GOST 8568-77

INTERSTATE STANDARD

STEEL SHEETS WITH RHOMBIC
AND LENTIL RIFLE

TECHNICAL CONDITIONS

IPK STANDARDS PUBLISHING HOUSE

Moscow

INTERSTATE STANDARD

Introduction date 01.01.78

This standard applies to hot-rolled steel with one-sided rhombic and lentil corrugation general purpose sheets.

1. ASSORTMENT

1.1a. Sheet metal by thickness is produced:

high precision- BUT,

normal accuracy - B.

(Introduced additionally, Rev. No. 4).

1.1. The shape, dimensions, limit deviations and weight of 1 m 2 of a sheet with rhombic and lenticular corrugations must correspond to those indicated on, and in .

INTERSTATE STANDARD

STEEL SHEETS WITH RHOMBIC
AND LENTIL RIFLE

TECHNICAL CONDITIONS

IPK STANDARDS PUBLISHING HOUSE

Moscow

INTERSTATE STANDARD

Introduction date 01.01.78

This standard applies to steel sheets, hot-rolled with one-sided rhombic and lenticular corrugation for general purposes.

1. ASSORTMENT

1.1a. Sheet metal by thickness is produced:

high precision - A,

normal accuracy - B.

(Introduced additionally, Rev. No. 4).

1.1. The shape, dimensions, maximum deviations and weight of 1 m 2 of a sheet with rhombic and lenticular corrugation must correspond to those indicated in the drawing. 1, 2 and in the table.

Notes:

1. The thickness of sheets with one-sided rhombic and lenticular corrugations is determined by the thickness of the base of the sheet s in millimeters.

2 For sheets rolled on sheet rolling mills, in the middle part of the sheet width, the base thickness is allowed to be 0.2 mm above the plus limit deviation.

3. Flute base width b, angle at the top of the flute j, the diagonals of the rhombus t 1 +t 2, the angle of the corrugation on the plane of the sheet j 1 , distance between grooves t, flute length l, the radius of curvature of the flute R on finished sheets are not controlled and are given for calculations in the manufacture of tools.

4. The mass of 1 m 2 of the sheet is determined by the nominal dimensions of the sheets, the height of the corrugation, equal to 0.2 sheet thickness, the small diagonal of the rhombus, equal to 27.5 mm, the larger diagonal of the rhombus, equal to 65 mm. The density of steel is 7.85 g/cm 3 .

5. (Deleted, Rev. No. 4).

(Revised edition, Rev. No. 2, 3, 4; Amendment).

1.2. Corrugated steel is produced in sheets and rolls with one-sided rhombic or lentil corrugation.

(Revised edition, Rev. No. 3).

1.3. The height of the corrugation on the sheets should be 0.1 - 0.3 of the thickness of the base of the sheet, but not less than 0.5 mm. At the request of the consumer, sheets with a base thickness of 5 mm or more must have a corrugation height of at least 1.0 mm.

(Revised edition, Rev. No. 2).

1.4. Sheets with rhombic corrugation are made with rhombus diagonals (25-30) ´ (60-70) mm. Grooving configuration and location large diagonals rhombus along or across the sheet are installed by the manufacturer.

At the request of the consumer, it is allowed to manufacture a sheet with a different ratio of the diagonals of the rhombus.

(Changed edition, Rev. No. 2, 3).

1.5. Lenticular corrugated sheets are produced with a distance between corrugations of 20, 25 and 30 mm.

1.6. Sheets are produced in widths from 600 to 2200 mm and lengths from 1400 to 8000 mm with a gradation of 50 mm.

1.7. At the request of the consumer, it is allowed to manufacture sheets of other sizes.

1.8. Sheets are made to measure:

indicating the dimensions in thickness in accordance with the dimensions indicated in the table, and in width and length within the limits specified in paragraph 1.6 - form I;

with indication of dimensions in thickness within the limits indicated in the table, without indication of dimensions in width and length - form II;

indicating dimensions that are multiples of the width and length of the dimensions indicated by the consumer within the limits established in clause 1.6 - form III;

indicating the measured dimensions within the limits specified in paragraph 1.6 - form IV.

