Steeply curved bends GOST 17375-2001, GOST 30753-2001


Helpful information

DN - nominal diameter; D – outer diameter at the ends of the outlet; T is the wall thickness of the outlet at the ends of the outer diameter; Tb – wall thickness of bends in non-end sections; C is the size between the centers of the ends of bends with an angle of 180°; B is the size between the plane of the ends and the point of the outer surface of the bends most distant from it with an angle of 180°; F is the size between the plane of one end and the center of the other end of bends with an angle of 90°; H - the size between the end plane and the point of intersection of the tangents to the center line at the points of its intersection with the planes of the ends of the bends with an angle of 45°; R is the radius of curvature of the center line (bending radius) of the bends; W is the size between the end plane and the point of intersection of the tangents to the center line at the points of its intersection with the planes of the ends of bends with an angle of 60°.

Buy bends, send a request - [email protected] or look at photos of bends according to GOST 17375 in the Catalog.

To calculate transportation costs for transportation of bends:

Weight of 30° bend = weight of 90° bend multiplied by a factor of 0.4.

Weight of 45° bend = weight of 90° bend multiplied by a factor of 0.5.

Weight of 60° bend = weight of 90° bend multiplied by a factor of 0.7.

Weight of 180° bend = weight of 90° bend multiplied by factor 2.
Table 1. Weight and dimensions of bends GOST 17375-01 Version 1 :

DNDT (wall)F = RHWITHINWeight, kg, 1 bend 90°
1521,32/3,2/4281456380,040,060,07
2026,92/3,2/4291458430,060,080,10
2533,72,3/3,2/4,5381876560,110,160,19
3242,42,6/3,6/5482396690,190,260,35
4048,32,6/3,6/55729114820,260,360,47
5060,32,9/4/5,676351521060,500,670,89
6576,12,9/5/7,195441901330,791,501,80
8088,93,2/5,6/8114512281591,202,102,80
100114,33,6/6,3/8,8152643042102,4045,40
125139,74,0/6,3/10190793802604,006,209,60
150168,34,5/7,1/11229954573136,501015
200219,16,3/8/12,5305127610414162031
250273,06,3/103811597625182539
300323,97,1/104571909146194056
350355,68/11533222106671157,0078
400406,48,8/12,5610254122081382,00117
450457,010,06862861372914119,00
500508,011,076231815241016162,00
600610,012,591438118281219266,00
700711,0106744421341422
800813,012195072238
900914,013725702744
10001016,015246343048

Table 2. Weight and dimensions of bends GOST 17375-01 Version 2

DNDT (wall)F = RWNWITHINWeight of 90° bend, kg
2532238221876560,1
2,50,2
30,2
3,50,2
3238248282396690,2
2,50,2
30,2
3,50,3
40,3
40452,5603525120830,3
30,3
3,50,4
40,4
50,5
50572,57543801501040,4
30,5
3,50,6
40,7
4,50,7
50,8
5,50,9
61
6576310057412001380,8
3,51
41,1
4,51,3
51,4
5,51,6
61,7
72
82,2
8089312069502401651,2
3,51,4
41,5
4,51,7
51,9
5,52,1
62,3
72,7
83
1001023,515087623002012,1
42,4
4,52,6
52,9
63,4
73,9
84,5
95
105,5
1083,52042,2
42,5
4,52,8
503,1
63,6
74,1
84,7
95,3
105,8
1143,52072,2
42,6
4,52,9
53,3
63,8
74,4
85
95,7
106,1
1251333,5190110793802573,3
43,8
4,54,3
54,8
65,7
76,5
87,4
98,2
109,1
1110
1211
1501594225130934503055,4
4,56,1
56,7
68,1
79,4
811
912
1013
1114
1216
1317
1418
16845,6
4,56,4
57,1
68,5
79,8
811,2
912,5
1014
1115
1216
1317,5
1419
200219530017312460041013
615
717
820
922
1025
1127
1229
1332
1434
1537
1639
1742
1844
250273637521715575051223
727
831
935
1039
1143
1246
1350
1454
1558
1661
1766
1870
2078
2285
300325745026018690061339
845
950
1056
1161
1266
1372
1477
1582
1687
1792
1896
20107
22118
24130
26141
28150
3503779525303217105071468
1075
1183
1290
1397
14104
15112
16119
18133
20147
22161
24175
26188
28201
30214
32228
4004268600346248120081378
987
1097
11107
12117
13126
14135
15145
16154
17164
18173
20192
22210
24230
26249
28268
30286
32306
34324
500530975043331015001015138
10153
11168
12183
13198
14212
15227
16242
17256
18270
20298
22327
24356
26385
28413
30440
32467
34494
36520
600630990051937318001215198
10219
11245
12261
13282
14302
15324
16345
17366
18387
20429
22471
24513
26554
28595
30636
32678
7007209100057740420001360248
10275
11302
12329
13356
14383
15410
16436
17462
18489
20542
22595
24647
26698
28750
30801
32852
8008209120069348524001610339
10376
11413
12450
13487
14524
15561
16598
17636
18670
20743
22815
24887
26959
281030
301101
321171

