House from the manufacturer GOST 1405 83 rf. Steel crowbars, construction specifications, state standard specifications. Types and main sizes

Approved

Decree of the USSR State Construction Committee

STATE STANDARD OF THE USSR UNION

STEEL CONSTRUCTION CRAWBAR

TECHNICAL CONDITIONS

Pinch and wrecking steel bars. Specifications

GOST 1405-83

Group F 36

OKP 48 3320

Date of introduction

INFORMATION DATA

1. Developed and introduced by the Ministry of Construction, Road and Municipal Engineering.

Developers: V.V. Kulagin, N.I. Fedorov.

2. Approved and put into effect by Resolution of the USSR State Committee for Construction Affairs dated February 21, 1983 N 28.

3. Instead of GOST 1405-72.

4. Reference regulatory and technical documents

──────────────────────────────────────────────┬──────────────────

──────────────────────────────────────────────┼──────────────────

GOST 2.601-68│5.5

GOST 8.051-81│4.1

GOST 9.014-78│5.2

GOST 9.032-74│2.8

GOST 9.104-79│2.8

GOST 9.301-86│2.8

GOST 9.302-88│4.6

GOST 9.303-84│2.8

GOST 9.306-85│2.8

GOST 380-88│2.2

GOST 1050-88│2.2

GOST 2590-88│2.2

GOST 2879-88│2.2

GOST 3282-74│5.3

GOST 5631-79│2.8

GOST 7829-70│1.2

GOST 9013-59│4.4

GOST 15150-69│5.7

5. Reissue.

This standard applies to scrap steel used in construction during construction, installation, rigging and other work.

1. TYPES AND MAIN DIMENSIONS

1.1. Depending on the purpose, crowbars should be made of the following types indicated in the table. 1.

Table 1

─────┬─────────────────┬──────────────────────────────────────────

Type │Name│Purpose

─────┼─────────────────┼──────────────────────────────────────────

LG│Nail crowbar│ For pulling out nails during production

││formwork and carpentry work

LM│Mounting crowbar│ For displacing and installing assembly elements

││building structures during installation

││buildings and structures and in production

││rigging work

LO│Ordinary scrap │ For loosening dense, frozen and rocky

││soils, as well as during production

││rigging work

1.2. The main dimensions of the crowbars must correspond to those indicated in the drawing. 1 - 8 and in table. 2 - 4.

LG crowbar nail pullers

Standard sizes LG16, LG20, LG24

Crap. 1

Note. Size (45 +/- 3)° is for reference.

Standard sizes LG15, LG19, LG22

Crap. 2

Other sizes - according to the devil. 1.

Standard size LG16A

Crap. 3

Weight - no more than 0.8 kg.

Standard size LG15A

Crap. 4

Weight - no more than 0.78 kg.

Other sizes - according to the devil. 3.

Mounting crowbars type LM

Standard sizes LM20, LM24, LM32

Crap. 5

Standard sizes LM19, LM22, LM30

Crap. 6

Other sizes - according to the devil. 5

Ordinary crowbars type LO

Standard sizes LO24, LO28, LO32

Crap. 7

Standard sizes LO22, LO26, LO30

Crap. 8

Other sizes - according to the devil. 7.

table 2

Dimensions in mm

─────┬───┬───┬────┬─────┬─────┬─────┬─────┬─────┬─────┬───────┬─────┬─────┬──────

Like-│ D │ S │ L│Н│Н │а│а│b│l│R│ R│с│Weight,

times- │││││1 ││1 ││││1││kg, not

measures││││+/- 5│+/- 5│+/- 3│+/- 1│+/- 2│+/- 3│+/- 0.5│+/- 1│+/- 1│more

LG16 │16 │-│320 │90│70│30│5│18│20│1.4│6│2.5│0.58

LG15 │-│15 │││││││││││0.57

─────┼───┼───┼────┼─────┼─────┼─────┼─────┼─────┼─────┼───────┼─────┼─────┼──────