(Revised edition, Rev. No. 1).

1.9. Limit deviations for the length and width of sheets - according to GOST 19903

At the request of the consumer, sheets and rolls are produced with maximum deviations:

20 mm - in width for rolled products over 1000 mm with unedged edges;

15 mm - in length for a sheet over 2000 to 6000 mm and over with a thickness of 4.0 and 5.0 mm;

25 mm - with a thickness of 6.0; 8.0; 10.0 and 12.0 mm.

(Changed edition, Rev. No. 3, 4).

1.10. Deviations from flatness - according to GOST 19903 improved flatness.

(Revised edition, Rev. No. 4).

1.11. (Deleted, Rev. No. 1.)

1.12. The requirements for steel produced in coils, as well as the dimensions of the coils in width, are in accordance with GOST 19903.

Legend Examples

Hot-rolled steel sheet St3sp according to GOST 380 with one-sided rhombic corrugation measuring 3.0´1000´2000 mm, normal thickness accuracy, improved flatness with a rolled edge:

Rhombus sheet V-K-PU-3.0´1000´2000 St3sp GOST 8568-77

Lentil leaf V-K-PU-3,0´1000´2000 St3sp GOST 8568-77

Hot-rolled coil of St3sp grade according to GOST 380 with one-sided rhombic corrugation measuring 3.0×1000 mm, high precision, with a rolled edge:

Rhombus roll А-К-3,0´1000 St3sp GOST 8568-77

The same, with lentil one-sided corrugation:

Lentil roll A-K-3,0´1000 St3sp GOST 8568-77

(Changed edition, Rev. No. 2,3,4).

2. TECHNICAL REQUIREMENTS

2.1. Sheets and rolls are manufactured in accordance with the requirements of this standard according to the technological regulations approved in the prescribed manner.

2.2. Sheets and rolls are made of ordinary quality carbon steel grades St0, St1, St2 and St3 (boiling, calm and semi-quiet) with a chemical composition according to GOST 380

By agreement between the manufacturer and the consumer, it is allowed to produce sheet products without rationing the content of chromium, nickel, copper.

2.1, 2.2.(Revised edition, Rev. No. 4).

2.3. At the request of the consumer, it is allowed to manufacture sheets from steel of other grades.

(Revised edition, Rev. No. 3).

2.4. Sheets rolled on sheet rolling mills are cut off on four sides.

2.5. Sheets and coils rolled on a continuous rolling mill may be supplied with rolled longitudinal edges.

Notches present on the edges should not lead the sheet beyond the nominal dimensions in width.

2.4, 2.5.(Revised edition, Rev. No. 1).

2.6. On the surface of the sheets there should be no rolling and ingot films, dents, shells from scale, rolled bubbles, cracks and contamination. There should be no delaminations on the edges of the sheets.

2.7. On the surface of the sheets, ripples, scale, rust, imprints, individual films are allowed, the depth of which does not exceed the maximum deviations in thickness.

3. ACCEPTANCE RULES

3.1. Sheets and rolls are accepted in batches. The party consists of sheets of one type of corrugation. Batch definition - according to GOST 14637.

3.2. To control the dimensions and quality of the surface, two sheets or one roll are selected from the batch.

3.3. Upon receipt of unsatisfactory control results for at least one of the indicators, re-control is carried out on a sample selected according to GOST 7566.

4. TEST METHODS

4.1. Surface control is carried out without the use of magnifying devices.

4.2. The thickness of the base of the sheets and the height of the corrugations are measured at a distance of at least 100 mm from the corners and 40 mm from the edges.

Dimensions at any measured point should not take the sheet thickness beyond the limit deviations.

4.3. Rifle Height h is defined as the difference in dimensions of the total thickness of the sheet s+ h and sheet base thickness s.