Examples of symbols for bends according to GOST 17375-2001:

Bend 90°, version 2, diameter 219 mm, wall thickness 8 mm, made of steel grade 09G2S: Bend 90-2-219x8-09G2S GOST 17375-2001

Bend 45°, version 1, diameter 60.3 mm, wall thickness 2.9 mm, made of steel grade 20: Bend 45-1-60.3x2.9-20 GOST 17375-2001
Table 3. Weight and dimensions of bends GOST 30753- 01 Version 1

DNDT (wall)FWITHINWeight, kg, 1 bend 90°
5060,34,051102810,44
6576,15,0631271020,87
8088,95,6761521211,40
100114,36,31022031592,60
125139,76,31272541974,10
150168,37,11523052376,70
200219,18,020340631313,00
250273,010,025450839126,00
300323,910,030561046737,00
350355,611,035671153352,00
400406,412,540681361077,00
450457,0457914686
500508,05081016762
600610,06101220914

Table 4. Weight and dimensions of bends GOST 30753-01 Version 2

DN D T F = R W H WITH B Weight of bend θ = 90°, kg
50 57 4 50 29 21 100 79 0,4
5 0,5
6 0,6
65 76 5 65 37 27 130 103 0,9
6 1,1
7 1,2
80 89 5 80 46 33 160 125 1,3
6 1,6
7 1,8
8 2,1
100 102 5 100 58 41 200 151 1,9
6 2,3
8 3,0
10 3,7
108 5 154 2,1
6 2,4
8 3,1
10 3,9
114 5 203 159 2,2
6 2,5
8 3,3
10 4,1
125 133 5 125 72 52 250 192 3,0
6 3,6
8 4,9
10 6,1
12 7,3
150 159 5 150 87 62 300 230 4,5
6 5,4
8 7,1
10 8,7
12 11,0
14 12,0
168 5 234 4,7
6 5,6
8 7,5
10 9,4
12 11,0
14 13,0
200 219 7 200 115 83 400 310 12,0
8 13,0
10 16,0
12 19,0
16 25,0
18 29,0
250 273 9 250 158 103 500 387 24,0
10 26,0
12 31,0
16 42,0
18 47,0
20 52,0
22 57,0
24 60,0
300 325 9 300 173 124 600 463 34,0
10 37,0
12 45,0
14 52,0
16 59,0
18 67,0
20 74,0
22 81,0
24 89,0
26 96,0
28 102,0
350 377 10 350 202 145 700 539 47,0
12 57,0
16 76,0
18 85,0
20 94,0
24 113,0
26 122,0
30 141,0
400 426 10 400 231 166 800 613 64,0
12 77,0
16 103,0
18 116,0
22 142,0
24 155,0
26 167,0
28 180,0
32 206,0
34 219,0
36 130,0
500 530 9 500 289 207 1000 765 92,0
10 102,0
12 122,0
14 143,0
16 161,0
18 184,0
20 204,0
22 223,0
24 243,0
26 262,0
28 282,0
30 300,0
32 320,0
34 340,0
36 365,0
600 630 9 600 346 248 1200 915 131,0
10 146,0
12 174,0
14 200,0
16 230,0
18 261,0
20 290,0
22 319,0
24 346,0
26 371,0
28 400,0
30 428,0
32 460,0
34 489,0
36 518,0
700 720 9 700 405 283 1400 1060 174,0
10 193,0
12 230,0
14 268,0
16 306,0
18 343,0
20 380,0
22 416,0
24 453,0
26 489,0
28 525,0
30 561,0
32 596,0
34 632,0
36 667,0
800 820 9 800 462 324 1600 1220 226,0
10 251,0
12 301,0
14 350,0
16 399,0
18 447,0
20 496,0
22 544,0
24 592,0
26 640,0
28 687,0
30 734,0
32 781,0
34 828,0
36 874,0
Notes

1 Weight is for reference only.

2 The mass of bends with θ = 60° and θ = 45° is 1.5 and 2 times less, respectively, and the mass of bends with θ = 180° is 2 times more than indicated.

Source Design, Pipeline

December 16, 2022
Back

GOST 17375-2001 Status

Designation:GOST 17375-2001
Status:active
Type:GOST
Russian name:Seamless welded pipeline parts made of carbon and low-alloy steel. Steeply curved bends, type 3D (R=1.5 DN). Design
English name:Carbon and low-alloy steel butt-welding fittings. Sharply curved bends type 3D (R=1.5 DN). Design
Date of text update:06.04.2015
Description update date:21.04.2018
Publication date:14.01.2010
Effective date:01.01.2003
Last modified date:11.01.2018
Reissue:reissue with changes 1
Area and conditions of application:This standard applies to seamless welded elbows
Instead:GOST 17375-83
List of changes:No. 1 from (reg.) “Validity period extended”

