1、 Reference number ISO 12633-2:2011(E) ISO 2011INTERNATIONAL STANDARD ISO 12633-2 First edition 2011-09-15 Hot-finished structural hollow sections of non-alloy and fine grain steels Part 2: Dimensions and sectional properties Profils creux de construction finis chaud, en acier non alli ou grains fins
2、 Partie 2: Dimensions et caractristiques du profil ISO 12633-2:2011(E) COPYRIGHT PROTECTED DOCUMENT ISO 2011 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and mi
3、crofilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO
4、 2011 All rights reservedISO 12633-2:2011(E) ISO 2011 All rights reserved iiiContents Page Foreword iv 1 Scope 1 2 Normative reference 1 3 Terms and definitions . 1 4 Symbols 1 5 Information to be supplied by the purchaser . 2 5.1 Mandatory information 2 5.2 Options . 2 6 Tolerances 3 7 Measurement
5、of size and shape 4 7.1 General . 4 7.2 Outside dimensions 4 7.3 Thickness . 4 7.4 Out-of-roundness 5 7.5 Concavity and convexity 5 7.6 Squareness of sides 5 7.7 External corner profile 6 7.8 Twist 6 7.9 Straightness . 7 8 Dimensions and sectional properties . 8 Annex A (normative) Formulae for calc
6、ulation of sectional properties 24 ISO 12633-2:2011(E) iv ISO 2011 All rights reservedForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out th
7、rough ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collab
8、orates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Stan
9、dards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of
10、 this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 12633-2 was prepared by Technical Committee ISO/TC 5, Ferrous metal pipes and metallic fittings, Subcommittee SC 1, Steel tubes. This first edition of ISO 12633-2
11、cancels and replaces ISO 657-14:2000, of which it constitutes a minor revision. In particular, better grouping of several documents by subject area and minor editorial improvements have been carried out. ISO 12633 consists of the following parts, under the general title Hot-finished structural hollo
12、w sections of non-alloy and fine grain steels: Part 1: Technical delivery conditions Part 2: Dimensions and sectional properties INTERNATIONAL STANDARD ISO 12633-2:2011(E) ISO 2011 All rights reserved 1Hot-finished structural hollow sections of non-alloy and fine grain steels Part 2: Dimensions and
13、sectional properties 1 Scope This part of ISO 12633 specifies the tolerances for hot-finished circular, square and rectangular structural hollow sections, and gives the dimensions and sectional properties for a range of standard sizes. NOTE For the technical delivery requirements, see ISO 12633-1. 2
14、 Normative reference The following referenced documents are indispensable for the application 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 12633-1, Hot-finished st
15、ructural hollow sections of non-alloy and fine grain steels Part 1: Technical delivery conditions 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 12633-1 apply. 4 Symbols For the purposes of this document, the symbols given in Table 1 apply. Table 1
16、Symbols Symbol Unit Definition A cm 2Cross-sectional area A sm 2 /m Surface area per unit length B mm Nominal length of side of a square hollow section Nominal length of the shorter side of a rectangular hollow section C 1 ; C 2mm Length of external corner profile of a square or rectangular hollow s
17、ection C tcm 3Torsional-modulus constant D mm Nominal outside diameter of a circular hollow section D max ; D minmm Maximum and minimum outside diameter of a circular hollow section, measured in the same plane ISO 12633-2:2011(E) 2 ISO 2011 All rights reservedTable 1 (continued) Symbol Unit Definiti
18、on e mm Deviation from straightness H mm Nominal length of the longer side of a rectangular hollow section I cm 4Second moment of area I tcm 4Torsional-inertia constant (polar moment of inertia for circular hollow sections only) i cm Radius of gyration L mm Length M kg/m Mass per unit length O % Out
19、-of-roundness R mm External corner radius of a square or rectangular hollow section T mm Nominal thickness V mm Total twist V 1mm Twist measured at one end of a section W elcm 3Elastic section modulus W plcm 3Plastic section modulus x 1mm Concavity of a side of a square or rectangular hollow section
20、 x 2mm Convexity of a side of a square or rectangular hollow section XX Axis of cross-section: major axis of a rectangular hollow section YY Axis of cross-section: minor axis of a rectangular hollow section Degrees Angle between adjacent sides of a square or rectangular hollow section 5 Information