5. MARKING, PACKAGING, TRANSPORT AND STORAGE

5.1. Marking, packaging, transportation and storage - according to GOST 7566.

1.9; 1.10; 1.12

5. The limitation of the validity period was removed according to protocol No. 7-95 of the Interstate Council for Standardization, Metrology and Certification (IUS 11-95)

6. EDITION (September 2004) with Amendments No. 1, 2, 3, 4, approved in October 1978, November 1980, June 1987, June 1989 (IUS 11-78, 1-81 , 11-87, 11-89), Amendment (IUS 2-2003)

Thickness and weight of 1m 2 corrugated sheet (GOST 8568-77)

GOST 8568-77

INTERSTATE STANDARD

TECHNICAL CONDITIONS

Official edition

IPK PUBLISHING STANDARDS Moscow

to GOST 8568-77 Steel sheets with rhombic and lenticular corrugation. Specifications

what place

Printed

Must be

Si. Change No. 3 (IUS No. 11-87) and Reissue (September 1993) with Changes No. 1, 2, 3, 4

Clause 1.1. Table, Rhombic corrugation. Column "Mass of 1 m 2 sheet, u>, For the thickness of the base of the sheet:

s - 6.0 mm s - 8.0 mm

66

66,6

Si. Reissue (December 1995) and Edition (September 2004)

with Changes No. 1, 2, 3, 4

Clause 1.1. Table. Rhombic groove. The column "Weight of 1 m 2 sheet, kg." For sheet base thickness s - 6.0 mm

(IUS Ms 122005)

INTERSTATE STANDARD

STEEL SHEETS WITH Rhombic and Lenticular Corrugation

Specifications

Corrugated steel rhombic and lentil form sheets. Specifications

MKC 77.140.50*1

Introduction date 01.01.78

This standard applies to steel sheets, hot-rolled with one-sided rhombic and lenticular corrugation for general purposes.

1. ASSORTMENT

1.1a. Rolled sheets are made according to the thickness: high accuracy - A, normal accuracy - B.

(Introduced additionally, Rev. No. 4).

1.1. The shape, dimensions, maximum deviations and weight of 1 m 2 of a sheet with rhombic and lenticular corrugation must correspond to those indicated in the drawing. 1, 2 and in the table.

Official edition

Reprint prohibited

© Standards Publishing House, 1977 IPK Standards Publishing House, 2004

6.0 8,0 10,0 12,0

6.0 8,0 10,0 12,0

1. The thickness of sheets with one-sided rhombic and lenticular corrugations is determined by the thickness of the base of the sheet s in millimeters.

2. For sheets rolled on sheet rolling mills, in the middle part of the sheet width, the base thickness is allowed to be 0.2 mm higher than the plus limit deviation.

3. The width of the corrugation base b, the angle at the top of the corrugation f, the diagonal of the rhombus / + t 2, the angle of the corrugation on the plane of the sheet f, the distance between the corrugations t, the length of the corrugations I, the radius of curvature of the corrugations R on the finished sheets are not controlled and are given for calculations in tool making.

4. The mass of 1 m 1 2 sheet is determined by the nominal dimensions of the sheets, the height of the corrugation, equal to 0.2 sheet thickness, the small diagonal of the rhombus, equal to 27.5 mm, the larger diagonal of the rhombus, equal to 65 mm. The density of steel is 7.85 g/cm 3 4 5 .

5. (Deleted, Rev. No. 4).

(Revised edition, Rev. No. 2, 3, 4, Amendment).

1.2. Corrugated steel is produced in sheets and rolls with one-sided rhombic or lentil corrugation.

1.3. The height of the grooves on the sheets should be 0.1-0.3 of the thickness of the base of the sheet, but not less than 0.5 mm. At the request of the consumer, sheets with a base thickness of 5 mm or more must have a corrugation height of at least 1.0 mm.

(Revised edition, Rev. No. 2).

1.4. Sheets with rhombic corrugation are made with rhombus diagonals (25-30) x (60-70) mm. The configuration of the corrugations and the location of the large diagonals of the rhombus along or across the sheet are set by the manufacturer.

