ISO 12633-2:2011 pdf free download – Hot-finished structural hollow sections of non-alloy and fine grain steels一 Part 2: Dimensions and sectional properties.
5 Information 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 information is included in the list of information to be supplied by the purchaser contained in5.1 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 products shall be supplied in accordance with the basic specification (see 5.1).
Option 1: the tolerance on approximate length shall be +150 mm (see Table 3).
6 Tolerances
6.1 Tolerances on the dimensions and mass of hot-finished hollow sections shall 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 internal corner profile is not specified.
A.1 General
Tables 5, 6 and 7 give nominal sectional properties for a range of standard sizes of hot-finished hollow sections. The nominal sectional properties of structural hollow sections of other sizes and thicknesses supplied according to the requirements of this part of ISO 12633 shall be calculated using the formulae given in this annex.
A.2 Circular hollow sections
The sectional properties given for circular hollow sections in Table 5 are calculated from the following geometrical properties using the formulae given in this clause.
7 Measurement of size and shape
7.1 General
All external dimensions, including out-of-roundness, shall be measured 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 or 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.
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 positions 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.
