Section 2. Specific requirements for character marking of tubes 4 Character marking 4.1 General 4.1.1 Tubes shall be marked with printed characters in accordance with4.2 to4.6. NOTE 1Marking should be applied by the manufacture
35、r or by the stockist, who should ensure that the marking is supplied in a good condition. NOTE 2Marking of items fabricated from tubes to comply with a purchasers requirements should be the subject of agreement between the purchaser and the fabricator, e.g.items may be identified and marked with a s
36、pecific part number which determines the material. 4.1.2 In addition to the requirements of4.2 to4.6 the supplier shall, at the option of the purchaser see2.2 a), print a reference number or symbol on the tube to enable the manufacturing history to be traced. The number or symbol shall at least be p
37、rinted on each end of the tube. NOTEIf this option is not taken up by the purchaser, the marking of a reference number or symbol may be at the discretion of the supplier. 4.2 Details to be marked The following minimum details shall be marked, together with any additional requirements specified in th
38、e product standard or specified by the purchaser (see4.1.2). a) Manufacturers symbol or suppliers symbol. b) Outside diameter thickness. c) Number of product standard. d) Material grade. e) Manufacturing process designation (ifspecified). f) Test category (if specified). 4.3 Marking sequence The det
39、ails shall be applied in the sequence specified in a) to f) of 4.2 unless the product standard specifies a special sequence, in which case the requirement of the product standard shall take precedence. Any additional marking shall be applied after the details specified in4.2. 4.4 Positioning of char
40、acters The details shall be printed continuously along the full length, commencing not more than300mm from the end of the tube. NOTE 1The marking should normally be over a length of tube of700mm maximum and repeated at intervals not exceeding750mm measured from the start of one set of characters to
41、the start of the next set, except where it is necessary to exceed these dimensions to accommodate the relevant details in accordance with4.2. NOTE 2Examples of markings are given in Appendix A. 4.5 Colour of characters 4.5.1 For ferritic steels the printed characters shall be white in accordance wit
42、h BS4800, colour code00E55. 4.5.2 For austenitic steels, nickel alloys and titanium alloys the printed characters shall be black in accordance with BS4800, colour code00E53. 4.6 Height of characters The minimum height of printed characters shall be as given in Table 1. Table 1 Minimum height of char
43、acters Outside diameter of tube Minimum height of characters mm mm Over120 15 Over38 up to and including120 9 18up to and including38 6 NOTEThe minimum height of characters for tubes with an outside diameter of less than18mm or for finned tubes should be the subject of agreement between the purchase
44、r and the supplier.BS5383:1986 BSI 03-1999 3 Section 3. Specific requirements for optional additional colour coding 5 Colour coding 5.1 General When optional additional colour coding has been specified by the purchaser see2.2 b), tubes shall be marked in accordance with5.2 or5.3, as appropriate. NOT
45、E 1If flanges, valves and other fittings are to be colour coded, they should be marked with the colour appropriate to the material composition (see5.2 and5.3) and, whenever this is practicable, the marking should be applied as a stripe along the length of the component. NOTE 2Colour coding should be
46、 applied by the manufacturer or by the stockist, or, if obliterated during fabrication, by the fabricator before despatch. 5.2 Ferritic steel tubes For tubes made from ferritic steels the colour shall be applied as a full stripe within the same quadrant as the character marking required by clause4.
47、The minimum width of the stripe shall be as given in Table 2 and the colour shall be as given for the appropriate material group identified in Table 3. 5.3 Austenitic steel tubes For tubes made from austenitic steels belonging to groups identified in Table 4 the colour shall be applied as a full-len
48、gth stripe within the same quadrant as the character marking required by clause4. The minimum width of the stripe shall be as given in Table 2 and the colour shall be as given for the appropriate material group identified in Table 4. Table 2 Minimum width of colour coding stripe Table 3 Colours used
49、 for the colour coding stripe for ferritic steels Outside diameter of tube Minimum width of stripe mm mm Over 38 12 18 up to and including 38 9 NOTEThe minimum width of colour coding stripe for tubes with an outside diameter less than18mm or for finned tubes should be the subject of agreement between the purchaser and the supplier. Group number Steel group a Colour of stripe Description b BS4800 colour code 1.0 Carbon and carbon-manganese steels with minimum specified tensile strengths up to and including435N/mm 2 White 00E55 1.1 Carbon and carbo