At the request of the consumer, it is allowed to manufacture a sheet with a different ratio of the diagonals of the rhombus.

(Changed edition, Rev. No. 2, 3).

1.5. Lenticular corrugated sheets are produced with a distance between corrugations of 20, 25 and 30 mm.

1.6. Sheets are produced in widths from 600 to 2200 mm and lengths from 1400 to 8000 mm with a gradation of 50 mm.

1.7. At the request of the consumer, it is allowed to manufacture sheets of other sizes.

(Revised edition, Rev. No. 3).

1.8. Sheets are made to measure:

indicating the dimensions in thickness in accordance with the dimensions indicated in the table, and in width and length within the limits specified in paragraph 1.6 - form I;

with indication of dimensions in thickness within the limits indicated in the table, without indication of dimensions in width and length - form II;

indicating dimensions that are multiples of the width and length of the dimensions indicated by the consumer within the limits established in clause 1.6 - form III;

indicating the measured dimensions within the limits specified in paragraph 1.6 - form IV.

(Revised edition, Rev. No. 1).

1.9. Limit deviations for the length and width of sheets - according to GOST 19903.

At the request of the consumer, sheets and rolls are produced with maximum deviations;

20 mm - in width for rolled products over 1000 mm with unedged edges;

15 mm - in length for a sheet over 2000 to 6000 mm and over with a thickness of 4.0 and 5.0 mm;

25 mm - with a thickness of 6.0; 8.0; 10.0 and 12.0 mm.

(Changed edition, Rev. No. 3, 4).

1.10. Deviations from flatness - according to GOST 19903 for normal and improved flatness.

(Revised edition, Rev. No. 4).

1.11. (Deleted, Rev. No. 1).

1.12. The requirements for rolled products manufactured in rolls, as well as the dimensions of the rolls in width, are in accordance with GOST 19903.

Examples of symbols:

Hot-rolled steel sheet StZsp according to GOST 380 with one-sided rhombic corrugation measuring 3.0 x 1000 x 2000 mm, normal thickness accuracy, improved flatness with a rolled edge:

Rhombus sheet V-K-PU-3.0x 1000u. 2000 StZsp GOST 8568-77

Lentil leaf V-K-PU-3.0u 1000 y 2000 StZsp GOST 8568-77

Hot-rolled coil of StZsp brand according to GOST 380 with one-sided rhombic corrugation measuring 3.0 x 1000 mm, high precision, with a rolled edge:

Rhombus roll А-К-3.0 y 1000 StZsp GOST 8568-77

The same, with lentil one-sided corrugation:

Roll lentil A-K-3.0u 1000 StZsp GOST 8568-77.

(Changed edition, Rev. No. 2, 3, 4).

2. TECHNICAL REQUIREMENTS

2.1. Sheets and rolls are manufactured in accordance with the requirements of this standard according to the technological regulations approved in the prescribed manner.

2.2. Sheets and rolls are made of carbon steel of ordinary quality grades StO, St1, St2 and St3 (boiling, calm and semi-quiet) with a chemical composition according to GOST 380.

By agreement between the manufacturer and the consumer, it is allowed to produce sheet products without rationing the content of chromium, nickel, copper.

2.1. 2.2. (Revised edition, Rev. No. 4).

2.3. At the request of the consumer, it is allowed to manufacture sheets from steel of other grades.

(Revised edition, Rev. No. 3).

2.4. Sheets rolled on sheet rolling mills are cut off on four sides.

2.5. Sheets and coils rolled on a continuous rolling mill may be supplied with rolled longitudinal edges.

Notches present on the edges should not lead the sheet beyond the nominal dimensions in width.

2.4, 2.5. (Revised edition, Rev. No. 1).

2.6. On the surface of the sheets there should be no rolling and ingot films, dents, shells from scale, rolled bubbles, cracks and contamination. There should be no delaminations on the edges of the sheets.

2.7. On the surface of the sheets, ripples, scale, rust, imprints, individual films are allowed, the depth of which does not exceed the maximum deviations in thickness.