21、to be supplied by the purchaser 5.1 Mandatory information The following information from this part of ISO 12633 shall be supplied by the purchaser at the time of enquiry and order: a) the type of length, and the length or the length range (see Table 3); b) the dimensions (see Clause 8). NOTE This in
22、formation is included in the list of information to be supplied by the purchaser contained in 5.1 of ISO 12633-1:. 5.2 Options One option is specified in this part of ISO 12633. In the event that the purchaser does not indicate his wish to implement this option at the time of enquiry or order, the p
23、roducts shall be supplied in accordance with the basic specification (see 5.1). Option 1: the tolerance on approximate length shall be mm (see Table 3). 1500 ISO 12633-2:2011(E) ISO 2011 All rights reserved 36 Tolerances 6.1 Tolerances on the dimensions and mass of hot-finished hollow sections shall
24、 not exceed the values given in Table 2 for shape and mass, Table 3 for length and, in the case of submerged-arc-welded hollow sections, Table 4 for the height of the internal and external weld bead. 6.2 The internal corners of square and rectangular hollow sections shall be rounded. NOTE The intern
25、al corner profile is not specified. Table 2 Tolerances Characteristic Circular hollow sections Square and rectangular hollow sections Outside dimensions (D, B, H) 1 %, with a minimum of 0,5 mm and a maximum of 10 mm 1 %, with a minimum of 0,5 mm Thickness, T 10 % abOut-of-roundness, O 2 % for hollow
26、 sections having a diameter to thickness ratio not exceeding 100 c Concavity/convexity d 1 % Squareness of sides 90 1 External corner profile (C 1 , C 2or R) e 3T maximum at each corner Twist, V 2 mm plus 0,5 mm/m length Straightness 0,2 % of total length Mass per unit length, M 6 % on individual le
27、ngths f aThe positive deviation is limited by the tolerance on mass. bFor seamless sections, thicknesses 10 % less than, but not more than 12,5 % less than, the nominal thickness may occur in smooth transition areas, but not over more than 25 % of the circumference. cWhere the diameter to thickness
28、ratio exceeds 100, the tolerance on out-of-roundness shall be agreed. dThe tolerance on convexity and concavity is independent of the tolerance on outside dimensions. eThe sides need not be tangential to the corner arcs. fThe positive tolerance on the mass per unit length of seamless hollow sections
29、 shall be 8 %. Table 3 Tolerances on length aType of length Range mm Tolerance Random length 4 000 to 16 000 with a range of 2 000 per order item 10 % of sections supplied may be below the minimum for the ordered range but not less than 75 % of the minimum of the range Approximate length 4 000 to 16
30、 000 500 mm bExact length 2 000 to 6 000 10 0 mm 6 000 15 0 mm aThe purchaser shall indicate in the enquiry and order the type of length required and the length range or length as appropriate. bOption 1 (see 5.2): the tolerance on the approximate length shall be mm. 150 0 ISO 12633-2:2011(E) 4 ISO 2
31、011 All rights reservedTable 4 Tolerance on height of internal and external weld bead for submerged-arc-welded hollow sections Thickness T Maximum weld bead height mm mm 14,2 3,5 14,2 4,8 7 Measurement of size and shape 7.1 General All external dimensions, including out-of-roundness, shall be measur
32、ed at a distance from the end of the hollow section of not less than D for circular sections, B for square sections or H for rectangular sections, with a minimum of 100 mm. 7.2 Outside dimensions For circular hollow sections, the diameter, D, shall be measured. A calliper gauge, circumference tape o
33、r other suitable device may be used at the discretion of the manufacturer. Dimensions B and H shall be measured at a position within 5 mm from the start of the external corner profile as shown in Figure 1. Dimensions in millimetres aThis dimension is a maximum when measuring B or H and a minimum whe
34、n measuring T. Figure 1 Limiting cross-sectional positions for measuring the dimensions B, H and T for square or rectangular hollow sections 7.3 Thickness The thickness, T, of welded hollow sections shall be measured at a position not less than 2T from the weld. The limiting cross-sectional position
35、s for measuring the thickness of square and rectangular hollow sections are shown in Figure 1. NOTE Thickness is normally measured within a distance of half the outside diameter or half the longer side length from the end of the section. ISO 12633-2:2011(E) ISO 2011 All rights reserved 57.4 Out-of-r