LG20 │20 │-│600 │90│85│34│6│22│20│1.6│7.5│2.5│1.7

─────┼───┼───┤│││││ ││││├──────

LG19 │-│19 │││││││││││1.65

LG24 │24 │-│1000│110│100│45│8│28│30│2.1│9│3│3.9

─────┼───┼───┤│││││││││├──────

LG22 │-│22 │││││││││││3.7

Table 3

Dimensions in mm

─────┬───┬───┬────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬──────

Like-│ D │ S │ L│l│l│l│l│а│а │R│Weight,

times- │││││1 │2 │3 ││1 ││kg, not

measures││││+/- 5│+/- 5│+/- 3│+/- 3│+/- 3│+/- 1│+/- 5│more

LM20 │20 │-│560 │30│80│15│70│32│6│20│1.35

─────┼───┼───┤│││││││├──────

LM19 │-│19 │││││││││1.35

─────┼───┼───┼────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼──────

LM24 │24 │-│1180│40│100│20│90│38│8│24│4.2

─────┼───┼───┤│││││││├──────

LM22 │-│22 │││││││││3.9

LM32 │32 │-│1320│50│110│20│100│45│10│32│8.4

─────┼───┼───┤│││││││├──────

LM30 │-│30 │││││││││8.2

Table 4

Dimensions in mm

──────┬──────┬──────┬──────┬──────┬──────┬──────┬──────┬──────────

Like- │D│S│L│l│ l │а│b│Weight, kg,

size│││││1│││no more

││││+/- 5 │+/- 5 │+/- 3 │+/- 3 │

LO24│24│-│1180│40│30│20│25│4.2

LO22│-│22││││││4.0

──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────────

LO28│28│-│1400│55│40│25│30│6.8

──────┼──────┼──────┤││││├──────────

LO26│-│26││││││6.7

──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────────

LO32│32│-│1400│70│53│30│35│9.4

──────┼──────┼──────┤││││├──────────

LO30│-│30││││││9.2

Maximum deviations in the dimensions of the working part of crowbars not indicated on the drawings must comply with GOST 7829. The tolerance for the crowbar length should not be more than +/- 1%.

1.3. Symbols of crowbars must consist of the designation of the standard size of the crowbar and this standard.

Example symbol scrap size LG15:

LG15 GOST 1405-83

2. TECHNICAL REQUIREMENTS

2.1. Crowbars must be manufactured in accordance with the requirements of this standard according to working drawings and reference samples agreed upon with the base standardization organization and approved in the prescribed manner.

2.2. Crowbars must be made of steel grades 45 or 50 according to GOST 1050.

Requirements for the steel grade must be no lower than the requirements established by GOST 2590 or GOST 2879.

It is allowed to produce crowbars from steel grades St6ps, St6sp in accordance with GOST 380 and from other grades whose mechanical properties are not lower than those of steel of the indicated grades.

2.3. Crowbars should not have cracks, sunsets, hairs, caps, or inclusions.

On the surface of scrap processed by hot forging or stamping, isolated dents from scale are allowed.

2.4. The ends of crowbars with a length of at least 150 mm must be heat treated and have a hardness of 40...47 (HRC 38...46).

2.5. The nail parts of LG type crowbars should not change their geometric shape or crumble when pulling out nails. There should be no kinks, cracks or chips on their surfaces after pulling out the nails.

2.6. The straightness tolerance of straight sections of crowbars should not exceed 1% of their length.

2.7. The sharp edges of crowbars must be dulled.

2.8. Crowbars must have an X coating. Oks. prm . according to GOST 9.306 or BT-577 coating according to GOST 5631. The oxide coating must comply with GOST 9.301, operating conditions - group 3 according to GOST 9.303.

The paint and varnish coating must comply with class V according to GOST 9.032, operating conditions - group U1 according to GOST 9.104.

It is allowed to use other coatings that provide anti-corrosion protection for products.

3. ACCEPTANCE RULES

3.1. Scraps must be accepted by the technical control of the manufacturer.

3.2. Acceptance and delivery of scrap is carried out in batches.

The batch size is determined by agreement of the parties.

The batch must consist of scrap of the same standard size, made from the same materials, processed using the same technological process and simultaneously presented for acceptance using the same document.

3.3. When checking scrap for compliance with the requirements given in paragraphs. 1.1, 1.2, 2.1 (in terms of compliance with working drawings), 2.4 - 2.6, two-stage control is used, for which scrap is selected from the batch in accordance with Table. 5.