3. ACCEPTANCE RULES

3.1. Sheets and rolls are accepted in batches. The party consists of sheets of one type of corrugation. Batch definition - according to GOST 14637.

3.2. To control the dimensions and quality of the surface, two sheets or one roll are selected from the batch.

3.3. Upon receipt of unsatisfactory control results for at least one of the indicators, repeated control is carried out on a sample selected according to GOST 7566.

4. TEST METHODS

4.1. Surface control is carried out without the use of magnifying instruments.

4.2. The thickness of the base of the sheets and the height of the corrugations are measured at a distance of at least 100 mm from the corners and 40 mm from the edges.

Dimensions at any measured point should not take the sheet thickness beyond the limit deviations.

4.3. The corrugation height h is defined as the difference between the dimensions of the total sheet thickness s + h and the sheet base thickness s.

5. MARKING, PACKAGING, TRANSPORT AND STORAGE

5.1. Marking, packaging, transportation and storage - according to GOST 7566.

(Revised edition, Rev. No. 3).

INFORMATION DATA

1. DEVELOPED AND INTRODUCED by the Ministry of Ferrous Metallurgy of the USSR

2. APPROVED AND INTRODUCED BY Decree of the State Committee for Standards of the Council of Ministers of the USSR dated April 13, 1977 No. 926

3. REPLACE GOST 8568-57

4. REFERENCE REGULATIONS AND TECHNICAL DOCUMENTS

5. The limitation of the validity period was removed according to protocol No. 7-95 of the Interstate Council for Standardization, Metrology and Certification (IUS 11-95)

6. EDITION (September 2004) with Amendments No. 1, 2, 3, 4, approved in October 1978, November 1980, June 1987, June 1989 (IUS 11-78, 1-81 , 11-87, 11-89), Amendment (IUS 2-2003)

Editor L.I. Nakhimova Technical editor V.N. Prusakova Proofreader A. S. Chernousova Computer proofing by S. V. Ryabova

Ed. persons. No. 02354 dated 07/14/2000. Handed over to the set 20.09.2004. Signed for publication on 06.10.2004. Conditions.print.l. 0.93. Uch.-ed.l. 0.60.

Circulation 162 copies. C 4125. Order 866.

IPK Publishing house of standards, 107076 Moscow, Kolodezny per., 14. e-mail:

Typed at the Publishing House on a PC

Printed in the branch of IPK Publishing house of standards - type. Moscow Printer, 105062 Moscow, Lyalin per., 6.

Is the main state standard which governs the production steel sheets with rhombic and lenticular corrugation made by hot deformation. This standard applies to both steel and stainless steel, so if you are interested in stainless steel, this standard will be of use to you.

Having become familiar with the data normative document You will have an idea of ​​the assortment, technical requirements, acceptance rules, test methods for this type of rolled metal. This may help you choose quality products for purchase.

Assortment

The first thing that interests the buyer is the size. contains a range of sheets with rhombic and lentil corrugations. The following sizes are available for production: by thickness 2.5 to 12 mm, in width from 600 to 2200 mm, along the length from 1400 to 8000 mm with a gradation of 50 mm. However, other sizes are also allowed.

The corrugated sheet differs from the usual one by the presence of special protrusions on the surface. These protrusions have technological purpose and it is because of them that consumers buy this species rolled metal products. However, some may not know how to tell the difference between rhombic and lentil grooves.

In practice, it's very simple: just look at the pattern of the textured surface.

• With rhombic corrugation, convex lines are clearly visible on the surface, which, intersecting, form diamond-shaped niches. These raised lines have clear boundaries and are continuous throughout the dyne.
• In the case of lenticular corrugation, protrusions are arranged in a certain way on the surface of the sheet. They resemble small slides and are located at right angles to each other. These protrusions are short and more gentle.

The most popular among buyers are sheets with lentil corrugation. They have more pleasant appearance and therefore can be used to solve more tasks.

When buying, it is important to take into account that the corrugation is applied to the surface only on one side!

