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Scrap steel building specifications gost. Scrap steel construction specifications GOST Scrap steel construction specifications

Official edition

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. Yeletsky

APPROVED AND INTRODUCED BY Decree of the USSR State Committee for Construction of February 21, 1983 No. 28

UDC 621.865.2:669.14:006.354 Group Zh36

STATE STANDARD OF THE UNION OF THE SSR

STEEL BUILDING SCRAPS Specifications

Instead of GOST 1405-72

Pinch and wrecking steel bars. Specifications

Decree of the USSR State Committee for Affairs

Non-compliance with the standard is punishable by law

This standard applies to steel scrap,

used in construction in the production of construction and installation, rigging and other works.

1. TYPES AND BASIC DIMENSIONS

1.1. Scrap, depending on the purpose, should be made of the following types indicated in 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.

Reprint prohibited

Official edition

O Standards Publishing, 1983

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

1.3. Symbols of crowbars should consist of designations of the standard size of scrap and this standard.

An example of a symbol for scrap size LG15:

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

table 2

Dimensions in mm_

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.

The rest of the dimensions are hell. 3.

Mounting crowbars type LM

Standard sizes LM20, LM24, LM32 measures

LM19, LM22, LMZO

Table 3

Size											Weight, kg, no more

Common crowbars type LO

Dimensions in mm

Standard sizes L024,

Standard sizes L022, L026,

L028, L032 LOZO

Table 4

Dimensions in mm_

Size								Weight, kg, no more

2. TECHNICAL REQUIREMENTS

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

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

The requirements for the steel assortment must not be lower than the requirements established by GOST 2590-71 or GOST 2879-69.

It is allowed to produce scrap from steel grades BStb according to GOST 380-71 and from other grades, the mechanical properties of which are not lower than those of steel of the indicated grades.

2.3. Crowbars should not have cracks, sunsets, hairlines, captivity, inclusions.

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

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

2.5. The nail-pulling parts of LG-type crowbars, when pulling out nails, should not change their geometric shape and crumble. On their surfaces, after pulling out the nails, there should be no breaks, cracks and spalls.

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

2.7. Sharp edges of crowbars must be blunted.

2.8. Crowbars must be coated with Chem. Ok. prm. according to GOST 9.073-77 or BT-577 coating according to GOST 5631-79. The oxide coating must comply with GOST 9.301-78, operating conditions - group G in accordance with GOST 14007-68.

The paintwork 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 of products.

3. ACCEPTANCE RULES

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

3.2. Scrap is accepted and delivered in batches.

The batch size is determined by agreement of the parties.

The batch must consist of scraps of the same size, made from the same materials, processed according to the same technological process and simultaneously presented for acceptance according to one 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 the 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

Lot size of scrap, pcs.	control	Acceptance	rejection

3.4. A batch of scrap is accepted if the number of defective scrap 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 scrap is greater than or equal to the rejection 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 made.

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

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

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

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, while applying the sampling procedure and test methods specified in this standard.

4. CONTROL METHODS

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

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, hammered 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 9.302-79.

5. MARKING, PACKAGING, TRANSPORT AND STORAGE

5.1. On the surface of each scrap must be applied:

trademark of the manufacturer;

type or standard size of scrap;

price (in the manufacture of a product for retail).

Note. The method of applying these markings must ensure its safety during the entire service life of the scrap.

5.2. Scrap with an oxide coating must be subjected to conservation in accordance with GOST 9.014-78. The period of protection of scrap without re-preservation should be at least one year.

5.3. Scraps of the same size are stacked in packs and are tied with low-carbon steel wire according to 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. Crowbars should not move in connected packs.