Table 5

────────────┬──────────┬──────────┬───────────┬─────────┬─────────

Size│Steps│Volume one- │Volume two │Acceptance - │Brakovoch -

batch│control│elective-│samples,│number│number

scraps, pcs. ││ki, pcs.│pcs.││

51 - 90│First│8│16│0│2

│Second│8││1│2

────────────┼──────────┼──────────┼───────────┼─────────┼─────────

91 - 150│First│13│26│0│3

├──────────┼──────────┤├─────────┼─────────

│Second│13││3│4

────────────┼──────────┼──────────┼───────────┼─────────┼─────────

151 - 280│First│20│40│1│4

│Second│││4│5

────────────┼──────────┼──────────┼───────────┼─────────┼─────────

281 - 500│First│32│64│2│5

├──────────┤│├─────────┼─────────

│Second│││6│7

────────────┼──────────┼──────────┼───────────┼─────────┼─────────

501 - 1200│First│50│100│3│7

├──────────┤│├─────────┼─────────

│Second│││8│9

3.4. A batch of scrap is accepted if the number of defective scraps in the first sample is less than or equal to the acceptance number, and rejected without assigning a second sample if the number of defective scraps is greater than or equal to the acceptance number.

If the number of defective scraps in the first sample is greater than the acceptance number, but less than the rejection number, a second sample is carried out.

A batch of scrap is accepted if the number of defective scraps in two samples is less than or equal to the acceptance number, and rejected if the number of defective scraps in two samples is greater than or equal to the rejection number.

3.5. Checking crowbars for compliance with the requirements given in paragraphs. 2.1 (in terms of compliance with standard samples), 2.3, 2.7, 2.8 should be carried out by the method of continuous control.

3.6. The consumer has the right to carry out a control check of the quality of scrap, using the sampling procedure and test methods specified in this standard.

4. CONTROL METHODS

4.1. The dimensions of crowbars must be checked using measuring instruments, the measurement errors of which do not exceed:

The values specified in GOST 8.051 are for linear dimensions;

25% of the tolerance for the controlled size - for deviations in the shape and location of surfaces.

4.2. The mass of crowbars should be determined by weighing on a scale.

The permissible error limits for mass measurements are +/- 0.02 kg.

4.3. Complete control of scrap is carried out visually - by comparing them with standard samples.

4.4. Determination of the hardness of heat-treated sections of scrap - according to GOST 9013.

4.5. The strength of the nail part of the crowbars (clause 2.5) is checked by alternately pulling out 5 nails with a diameter of 4 or 5 mm and a length of 120 to 150 mm, driven to a depth of 100 to 125 mm into birch or other wood of similar hardness.

4.6. Control of oxide coatings - according to GOST 9.302.

5. LABELING, PACKAGING, TRANSPORTATION AND STORAGE

5.1. The following must be applied to the surface of each scrap:

Trademark of the manufacturer;

Scrap type or size;

Price (when manufacturing a product for retail).

Note. The method of applying the indicated markings must ensure its preservation throughout the entire service life of the crowbars.

5.2. Scraps with an oxide coating must be preserved in accordance with GOST 9.014. The period of protection of scrap without carrying out re-preservation must be at least one year.

5.3. Scraps of the same standard size are placed in bundles and tied with low-carbon steel wire in accordance with GOST 3282 in at least two places.

To avoid damage to the coating on the surface of the crowbars, thick paper should be placed under the wire. In bundled bundles, crowbars should not move.

5.4. By agreement with the consumer, other packaging of scrap is allowed, ensuring their safety from mechanical damage during transportation and storage.

5.5. A label in accordance with GOST 2.601 must be attached to each pack.

5.6. Scraps can be transported by any type of transport.

5.7. Storage of scrap - according to storage conditions group C according to GOST 15150.

Official publication

USSR STATE COMMITTEE FOR CONSTRUCTION

DEVELOPED by the Ministry of Construction, Road and Municipal Engineering

PERFORMERS

V.V. Kulagin, N.I. Fedorov INTRODUCED by the Ministry of Construction, Road and Municipal Engineering

Deputy Minister V. A. Eletsky

APPROVED AND ENTERED INTO EFFECT by Resolution of the USSR State Committee for Construction Affairs dated February 21, 1983 No. 28

UDC 621.865.2:669.14:006.354 Group Zh36

STATE STANDARD OF THE USSR UNION

STEEL CONSTRUCTION CRAWBAR Technical specifications

Instead of GOST 1405-72

Pinch and wrecking steel bars. Specifications

By resolution of the USSR State Committee for Affairs

Failure to comply with the standard is punishable by law

This standard applies to scrap steel,

used in construction during construction, installation, rigging and other works.

