Järn och stålprodukter

This document specifies sizes and nominal working pressures for tubes with outside diameters in accordance with ISO 4397, and wall thicknesses and mechanical properties in accordance with ISO 3304 (seamless precision steel tubes} and ISO 3305 (welded precision steel tubes). The nominal working pressures included in this standard reflect a design factor ratio of 4 to 1 applied to the calculated burst pressures.

This part of ISO 6935 specifies technical requirements for ribbed bars to be used as reinforcement in concrete.

This part of ISO 6935 is applicable to steel delivered in the form of bars, coils and de-coiled products. It includes both weldable and non-weldable steels.

The production process is at the discretion of the manufacturer.

This part of ISO6935 is not applicable to ribbed bars produced from finished products, such as plates and railway rails.

This part of this European standard specifies tolerances for hot finished circular, square, rectangular and elliptical structural hollow sections, manufactured in wall thicknesses up to 120 mm, in the following size ranges:

— Circular: Outside diameters up to 2 500 mm;

— Square: Outside dimensions up to 800 mm × 800 mm;

— Rectangular: Outside dimensions up to 750 mm × 500 mm;

— Elliptical: Outside dimensions up to 500 mm × 250 mm.

The formulae for calculating sectional properties of sections manufactured to the dimensional tolerances of this standard, to be used for the purposes of structural design, are given in Annex A.

Dimensions and sectional properties for a limited range covering the more common sizes are given in Annex B.

NOTE The designation of the sections' major axis (yy) and its minor axis (zz) align with the axis designation used for structural design in the structural Eurocodes.

This part of prEN 10219 specifies the technical delivery conditions for electric welded and submerged arc welded cold formed structural steel hollow sections of circular, square, rectangular or elliptical forms and applies to structural hollow sections formed cold without subsequent heat treatment.

The general conditions (product characteristics, test methods and performance criteria that apply under the Construction Products Regulations) are specified in prEN 10219-1 and the requirements for tolerances, dimensions and sectional properties in prEN 10219-3.

NOTE 1 prEN 10219-1 covers provision of the Construction Products Regulations (CPR) to fulfil European law for construction products. The technical delivery conditions are described within prEN 10219-2 in combination with Clauses 2, 3, 4, 5, 7 and 8 of prEN 10219-1.

NOTE 2 The attention of users is drawn to the fact that whilst cold formed grades in prEN 10219-2 can have equivalent mechanical properties to hot-finished grades in prEN 10210-2 the sectional properties of square and rectangular hollow sections in prEN 10219-3 and prEN 10210-3 are not equivalent.

NOTE 3 A range of steel grades is specified in this European Standard and the user should select the grade most appropriate to the intended use and service conditions. The grades and mechanical properties, but not the final supply condition of cold formed hollow sections are comparable with those in EN 10025-2, EN 10025-3, EN 10025-4, EN 10025-5, EN 10025-6, EN 10149-2 and EN 10149-3.

NOTE 4 Hollow sections for offshore structures are covered in EN 10225.

This document specifies the technical delivery requirements for open die forgings, forged bars and products pre-forged and finished in ring rolling mills, manufactured from stainless steels with ferritic, martensitic, austenitic and austenitic-ferritic structures.

NOTE The majority of steels listed in this part of EN 10250 are identical to steels specified EN 10088-3 and more extensive information on properties is given in that European Standard.

General information on technical delivery conditions is given in EN 10021.