The standard regulates following parameters for each sheet size: thickness, width, weight of one square meter and size deviations. Parameters such as the width of the base of the flute, the angle at the top of the flute, the length of the flute, the radius of their curvature, and their location on the plane specified in the standard but not controlled. They are given as a reference for tool making.

Two manufacturing options are available for manufacturing accuracy: high(letter A in the marking) and normal accuracy(letter B in the marking). The difference between them is the amount of tolerance. For high precision products, they are much lower than for normal precision products. Therefore, if such a parameter as accuracy is important for your project, it is recommended to purchase products of category A.

You can find a list of allowable sizes and their corresponding limit deviations in the table below.

When measuring thickness, it is important to know that the thickness is considered to be the base of the sheet without taking into account the height of the corrugation.

If the product is made on sheet rolling mills, thickening of its base in the middle part is allowed. This thickening should be no more than +0.2 mm plus limit deviation.

The mass of one square meter is calculated with a corrugation height of 0.2 thickness, a small diagonal of a rhombus equal to 27.5 mm, a large diagonal of a rhombus equal to 65 mm and a steel density of 7.85 g / cm3.

It is important to know that corrugated steel with one-sided corrugation is also produced in the form of rolls.

Corrugation dimensions

As for the height of the flute, the standard states that it must be within 0.1 - 0.3 thickness, but not less than 0.5 mm. If the consumer requires thick sheets (5 mm or more), then it is allowed to increase minimum height corrugation up to 1 mm, but only by agreement.

For sheets with rhombic corrugation, the diagonals of the rhombus can have a length of (25 - 30) x (60 - 70) mm., however, it is possible to manufacture corrugations with other sizes as agreed. The location of large diagonals along or across the sheet is set by the manufacturer.

For sheets with lentil corrugations, the distance between the corrugations can be 20, 25 or 30 mm.

Limit deviations

The maximum deviations in sheet thickness can be found in the table above, but deviations in length and width are not indicated there. The standard states that they must be taken from GOST 19903 Hot-rolled sheet. Deviations from the plane must be taken from the same standard for the normal and improved plane.

If rolled products are manufactured in rolls, the requirements and dimensions of rolls must be taken from GOST 19903.

Conventions

Looking at symbol at first it is difficult to make out what all these letters and numbers mean. However, this is not as difficult as it seems at first glance.

• The first step is to label the product. The type of product is indicated: sheet or roll and type of corrugation.
• Next comes the indication of manufacturing accuracy: A - high accuracy, B - normal.
• After that, the edge type is specified. K - skating.
• Then come the dimensions: thickness x width x length (or thickness x width in the case of a roll)
• At the very end, the steel grade and GOST are indicated.

Technical requirements

Rhombic and lenticular corrugated sheets are manufactured in accordance with the requirements of carbon steel or other steel grades.

When manufacturing on a sheet rolling mill, the product is cut off from four sides.

When manufacturing on a continuous rolling mill, the presence of rolled longitudinal edges. If there are serrations on the edges, their value should not take the width of the sheet beyond the nominal dimensions.

Acceptance and Testing

After the end of the production process, it is time to accept the batches. The party must contain the rental of one type of corrugation. That is, in a batch of rhombic sheets there cannot be a single lentil. The definition of a batch must be taken from GOST 14637.

For the work necessary measurements one roll or two sheets are taken from a batch. If at least one unsatisfactory result is obtained during the quality determination process, a second stage of testing is carried out. For this stage, the sample is made according to GOST 7566.

Measurements to determine the thickness of the base and the height of the corrugations are made at a distance of at least 100 mm from the corners and 40 mm from the edges.

The height of the corrugations is determined by subtracting the thickness of the base of the sheet from the total thickness.

History of the Standard

was developed and submitted by the Ministry ferrous metallurgy of the USSR. April 13, 1977 was approved and put into effect state committee Standards of the Council of Ministers of the USSR instead of GOST 8568-57.

After the collapse of the USSR, this standard was adopted on the territory of Russia. In 1995, the Interstate Council for Standardization, Metrology and Certification removed the limitation of validity from it.