1. TYPES AND MAIN DIMENSIONS

1.1. Depending on the purpose, crowbars should be made of the following types indicated in the table. 1.

Table 1_

1.2. The main dimensions of the crowbars must correspond to those indicated in the drawing. 1-8 and in table. 2-4.

Reproduction is prohibited

Official publication

O Standards Publishing House, 1983

The maximum deviations in the dimensions of the working part of the crowbars indicated in the drawings must comply with GOST 7829. The tolerance for the crowbar length should not be more than ±1%.

1.3. The symbols for crowbars must consist of the standard size of the crowbar and this standard.

An example of a symbol for scrap of standard size LG15:

Crowbar nail pullers type LG Standard sizes LG16, LG20, LG24

table 2

Dimensions in mm_

Standard size

Weight, kg, no more

Standard size LG16A

Weight - no more than 0.8 kg.

Standard size LG15A

Weight - no more than 0.78 kg.

Other sizes - according to the devil. 3.

Mounting crowbars type LM

Standard sizes LM20, LM24, LM32 measures

LM19, LM22, LMZO

Table 3

Standard size											Weight, kg, no more

Ordinary crowbars type LO

Dimensions in mm

Standard sizes L024,

Standard sizes L022, L026,

L028, L032 LOZO

Table 4

Dimensions in mm_

Standard size								Weight, kg, no more

2. TECHNICAL REQUIREMENTS

2.2. Crowbars must be made of steel grades 45 or 50 according to GOST 1050-74.

Requirements for the steel assortment must be no lower than the requirements established by GOST 2590-71 or GOST 2879-69.

It is allowed to produce crowbars from steel grades BStb in accordance with GOST 380-71 and from other grades whose mechanical properties are not lower than those of the steel grades indicated.

2.3. Crowbars should not have cracks, sunsets, hairs, caps, or inclusions.

On the surface of scrap processed by hot forging or stamping, isolated dents from scale are allowed.

2.4. The ends of crowbars with a length of at least 150 mm must be heat treated and have a hardness of HRC 40. .47 (HRC 38...46).

2.6. The straightness tolerance of straight sections of crowbars should not exceed 1% of their length.

2.7. The sharp edges of crowbars must be dulled.

2.8. Scraps must have a chemical coating. Okay. prm. according to GOST 9.073-77 or coating BT-577 according to GOST 5631-79. The oxide coating must comply with GOST 9.301-78, operating conditions - group Zh according to GOST 14007-68.

The paint and varnish coating must comply with class V according to GOST 9.032-74, operating conditions - group VI according to GOST 9.104-79.

It is allowed to use other coatings that provide anti-corrosion protection for products.

3. ACCEPTANCE RULES

3.1. Scraps must be accepted by the technical control of the manufacturer.

3.2. Acceptance and delivery of scrap is carried out in batches.

The batch size is determined by agreement of the parties.

3.3. When checking scrap for compliance with the requirements given in paragraphs. 1.1, 1.2, 2.1 (in terms of compliance with working drawings), 2.4-2.6, two-stage control is used, for which scrap is selected from the batch in accordance with Table. 8.

Table 8

Scrap lot size, pcs.	control	Acceptance	Rejection

If the number of defective scraps in the first sample is greater than the acceptance number, but less than the rejection number, a second sample is made.

3.5. Checking crowbars for compliance with the requirements given in paragraphs.

2.1 (in terms of compliance with standard samples), 2.3, 2.7, 2.8 should

carried out using the continuous control method.

3.6. The consumer has the right to carry out a control check of the quality of scrap, using the sampling procedure and test methods specified in this standard.

4. CONTROL METHODS

4.1. The dimensions of crowbars must be checked using measuring instruments, the measurement errors of which do not exceed:

4.6. Control of oxide coatings - according to GOST 9.302-79.

5. LABELING, PACKAGING, TRANSPORTATION AND STORAGE

5.1. The following must be applied to the surface of each scrap:

manufacturer's trademark;

scrap type or size;

price (when manufacturing a product for retail).

Note. The method of applying the indicated markings must ensure its preservation throughout the entire service life of the crowbars.

5.2. Scraps with an oxide coating must be preserved in accordance with GOST 9.014-78. The period of protection of scrap without re-preservation must be at least one year.

