GOST 8239-89

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  ГОСТ 8239-89

GOST 8239−89 hot-rolled steel I-Beams. Assortment

GOST 8239−89
B2 Group

INTERSTATE STANDARD

BEAMS STEEL HOT ROLLED
Assortment

Hot-rolled steel flange beams. Rolling products

ISS 77.140.70
OKP 09 2500

Date of introduction 1990−07−01

INFORMATION DATA

1. DEVELOPED AND INTRODUCED by the Ministry of ferrous metallurgy of the USSR, GOSSTROY of the USSR, Central research Institute of building constructions

2. APPROVED AND put INTO EFFECT by Decision of the USSR State Committee for standards from 27.09.89 N 2940

3. The standard fully complies ST SEV 2209−80

4. Standard corresponds to ISO 657−13

5. Standard uniform with OBD 5951−75, TGL 10369

6. REPLACE GOST 8239−72

7. Limitation of actions taken by Protocol No. 7−95 Interstate Council for standardization, Metrology and certification (ICS 11−95)

8. REPRINTING. October 2012


This standard specifies the gauge hot rolled steel I-beams with a slope faces internal shelves.

1. Cross section I-beams must match what is specified on the devil.1.

 — the height of the I-beam;  — width shelves;  — wall thickness; the average thickness of the shelf; the inner radius of curvature; the radius of curvature of the shelves

Damn.1

Note. The slope faces internal shelves should be 6−12%.

2. The nominal sizes of I-beams, the cross-sectional area, mass and reference values for the axes shall be as given in table.1.

Table 1

3. Accuracy rolling beams made:

increased accuracy — B;

conventional precision — V.

4. Tolerances for size and shape of the cross section I-beams (Fig.1−2) shall be as given in table.2.

Damn. 2 maximum deviations in size and shape of the cross section I-beams

 — shortened the width of the flange; is the width of an elongated flange; a misalignment of the shelf; a deflection wall

Damn.2

Table 2

mm

5. The deflection of the wall (the) must not exceed 0,15.

6. The curvature of the I-beam must not exceed 0.2% of the length.

7. Blunting the outer edges of the shelves I-beams increased accuracy should not exceed 2.2 mm for conventional I-beams accuracy is not controlled.

8. Profiles are manufactured with length from 4 to 12 m:

the measured length;

multiple of gauging length;

of random length.

By agreement with the consumer it is allowed manufacture of I-beams with a length of over 12 m.

9. Variations in the mass of 1 m of I-beam shall not exceed plus 3, minus 5%.

By agreement between manufacturer and consumer, the deviation in mass without control of the thickness of the shelves and the walls of I-beam shall not exceed plus 3, minus 3% for I-beams to N 16 and plus 2.5 minus 2.5% for the I-beams of over 16.

10. The size and geometric shape control at a distance of not less than 500 mm from the end of the I-beam.

The height of the I-beam in the control plane .