GOST 2590-88

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  ГОСТ 2590-88

GOST 2590−2006 bars, steel, hot rolled round. Assortment

GOST 2590−2006
Group B22

INTERSTATE STANDARD

BARS, STEEL, HOT ROLLED ROUND

Assortment

Round hot-rolled steel bars. Dimensions

ISS 77.140.60

Date of introduction 2009−07−01

Preface

Goals, basic principles and main procedure of works on interstate standardization have been established in GOST 1.0−92 «interstate standardization system. Basic provisions» and GOST 1.2−97* «interstate standardization system. Interstate standards, rules and recommendations on interstate standardization. The procedure of development, adoption, application, renewal and cancellation"
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* Valid GOST 1.2−2009.

Data on standard

1 DEVELOPED by the research Institute «Ukrniimet» Ukrainian state scientific and technical center «Energostal», Interstate technical Committee for standardization MTK 327 «bars, shapes and sections"

2 SUBMITTED to the State Committee of Ukraine for technical regulation and consumer policy

3 ACCEPTED by the Interstate Council for standardization, Metrology and certification (minutes No. 30 dated December 7, 2006)

The standard was accepted by voting:

4 this standard conforms to regional standard EN 10060:2003* «bars, steel, hot rolled round General purpose. Dimensions and tolerances for shape and size» (EN 10060:2003 «Hot rolled round steel bars for general purposes — Dimensions and tolerances on shape and dimensions») in terms of requirements to the assortment.
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* Access to international and foreign documents referred to here and hereinafter, can be obtained by clicking on the link to the site shop.cntd.ru. — Note the manufacturer’s database.

The degree of compliance — non-equivalent (NEQ)

5 by Order of the Federal Agency for technical regulation and Metrology dated 29 July 2008, N 147th St inter-state standard GOST 2590−2006 introduced as a national standard of the Russian Federation from July 1, 2009

6 REPLACE GOST 2590−88

7 REISSUE. October 2012


Information about introduction in action (termination) of this standard is published in the index «National standards».

Information about the amendments to this standard is published in the index «National standards», and the text changes — in the information sign «National standards». In case of revision or cancellation of this standard the appropriate information will be published in the information index «National standards»

1 Scope

This standard applies to hot-rolled steel cold-rolled seamless tubes (hereinafter the lease) with a diameter from 5 to 270 mm inclusive, which is used in all industries.

Rent a diameter greater than 270 to 330 mm inclusive manufactured by agreement between manufacturer and consumer (the agreed specifications).

2 Classification. Basic parameters and dimensions

2.1 rentals are divided as follows:

— accuracy rolling:

particularly high — АО1;

high — A1, A2, A3;

high — B1;

ordinary — B1, B2, B3, B4, B5;

— length:

dimensional — MD;

measuring with non-standard length — MD1;

dimensional — CD;

dimensional with random length — КД1;

random — ND;

limited within the random — OD;

limited from the random length — EA1;

in rolls — NMD;

— limit deviations for the length of rental and multiple dimensional measuring length groups, DB and VD;

— the curvature on classes: I, II, III, IV.
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In the supply of rental with dimensional random length (MD1) dimensional with random length (КД1) and bounded by random length (EA1) is allowed rental of random length not more than 5% of the batch weight.

Figure 1 nominal diameter of round bars, limit deviation, cross-sectional area and weight of 1 m of length of hire

2.2 nominal diameter of round bars, limit deviation, cross-sectional area and weight of 1 m of length of hire shall be as specified in figure 1 and in table 1.

Figure 1

Table 1

2.2.1 hire with precision rolling A2 and B2 (table 1) allowed to produce with plus extreme deviation equal to the amount of the limit deviation for diameter (A3 and B3).

2.3 By agreement between manufacturer and consumer (the agreed specifications) is allowed to produce rolled stock with diameter more than 270 mm to 300 mm, inclusive, with limit deviation of ±6.0 mm over 300 to 330 mm inclusive, with limit deviation of ±7.0 mm.

2.4 By agreement between manufacturer and consumer (the agreed specifications) rental produce with plus the limit deviation for diameter (B5) shown in table 2.


Table 2

In millimeters

2.5 the Ovality of the rent must not exceed 75% of total limit deviation for diameter.

At the request of the consumer (the agreed specifications) oval hire — no more than 50% of total limit deviation for diameter and not more than 60% of total limit deviation for diameter to be rolled made of tool alloy steel and high speed steel.

2.6 rental with a diameter up to 9 mm inclusive manufactured in rolls, over 9 mm — in bars.

By agreement between manufacturer and consumer (the agreed specifications) rolled with a diameter of over 9 mm are made in rolls and less than 9 mm inclusive — in bars.

2.7 Bicycle manufacture length:

from 2 to 12 m inclusive — from commercial quality carbon steel and low alloy steel;

from 2 to 6 m, inclusive of high quality carbon steel and alloy steel;

from 1 to 6 m, inclusive — of high-alloy steel.

By agreement between manufacturer and consumer (the agreed specifications) hire produce off-gage length within the limits from 3 to 13 m, inclusive, with 10% of bars from the batch weight can have a lesser length but not less than 75% of the minimum length.

2.8 maximum deviations made on the length of rental and multiple dimensional measuring length should not exceed the values given in table 3.


Table 3

2.9 the Curvature of the rent must not exceed the values given in table 4.


Table 4

2.10 the curvature of the rolled measured at the site length of at least 1 m at a distance of not less than 100 mm from the end of the rod.

2.11 Diameter and ovality rolled measured at a distance of not less than 100 mm from the end of the rod and at least 1,5 m from the end of the strand at its mass up to 250 kg and not less than 3,0 m at a mass skein over 250 kg.

2.11.1 By agreement between manufacturer and consumer (the agreed specifications) diameter, ovality and the curvature of the rolled measured at a distance of not less than 150 mm from the end of the rod.