5.3. Scraps of the same standard size are placed in bundles and tied with low-carbon steel wire in accordance with GOST 3282-74 in at least two places.

To avoid damage to the coating on the surface of the crowbars, thick paper should be placed under the wire. In bundled bundles, crowbars should not move.

5.4. By agreement with the consumer, other packaging of scrap is allowed, ensuring their safety from mechanical damage during transportation and storage.

Official publication

USSR STATE COMMITTEE FOR CONSTRUCTION

DEVELOPED by the Ministry of Construction, Road and Municipal Engineering

PERFORMERS

V.V. Kulagin, N.I. Fedorov INTRODUCED by the Ministry of Construction, Road and Municipal Engineering

Deputy Minister V. A. Eletsky

APPROVED AND ENTERED INTO EFFECT by Resolution of the USSR State Committee for Construction Affairs dated February 21, 1983 No. 28

UDC 621.865.2:669.14:006.354 Group Zh36

STATE STANDARD OF THE USSR UNION

STEEL CONSTRUCTION CRAWBAR Technical specifications

Instead of GOST 1405-72

Pinch and wrecking steel bars. Specifications

By resolution of the USSR State Committee for Affairs

Failure to comply with the standard is punishable by law

This standard applies to scrap steel,

used in construction during construction, installation, rigging and other works.

1. TYPES AND MAIN DIMENSIONS

1.1. Depending on the purpose, crowbars should be made of the following types indicated in the table. 1.

Table 1_

1.2. The main dimensions of the crowbars must correspond to those indicated in the drawing. 1-8 and in table. 2-4.

Reproduction is prohibited

Official publication

O Standards Publishing House, 1983

The maximum deviations in the dimensions of the working part of the crowbars indicated in the drawings must comply with GOST 7829. The tolerance for the crowbar length should not be more than ±1%.

1.3. The symbols for crowbars must consist of the standard size of the crowbar and this standard.

An example of a symbol for scrap of standard size LG15:

Crowbar nail pullers type LG Standard sizes LG16, LG20, LG24

table 2

Dimensions in mm_

Standard size

Weight, kg, no more

Standard size LG16A

Weight - no more than 0.8 kg.

Standard size LG15A

Weight - no more than 0.78 kg.

Other sizes - according to the devil. 3.

Mounting crowbars type LM

Standard sizes LM20, LM24, LM32 measures

LM19, LM22, LMZO

Table 3

Standard size											Weight, kg, no more

Ordinary crowbars type LO

Dimensions in mm

Standard sizes L024,

Standard sizes L022, L026,

L028, L032 LOZO

Table 4

Dimensions in mm_

Standard size								Weight, kg, no more

2. TECHNICAL REQUIREMENTS

2.2. Crowbars must be made of steel grades 45 or 50 according to GOST 1050-74.

Requirements for the steel assortment must be no lower than the requirements established by GOST 2590-71 or GOST 2879-69.

It is allowed to produce crowbars from steel grades BStb in accordance with GOST 380-71 and from other grades whose mechanical properties are not lower than those of the steel grades indicated.

2.3. Crowbars should not have cracks, sunsets, hairs, caps, or inclusions.

On the surface of scrap processed by hot forging or stamping, isolated dents from scale are allowed.

2.4. The ends of crowbars with a length of at least 150 mm must be heat treated and have a hardness of HRC 40. .47 (HRC 38...46).

2.6. The straightness tolerance of straight sections of crowbars should not exceed 1% of their length.

2.7. The sharp edges of crowbars must be dulled.

The paint and varnish coating must comply with class V according to GOST 9.032-74, operating conditions - group VI according to GOST 9.104-79.

It is allowed to use other coatings that provide anti-corrosion protection for products.

3. ACCEPTANCE RULES

3.1. Scraps must be accepted by the technical control of the manufacturer.

3.2. Acceptance and delivery of scrap is carried out in batches.

The batch size is determined by agreement of the parties.

3.3. When checking scrap for compliance with the requirements given in paragraphs. 1.1, 1.2, 2.1 (in terms of compliance with working drawings), 2.4-2.6, two-stage control is used, for which scrap is selected from the batch in accordance with Table. 8.

Table 8

Scrap lot size, pcs.	control	Acceptance	Rejection

If the number of defective scraps in the first sample is greater than the acceptance number, but less than the rejection number, a second sample is made.