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

transcript

1 STATE STANDARD OF THE UNION OF THE SSR SCRAP STEEL BUILDING SPECIFICATIONS GOST DEVELOPED BY THE MINISTRY OF CONSTRUCTION, ROAD AND UTILITY ENGINEERING PERFORMERS VV Kulagin, NI Fedorov INTRODUCED BY THE MINISTRY OF CONSTRUCTION, ROAD AND UTILITY ENGINEERING Deputy. Minister V. A. Yeletsky APPROVED AND INTRODUCED BY THE Decree of the USSR State Committee for Construction of February 21, 1983 28 Official publication USSR STATE COMMITTEE FOR CONSTRUCTION Moscow

2 UDC:669.14: Group Zh36 STATE STANDARD OF THE UNION OF THE SSR STEEL CONSTRUCTION SCRAPS Specifications Pinch and wrecking steel bars. Specifications OKP GOST Instead of GOST By Decree of the State Committee of the USSR for Construction Affairs dated February 21, 1983, 28, the introduction date is set from Page. 2 GOST Limit deviations of the dimensions of the working part of crowbars not indicated on the drawings must comply with GOST. The tolerance for the length of the crowbar should not be more than ± 1%. An example of a symbol for scrap of size LG15: LG15 GOST Crowbar-nail pullers of LG type Sizes LG16, LG20, LG24 Non-compliance with the standard is punishable by law This standard applies to steel scrap used in construction in the production of construction, installation, rigging and other works. 1. TYPES AND BASIC DIMENSIONS 1.1. Scrap, depending on the purpose, should be made of the following types indicated in Table. 1. Table 1 Type Name Purpose LG LM LO Crowbar-nail puller Assembly crowbar Ordinary crowbar For pulling out nails in the production of formwork and carpentry rocky soils, as well as at 1.2. The main dimensions of the crowbars must correspond to those indicated in the drawing. 1 8 and in table Official edition Reprint prohibited Standards Publishing House, 1983 Note. Size (45 ± 3)º - reference Sizes LG15, LP9, LG22 Fig. 2 Other dimensions according to fig. 1.

3 GOST Page 3 Table 2 Dimensions in mm Weight, N N Size D s L 1 a a 1 b l R R 1 s kg, not ±3 ±1 ±2 ± 3 ± 0.5 ±1 ± 1 more than LH.4 6 2.5 LH ,57 LG,6 7,5 2,5 LG,65 LG,9 LG,7 Standard size LG16A 4 GOST Standard size LG15A Damn. 4 Other dimensions according to fig. 3. Standard sizes LM20, LM24, LM32 measures Mounting crowbars type LM Weight not more than 0.78 kg. Type LM19, LM22, LM30 3 Weight not more than 0.8 kg. Crap. 5 Damn. 6 Other dimensions according to fig. 5.

4 GOST Page 5 Size D S L l Dimensions in mm l 1 l 2 ±3 l 3 A ±3 a 1 ±1 Table 3 R Weight, kg, max ordinary type LO Sizes LO24, Sizes LO28, L032 LO22, LO26, LO3O Chert. 7 Damn. 8 Other dimensions according to fig. 7. Page 6 GOST Table 4 Dimensions in mm Size D S L l l 1 а b Weight, kg, ±3 ±3 no more than LO.2 LO.0 LO.8 LO.7 LO.4 LO.2 2. TECHNICAL REQUIREMENTS 2.1. Scraps must be made in accordance with the requirements of this standard according to working drawings and reference samples agreed with the basic standardization organization and approved in the prescribed manner Scraps must be made of steel grades 45 or 50 according to GOST , established by GOST or GOST It is allowed to produce scrap from steel grades Bst6 according to GOST and from other grades, the mechanical properties of which are not lower than those of steel of the specified grades. Scrap should not have cracks, sunsets, hairline, captivity, inclusions. On the surface of crowbars processed by hot forging or stamping, individual dents from scale are allowed. The ends of crowbars over a length of at least 150 mm must be heat treated and have a hardness of HRC (HRC) . On their surfaces after pulling out the nails, there should be no breaks, cracks and spalls. The straightness tolerance of straight sections of crowbars should not exceed 1% of their length. The sharp edges of crowbars should be blunted. Oks. prm. according to GOST or coating BT-577 according to GOST Oxide coating must comply with GOST, operating conditions group Zh according to GOST