GOST 17375-01 You can view and download at the following link - GOST 17375-01

Buy bends made of stainless steel according to GOST 17375-2001

The Carbon Group company offers to buy bends in accordance with GOST 17375-01 on favorable terms. Our company has the ability to produce plugs from other steel grades, incl. 15Х5М, 08Х18Н10Т, 12Х18Н10Т, based on operating conditions, according to regulatory and technical documentation approved in the prescribed manner. Terms of purchase and delivery are agreed upon in advance. To find out prices, you can leave a request by filling out the form below or calling tel. ☎ ☎

A program for calculating, constructing and printing life-size bend patterns

To repair pipelines, it is often necessary to replace the branch. To manufacture it in a workshop, you need to know its characteristics:

If this data is provided to you, we will make an allotment based on the drawings. If any data is missing, we make a copy of the allotment.

How to make a welded bend according to the drawings?

Welded bends, consisting of links and cups, are made of pipes or sheet material, which are pre-marked in order to determine the mating lines along which the elements are cut, then joined and welded.

The template is made and marked according to it as follows: on a sheet of paper, cardboard, paronite or roofing felt, a scan of the entire element of the shaped part or its end with the mating line is drawn. Then the development is cut with scissors, forming a template, which is applied to the marked pipe and outlined with chalk; The required element or part of it is cut out using chalk.

The Excel table we offer allows you to obtain the dimensions for constructing a template (development) for the manufacture of outlet elements with any !!! characteristics.

Enter the characteristics of the bend and the length of the segments on the X axis into the yellow cells of the table and you will instantly receive the ordinates and abscissas of the construction points.

Transfer these points to paronite or cardboard and smoothly connect them together.

You have received a pattern for the extreme half-link of the bend.

We mirror the scan of the outer half-link relative to the horizontal axis and get the well-known “fish”. With its help, the middle elements of the outlet are marked.

A correctly made pattern, folded into a ring and laid on a plane, has no gaps.
When marking the links, it is necessary to keep in mind the following:
1. The number of links n, neck width b, outlet radius R must correspond to the technical conditions and the place where the fitting is installed. For example, “Technical conditions for the production and acceptance of work on the installation of gas networks in cities, towns and industrial enterprises” SN 117-60, paragraph 159, stipulate that the radii of welded bends must be at least the same diameter. The “Technical conditions for the production and acceptance of work on the installation of heating networks” SN 108-60, paragraph 125c, states that the radii of welded bends must be at least 1.5 diameters. The same TU SN 108-60, paragraph 126, stipulates that the neck width b must be at least 50 mm.

2. When using the proposed marking methods, there should be no waste or unused pipes. When cutting links from sheet material, in order to use it rationally, the links should be marked so that they are located on the sheet, as shown in Fig. 2. In this case, after cutting and welding the links, the welds will be located both on the neck and on the back of the link or cup. In cases where bends are made of thick sheet material (more than 2 mm thick), it is recommended to pre-roll the material and turn it into a pipe, and then mark, cut and weld the necessary elements.

Tip 1

. Never trust the GOST pipe diameter. Before making the template, determine the length of the template. Wrap the selected material tightly around the pipe, make a notch, unfold the future template and measure the circumference. By changing the pipe diameter value when entering the table, ensure that the measured length matches the calculated length of the template. On a pipe intended for making a branch, apply diametrically opposed generatrices with chalk. Markings and welding should be carried out with precise reference to them.

Tip 2.
Very important!!!
Pipe cutting should be done so that the cutter flame (oxygen jet) moves in the plane of the intended section. Imagine cutting sausage with a knife. This should be the cutting plane. But in practice, the cutter is always held perpendicular to the pipe and on the necks of the cut links you get flaws: on the small neck there is an undercut of metal, and on the large neck there is a “bump”. When the sectors are joined with these “bumps”, a void appears in the middle, depending on the thickness of the pipe wall. If the welder decides to leave the “bumps” and weld the voids, then by placing “bump” on “bump” you will inevitably change the length of the large neck and, as a result, the angle of withdrawal. The product will be damaged. “Blow off” the bumps or grind them off, make finishing touches by checking the template and then cut the edges for welding. Place the element on a plane - the gaps should be minimal.

Tip 3.

The links are connected according to Fig. 3, so that the links indicated by numbers are joined into one group, and by letters - into another group; then, with one turn and welding, both groups are connected. This achieves better alignment of the links, especially in cases where the pipes have some, although permissible, deviations from the correct circle in the cross-section.

The attachment contains a table with a macro that can build a product template with the characteristics you specify in full size.

Print it out and use it.

Watch the demo video

(Drawings, descriptions, formulas were taken from the book by I.Kh. Brodyansky “Marking of welded shaped parts of pipelines”, 1963)



Upon successful payment, you will immediately receive a link to download the worksheet.
I guarantee decency! Good luck in job!

Rating
( 1 rating, average 4 out of 5 )
Did you like the article? Share with friends:
For any suggestions regarding the site: [email protected]
Для любых предложений по сайту: [email protected]