3.5. Checking crowbars for compliance with the requirements given in paragraphs.

2.1 (in terms of compliance with standard samples), 2.3, 2.7, 2.8 should

carried out using the continuous control method.

3.6. The consumer has the right to carry out a control check of the quality of scrap, using the sampling procedure and test methods specified in this standard.

4. CONTROL METHODS

4.1. The dimensions of crowbars must be checked using measuring instruments, the measurement errors of which do not exceed:

4.6. Control of oxide coatings - according to GOST 9.302-79.

5. LABELING, PACKAGING, TRANSPORTATION AND STORAGE

5.1. The following must be applied to the surface of each scrap:

manufacturer's trademark;

scrap type or size;

price (when manufacturing a product for retail).

Note. The method of applying the indicated markings must ensure its preservation throughout the entire service life of the crowbars.

5.2. Scraps with an oxide coating must be preserved in accordance with GOST 9.014-78. The period of protection of scrap without re-preservation must be at least one year.

5.3. Scraps of the same standard size are placed in bundles and tied with low-carbon steel wire in accordance with GOST 3282-74 in at least two places.

To avoid damage to the coating on the surface of the crowbars, thick paper should be placed under the wire. In bundled bundles, crowbars should not move.

5.4. By agreement with the consumer, other packaging of scrap is allowed, ensuring their safety from mechanical damage during transportation and storage.

STATE STANDARDS OF THE USSR UNION

CONSTRUCTION TOOLS

Official publication

Moscow PUBLISHING HOUSE OF STANDARDS 1994

If the number of defective scraps in the first sample is greater than the acceptance number, but less than the rejection number, a second sample is carried out.

3.6. The consumer has the right to carry out a control check of the quality of scrap, using the sampling procedure and test methods specified in this standard.

4. CONTROL METHODS

4.1. The dimensions of crowbars must be checked using measuring instruments, the measurement errors of which do not exceed:

4.6. Control of oxide coatings - according to GOST 9.302.

5. LABELING, PACKAGING, TRANSPORTATION AND STORAGE

5.1. The following must be applied to the surface of each scrap:

Trademark of the manufacturer;

Scrap type or size;

Price (if the product is manufactured for retail).

Note. The method of applying the indicated markings must ensure its preservation throughout the entire service life of the crowbars

5.2. Scraps with an oxide coating must be preserved in accordance with GOST 9.014. The period of protection of scrap without re-preservation must be at least one year.

5.3. Scraps of the same standard size are placed in bundles and tied with low-carbon steel wire in accordance with GOST 3282 in at least two places.

To avoid damage to the coating on the surface of the crowbars, thick paper should be placed under the wire. In bundled bundles, crowbars should not move.

5.4. By agreement with the consumer, other packaging of scrap is allowed, ensuring their safety from mechanical damage during transportation and storage.

5.5. A label in accordance with GOST 2.601 must be attached to each pack.

5.6. Scraps can be transported by any type of transport.

5.7. Storage of scrap - according to storage conditions group C according to GOST 15150.

INFORMATION DATA

1. DEVELOPED AND INTRODUCED by the Ministry of Construction, Road and Municipal Engineering

DEVELOPERS

V. V. Kulagin, N. I. Fedorov

2. APPROVED AND ENTERED INTO EFFECT by Resolution of the USSR State Committee for Construction Affairs dated 02.21.83 No. 28

4. REFERENCE REGULATIVE AND TECHNICAL DOCUMENTS

	Item number		Item number

5. REISSUE

FROM THE PUBLISHER

All changes adopted before the specified deadline have been included in the standards.

Current information on newly approved and revised standards, as well as changes adopted to them, is published in the monthly information index “State Standards”.

„ 2103000000-019 „

From 085 (02)-94 Without announcement -

Group Zh36

STATE STANDARD OF THE USSR UNION

STEEL CONSTRUCTION CRAWBAR Technical specifications

Pinch and wrecking steel bars. Specifications

Date of introduction 01/01/84

This standard applies to scrap steel used in construction during construction, installation, rigging and other work.

1. TYPES AND MAIN DIMENSIONS

1.1. Depending on the purpose, crowbars should be made of the following types indicated in the table. 1.

Table 1

1.2. The main dimensions of the crowbars must correspond to those indicated in the drawing. 1-8 and in table. 2-4.

Maximum deviations in the dimensions of the working part of crowbars not indicated on the drawings must comply with GOST 7829. The tolerance on scrap length should not be more than ±1%.