5 GOST Page 7 The paint coating must comply with class V according to GOST, operating conditions group VI according to GOST Other coatings that provide anti-corrosion protection of products are allowed. 3. ACCEPTANCE RULES 3.1. Scrap must be accepted by the technical control of the manufacturer. Scrap is accepted and delivered in batches. The batch size is determined by agreement of the parties. The batch must consist of scraps of the same size, made from the same materials, processed according to the same technological process and simultaneously presented for acceptance according to one document. When checking scraps for compliance with the requirements given in paragraphs. 1.1, 1.2, 2.1 (in terms of compliance with the working drawings), a two-stage control is used, for which scrap is selected from the batch in accordance with Table 8. Table 8 Size of the scrap party, pcs Control steps Volume of one sample, pcs. The volume of two samples, pcs. Acceptance number Rejection number First Second First Second First Second 4 5 First Second 6 7 First Second . Page 8 GOST If the number of defective scrap in the first sample is greater than the acceptance number, but less than the rejection number, a second sample is made. A batch of scrap is accepted if the number of defective scrap in two samples is less than or equal to the acceptance number, and rejected if the number of defective scrap in two samples is greater than or equal to the rejection number. 2.1 (in terms of compliance with standard samples), 2.3, 2.7, 2.8 must be carried out by the method of complete control. The consumer has the right to carry out a control check of the quality of scrap, while applying the sampling procedure and test methods specified in this standard. 4. CONTROL METHODS 4.1. The sizes of crowbars should be checked using measuring instruments, the measurement errors of which do not exceed: the values \u200b\u200bspecified in GOST for linear dimensions; 25% of the tolerance on the controlled size for the deviation of the shape and location of the surfaces. The mass of crowbars should be determined by weighing on the balance. Limits of permissible error in mass measurements ± 0.02 kg Continuous control of scrap is carried out visually by comparing them with standard samples. Determination of the hardness of heat-treated sections of scrap according to GOST. 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 Control of oxide coatings according to GOST MARKING, PACKAGING, TRANSPORTATION AND STORAGE 5.1 . On the surface of each scrap must be applied: the trademark of the manufacturer; type or standard size of scrap; price (in the manufacture of a product for retail). Note. The method of applying the indicated markings must ensure its safety during the entire service life of scrap. Scrap with an oxide coating must be subjected to preservation in accordance with GOST.

6 GOST Str Scraps of the same size are placed in packs and are tied with low-carbon steel wire according to GOST 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. Scraps should not be moved in bundled bundles. Upon agreement with the consumer, other packaging of scraps is allowed, ensuring their safety from mechanical damage during transportation and storage. A label in accordance with GOST should be attached to each bundle Scraps can be transported by any type of transport, 5.7. Storage of scrap according to the group of storage conditions C according to GOST

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Scrap steel construction

Specifications

Official edition

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. Yeletsky

APPROVED AND INTRODUCED BY Decree of the USSR State Committee for Construction of February 21, 1983 No. 28

UDC 621.865.2:669.14:006.354 Group Zh36

STATE STANDARD OF THE UNION OF THE SSR

STEEL BUILDING SCRAPS Specifications

Instead of GOST 1405-72

Pinch and wrecking steel bars. Specifications

Decree of the USSR State Committee for Affairs

Non-compliance with the standard is punishable by law

This standard applies to steel scrap,

used in construction in the production of construction and installation, rigging and other works.

1. TYPES AND BASIC DIMENSIONS

1.1. Scrap, depending on the purpose, should be made of the following types indicated in 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.

Reprint prohibited

Official edition

O Standards Publishing, 1983

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

1.3. Symbols of crowbars should consist of designations of the standard size of scrap and this standard.

An example of a symbol for scrap size LG15:

LG15 GOST 1405-83

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

(30*3)’

Note. Size (45 ± 3)° - reference

Sizes LG15, LP9, LG22

table 2

Dimensions in mm_

Size	D	S	L									s ± 1	Weight, kg, no 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

Standard size LG16A

Weight - no more than 0.8 kg.