36、oundness The percentage out-of-roundness, O, of a circular hollow section shall be calculated from the following equation: max min 100 DD O D 7.5 Concavity and convexity The concavity, x 1 , or the convexity x 2 , of the sides of a square or rectangular hollow section shall be measured as shown in F
37、igure 2. The percentage concavity or convexity shall be calculated using the following: 1212 100 ; 100 ; 100 ; 100 xxxx BBHH where B and H are the lengths of the sides containing the concavity, x 1 , or the convexity, x 2 . Figure 2 Measurement of concavity/convexity of square or rectangular hollow
38、sections 7.6 Squareness of sides The deviation from squareness of the sides of a square or rectangular hollow section is defined as the difference between 90 and as shown in Figure 3. ISO 12633-2:2011(E) 6 ISO 2011 All rights reservedDeviation from squareness = 90 Figure 3 Squareness of sides of squ
39、are or rectangular hollow sections 7.7 External corner profile 7.7.1 The external corner profile of a square or rectangular hollow section shall be measured in accordance with 7.7.2 or 7.7.3 at the discretion of the manufacturer. 7.7.2 Measure the external corner radius, R. Use a radius gauge or oth
40、er suitable device. 7.7.3 Measure the length of the external corner profile (C 1and C 2in Figure 4). Figure 4 External corner profile of square or rectangular hollow sections 7.8 Twist 7.8.1 The total twist, V, in a square or rectangular hollow section shall be determined in accordance with 7.8.2 or
41、 7.8.3 at the discretion of the manufacturer. 7.8.2 Place the hollow section on a horizontal surface with one side at one end pressed flat against the surface. At the opposite end of the hollow section, determine the difference, V, in the height of the two lower corners from a horizontal surface (se
42、e Figure 5). ISO 12633-2:2011(E) ISO 2011 All rights reserved 7ist, V, is the difference between the values V 1(see Figure 6) measured at each end of the hollow section. 7.8.3 Measure the total twist, V, with a spirit level and micrometer (screw) gauge or other suitable device. The reference length
43、of the spirit level shall be the distance between the intersection of the flat sides and the external corner profile (see Figure 6). The total twFigure 5 Total twist of square or rectangular hollow sections Key 1 spirit level 2 micrometer gauge for rectangular sections, B for square sections. Figure
44、 6 Measurement of twist 7.9 Straightness The deviation from straightness, e, of the total length of a hollow section shall be measured at the point of maximum departure of the hollow section from a straight line connecting its two ends as shown in Figure 7. ion from straightness shall be calculated
45、using the following: aH The percentage deviat 100 % e L ISO 12633-2:2011(E) 8 ISO 2011 All rights reservedFigure 7 Measurement of deviation from straightness 8 Dimensions and sectional properties The nominal section dimensions and sectional properties for a range of sizes of hot-finished structural
46、hollow e Figure 8), Table 6 for square sections and Table 7 for calculated from the formulae given in Annex A. Other sections are given in Table 5 for circular sections (se rectangular sections. The sectional properties were sizes and thicknesses may be available. NOTE See Table 5. Figure 8 Circular
47、 hollow section ISO 12633-2:2011(E) ISO 2011 All rights reserved 9Table 5 Nominal dimensions and sectional properties of circular hollow sections Outside diameter Thickness Mass per unit length Cross- sectional area Second moment of area Radius of gyration Elastic section modulus Plastic section mod
48、ulus Torsional inertia constant Torsional modulus constant Surface area per unit length Nominal length per tonne D T M A I i W elW plI tC tA smm mm kg/m cm 2cm 4cm cm 3cm 3cm 4cm 3m 2 /m m 21,3 2,3 1,08 1,37 0,629 0,677 0,590 0,834 1,26 1,18 0,066 9 928 21,3 2,6 1,20 1,53 0,681 0,668 0,639 0,915 1,3
49、6 1,28 0,066 9 834 21,3 3,2 1,43 1,82 0,768 0,650 0,722 1,06 1,54 1,44 0,066 9 700 26,9 2,3 1,40 1,78 1,36 0,874 1,01 1,40 2,71 2,02 0,084 5 717 26,9 2,6 1,56 1,98 1,48 0,864 1,10 1,54 2,96 2,20 0,084 5 642 26,9 3,2 1,87 2,38 1,70 0,846 1,27 1,81 3,41 2,53 0,084 5 535 33,7 2,6 1,99 2,54 3,09 1,10 1,84 2,52 6,19 3,67 0,106 501 33,7 3,2 2,41 3,07 3,60 1,08 2,14 2,99 7,21 4,28 0,106 415 33,7 4,0 2,93 3,73 4,19 1,06 2,49 3,55 8,38 4,97 0,