Official publication Reproduction prohibited

1.3. Symbols of crowbars must consist of the designation of the standard size of the crowbar and this standard.

An example of a symbol for scrap of standard size LG15:

table 2

Dimensions in mm

Weight, kg. no more

Standard size LG16A

Other sizes - according to the devil. 5

Table 3

Dimensions in mm

											Weight, kg. no more

Ordinary crowbars type LO

Standard sizes L 024, L028, L032

Standard sizes L022, L026, L 030

Other sizes - according to the devil. 7.

Table 4

Dimensions in mm

								Weight, kg. no more

2. TECHNICAL REQUIREMENTS

2.2. Crowbars must be made of steel grades 45 or 50 according to GOST 1050.

Requirements for the steel assortment must be no lower than the requirements established by GOST 2590 or GOST 2879.

It is allowed to produce crowbars from steel grades Stbps, Stbsp in accordance with GOST 380 and from other grades whose mechanical properties are not lower than those of steel of the indicated grades.

2.3. Crowbars should not have cracks, sunsets, hairs, caps, or inclusions.

On the surface of scrap processed by hot forging or stamping, isolated dents from scale are allowed.

2.4. The ends of crowbars with a length of at least 150 mm must be heat-treated and have a hardness of 40 ... 47 HRC 3 (HRC 38 ... 46).

2.6. The straightness tolerance of straight sections of crowbars should not exceed 1% of their length.

2.7. The sharp edges of crowbars must be dulled.

2.8. Scraps must have a chemical coating. Okay. prm. according to GOST 9.306 or coating BT-577 according to GOST 5631. The oxide coating must comply with GOST 9.301, operating conditions - group 3 according to GOST 9.303.

The paint and varnish coating must comply with class V according to GOST 9.032, operating conditions - group U1 according to GOST 9.104.

It is allowed to use other coatings that provide anti-corrosion protection for products.

3. ACCEPTANCE RULES

3.1. Scraps must be accepted by the technical control of the manufacturer.

3.2. Acceptance and delivery of scrap is carried out in batches.

The batch size is determined by agreement of the parties.

3.3. When checking scrap for compliance with the requirements given in paragraphs. 1.1, 1.2, 2.1 (in terms of compliance with working drawings), 2.4-2.6, two-stage control is used, for which scrap is selected from the batch in accordance with Table. 5.

Table 5

Scrap lot size, pcs.	control	Volume of one sample, pcs.	Volume of two samples, pcs.	Acceptance	Rejection

Hand construction tools - 1

General information
Brand (type) P 1-10

Weight, kg 0.49

OKP code 148000

Characteristics

General information
Brand (type) P 1-12
GOST, TU TU 14-579-52-2000 GOST 19597
Weight, kg 0.66
Manufacturers: Revyakinsky Metal Rolling Plant LLC
OKP code 148000

Characteristics

Purpose: For cleaning and loosening the area.
Technical characteristics Material - st3ps
Description With the tooth turned. Metal parts are powder coated (blue, red, green) or painted with BT varnish

General information
Brand (type) P 1-4
GOST, TU TU 14-579-52-2000 GOST 19569
Weight, kg 0.27
Manufacturers: Revyakinsky Metal Rolling Plant LLC
OKP code 148000

Characteristics

Purpose For cleaning and loosening the territory
Technical characteristics Material - st3ps
Description With the tooth turned. Metal parts are powder coated (blue, red, green) or painted with BT varnish

General information
Brand (type) P 1-6
GOST, TU TU 14-579-52-2000 GOST 19569
Weight, kg 0.34
Manufacturers: Revyakinsky Metal Rolling Plant LLC
OKP code 148000

Characteristics

General information
Brand (type) LM-25
GOST, TU TU 14-579-62-2001 GOST 1405-83
Weight, kg 4.90
Diameter, mm 25
Manufacturers: Revyakinsky Metal Rolling Plant LLC
OKP code 483323

Characteristics

General information
Brand (type) LO-25
GOST, TU TU 14-579-42-97 GOST 1405-83
Weight, kg 4.80
Diameter, mm 25
Manufacturers: Revyakinsky Metal Rolling Plant LLC
OKP code 483321