Standard size LG15A

Weight - no more than 0.78 kg.

The rest of the dimensions are hell. 3.

Mounting crowbars type LM

Standard sizes LM20, LM24, LM32 measures

LM19, LM22, LMZO

Crap. 5

Table 3

Size	D	S	L								Weight, kg, no 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
L M3 O	-	30									8,2

Common crowbars type LO

Dimensions in mm

Standard sizes L024,

Standard sizes L022, L026,

L028, L032 LOZO

Table 4

Dimensions in mm_

Size	D	S	L					Weight, kg, no more
L024	24	-	1180	40	30	20	25	4,2
L022	-	22						4,0
L028	28	-	1400	55	40	25	30	6,8
L026	-	26						6,7
L032	32	-	1400	70	50	30	35	9,4
LOZO	-	30						9,2

2. TECHNICAL REQUIREMENTS

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

The requirements for the steel assortment must not be lower than the requirements established by GOST 2590-71 or GOST 2879-69.

It is allowed to produce scrap from steel grades BStb according to GOST 380-71 and from other grades, the mechanical properties of which are not lower than those of steel of the indicated grades.

2.3. Crowbars should not have cracks, sunsets, hairlines, captivity, inclusions.

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

2.4. The ends of crowbars over 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. Sharp edges of crowbars must be blunted.

The paintwork 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 of products.

3. ACCEPTANCE RULES

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

3.2. Scrap is accepted and delivered in batches.

The batch size is determined by agreement of the parties.

Table 8

Lot size of scrap, pcs.	control			Acceptance	rejection
51-90	First	8	16	0	2
51-90	Second	8	16	1	2
91-150	First	13	26	0	3
91-150	Second	13	26	3	4
151-280	First	20	40	1	4
151-280	Second	20	40	4	5
281-500	First	32	64	2	5
281-500	Second	32	64	6	7
501-1200	First	50	100	3	7
501-1200	Second	50	100	8	9

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 scrap for compliance with the requirements given in paragraphs.

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

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, while applying the sampling procedure and test methods specified in this standard.

4. CONTROL METHODS

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

values specified in GOST 8.051-81 - for linear dimensions;

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

4.2. The mass of scrap should be determined by weighing on the balance. Limits of permissible error in mass measurements ± 0.02 kg.

4.3. Continuous 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 9013-59.

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

5. MARKING, PACKAGING, TRANSPORT AND STORAGE

5.1. On the surface of each scrap must be applied:

trademark of the manufacturer;

type or standard size of scrap;

price (in the manufacture of a product for retail).

Note. The method of applying these markings must ensure its safety during the entire service life of the scrap.

5.2. Scrap with an oxide coating must be subjected to conservation in accordance with GOST 9.014-78. The period of protection of scrap without re-preservation should be at least one year.

5.3. Scraps of the same size are stacked in packs and are tied with low-carbon steel wire according to 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. Crowbars should not move in connected packs.

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 must be attached to each pack in accordance with GOST 2.601-68.

5.6. Scrap can be transported by any type of transport,

5.7. Storage of scrap - according to the group of storage conditions C in accordance with GOST 15150-69.

Approved

Decree of the Gosstroy of the USSR

STATE STANDARD OF THE UNION OF THE SSR

STEEL BUILDING SCRAPS

SPECIFICATIONS

Pinch and wrecking steel bars. Specifications

GOST 1405-83

Group G 36

OKP 48 3320

Introduction date

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 the Decree of the State Committee of the USSR for Construction of 21.02.1983 N 28.

3. Instead of GOST 1405-72.

4. Reference normative 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 steel scrap used in construction in the production of construction and installation, rigging and other works.