Characteristics

Purpose Used for soil development.
Technical characteristics Material - st6ps/sp, st45

General information
Brand (type) LG-20
GOST, TU GOST 1405-83, TU 14-579-62-2001, TU 3926.044.53581936-2005
Weight, kg 1.60
Diameter, mm 20

Developer Scientific and Production Association of the All-Union Research and Design Institute of Mechanized and Manual Construction and Installation Tools, Vibrators and Construction and Finishing Machines
OKP code 483322

Characteristics

Technical characteristics The scrap must be made of round steel grades 45 or 50. The ends of the scrap at a length of at least 150 mm must be heat treated and have a hardness of HRC 40...46. The scrap must have a protective coating. Shape, main dimensions and technical requirements according to GOST 1405-72.

General information
Brand (type) LG-16
GOST, TU GOST 1405-83, TU 3926.044.53581936-2005
Diameter, mm 16
Manufacturers LLC "Kamyshin plant of metalworking tools"
OKP code 483322

Characteristics

Purpose The crowbar is used to pull out nails during formwork and carpentry work.
Technical characteristics Material - st5, st6, st45, st50

General information
Brand (type) LGR-1
GOST, TU TU 14-579-92-2005 GOST 19596-87
Weight, kg 0.98
Manufacturers: Revyakinsky Metal Rolling Plant LLC
OKP code 148920

Characteristics

Purpose Used for digging or throwing earth, sand, crushed stone and other bulk materials
Technical characteristics Steel grade 37-53 HRC, painted with enamel. The dimensions of the working part are 285x210 mm. Steel construction without handle. The canvases are processed and sharpened. Mining shovel. The internal working surface has a wide shape, due to which a larger volume of soil or other working material is captured

General information
Brand (type) LD
GOST, TU TU 14-579-04-89 GOST 19596-87
Weight, kg 0.63
Manufacturers: Revyakinsky Metal Rolling Plant LLC
OKP code 148923

Characteristics

Purpose -

Description Steel construction without handle. The canvases are processed and sharpened. Metal parts are powder coated (blue, red, green) or painted with BT varnish. Country shovel with heat treatment. This type of shovel, due to its small overall dimensions and light weight, is especially popular among motorists and people interested in tourism, fishing, and hunting. In addition, it is very convenient for women to use and is used in hard-to-reach places

General information
Brand (type) LKLO
GOST, TU TU 14-579-26-92 GOST 19596-87
Weight, kg 0.59
Manufacturers: Revyakinsky Metal Rolling Plant LLC
OKP code 148920

Characteristics

Purpose -
Technical characteristics Material - st5ps/sp.
Description Steel construction without handle. The canvases are processed and sharpened. Metal parts are powder coated (blue, red, green) or painted with BT varnish. The lightweight amateur digging shovel is equipped with 4 cutouts in the blade, as a result of which it has less weight and is especially convenient when working with clay and wet soil

General information
Brand (type) LKO-3
GOST, TU TU 14-579-31-94 GOST 19596-87
Weight, kg 0.81
Manufacturers: Revyakinsky Metal Rolling Plant LLC
OKP code 148920

Characteristics

Purpose -
Technical characteristics Material - st5ps/sp.
Description Steel construction without handle. The canvases are processed and sharpened. Metal parts are powder coated (blue, red, green) or painted with BT varnish. A pointed digging shovel of this type is the most common. A universal shovel, suitable for all types of work, subject to heat treatment, as a result of which it acquires greater strength and durability of use in the area of the working part of the steel blade

General information
Brand (type) LKO-4
GOST, TU GOST 19596-87
Width, mm 210
Height, mm 405
Weight, kg 0.81
Manufacturers: Revyakinsky Metal Rolling Plant LLC
OKP code 148920

Characteristics

Purpose -
Technical characteristics Material - st5ps/sp
Description Steel construction without handle. The canvases are processed and sharpened. A pointed digging shovel with a stiffening rib on the crown. A universal shovel, heat-treated, thanks to the stiffening rib, has higher bending strength characteristics in the area of the transition from the toe to the steel blade

House from the manufacturer GOST 1405 83 rf. Steel crowbars, construction specifications, state standard specifications. Types and main sizes

ISBN 5-7050-0310-2 © Standards Publishing House, 1994

Ordinary crowbars type LO

Hand construction tools - 1