1. TYPES AND BASIC DIMENSIONS

1.1. Scrap, depending on the purpose, should be made of the following types indicated in Table. 1.

Table 1

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

Type │Description│Purpose

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

LG│Crowbar-nail puller│ D For pulling out nails during production

││formwork and carpentry works

LM│Mounting scrap│ For displacement and installation of assembly elements -

││ building structures during installation

││buildings and structures and in production

││rigging work

LO │ Scrap ordinary │ For loosening dense, frozen and rocky

││soils, as well as in the 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.

Crowbar-nail pullers type LG

Sizes LG16, LG20, LG24

Crap. 1

Note. Size (45 +/- 3)° - reference.

Sizes LG15, LG19, LG22

Crap. 2

The rest of the dimensions are hell. 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.

The rest of the dimensions are hell. 3.

Mounting crowbars type LM

Standard sizes LM20, LM24, LM32

Crap. 5

Standard sizes LM19, LM22, LM30

Crap. 6

The rest of the dimensions are hell. 5

Common crowbars type LO

Standard sizes LO24, LO28, LO32

Crap. 7

Standard sizes LO22, LO26, LO30

Crap. 8

The rest of the dimensions are hell. 7.

table 2

Dimensions in mm

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

Tipo-│ D │ S │ L│Н│Н │а│а│b│l│R│ R│с│Mass,

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

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

Tipo-│ D │ S │ L│l│l│l│l│а│а │R│Mass,

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

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

Tipo- │D│S│L│l│ l │а│b│Mass, 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

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

1.3. Symbols of crowbars should consist of a designation of the standard size of scrap and this standard.

An example of a symbol for scrap size LG15:

LG15 GOST 1405-83

2. TECHNICAL REQUIREMENTS

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

The requirements for the steel assortment must not be lower than the requirements established by GOST 2590 or GOST 2879.

It is allowed to produce scrap from steel grades St6ps, St6sp according to GOST 380 and from other grades, the mechanical properties of which are not lower than those of steel of the indicated grades.

2.3. Crowbars should not have cracks, sunsets, hairlines, captivity, inclusions.

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

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

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

2.7. Sharp edges of crowbars must be blunted.

2.8. Crowbars must be coated X them. Oks. prm . in accordance with GOST 9.306 or BT-577 coating in accordance with GOST 5631. The oxide coating must comply with GOST 9.301, operating conditions - group 3 in accordance with GOST 9.303.

The paintwork 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 of products.

3. ACCEPTANCE RULES

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

3.2. Scrap is accepted and delivered 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 the 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 - │Rejection -

batch │ control │ choice- │ samples, │ number │ number

crowbars, 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

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 taken.

3.5. Checking scrap 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 complete control.

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

4. CONTROL METHODS

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

The values specified in GOST 8.051 - for linear dimensions;

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

4.2. The mass of scrap should be determined by weighing on the balance.

Limits of permissible error of mass measurements +/- 0.02 kg.

4.3. Continuous 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.

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

5. MARKING, PACKAGING, TRANSPORT AND STORAGE

5.1. On the surface of each scrap must be applied:

Trademark of the manufacturer;

Type or standard size of scrap;

Price (in the manufacture of a product for retail).

Note. The method of applying these markings must ensure its safety during the entire service life of the scrap.

5.2. Scrap with an oxide coating must be subjected to conservation in accordance with GOST 9.014. Scrap protection period without carrying out reconservation must be at least one year old.

5.3. Scraps of the same size are stacked in packs and are tied with low-carbon steel wire according to 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. Crowbars should not move in connected packs.

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. Scrap can be transported by any type of transport.

5.7. Storage of scrap - according to the group of storage conditions C in accordance with GOST 15150.

Scrap steel building specifications gost. Scrap steel construction specifications GOST Scrap steel construction specifications

transcript

1. TYPES AND BASIC DIMENSIONS

2. TECHNICAL REQUIREMENTS

3. ACCEPTANCE RULES

4. CONTROL METHODS

5. MARKING, PACKAGING, TRANSPORT AND STORAGE

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