GOST 17378 Concentric Reducing Pipe Fittings
Product Description
Our company has various types of stamping abrasive, custom processing of various types of carbon steel / alloy steel / stainless steel concentric reducers, eccentric reducers. Reducing the standard GB, ANSI, GOST and Gezhongfeibiao products. The roundness of the reducer shall not be greater than 1% of the corresponding outside diameter, and the allowable deviation shall be 3mm.
GOST 17378 Pipe Reducer Specifications
Nominal
Dia DN
D1
D2
Lenght
Nominal
Dia DN
D1
D2
Lenght
A series
B series
A series
B series
A series
B series
A series
B series
2520
33.7
32
26.9
25
51
500350
508
529
355.6
377
508
2515
33.7
32
21.3
18
550550
559
-
508
529
508
3225
42.4
38
33.7
32
51
550450
559
-
457
478
3220
42.4
38
26.9
25
550400
559
-
406
426
3215
42.4
38
21.3
18
600500
610
630
508
529
508
4032
48.3
45
42.4
38
64
600450
610
630
457
478
4025
48.3
45
33.7
32
600400
610
630
406
426
4020
48.3
45
26.9
25
650600
660
-
610
630
610
5040
60.3
57
48.3
45
76
650500
660
-
508
529
5032
60.3
57
42.4
38
650450
660
-
457
478
5025
60.3
57
33.7
32
700600
711
720
610
630
610
6550
76.1
76
60.3
57
89
700500
711
720
508
529
6540
76.1
76
48.3
45
700450
711
720
457
478
6532
76.1
76
42.4
38
750700
762
-
711
720
610
8065
88.9
89
76.1
76
89
750600
762
-
601
630
8050
88.9
89
60.3
57
750500
762
-
508
529
8040
88.9
89
48.3
45
800700
813
820
711
720
610
10080
88.9
108
88.9
89
102
800600
813
820
610
630
10065
114.3
108
76.1
76
800500
813
820
508
529
10050
114.3
108
60.3
57
850700
864
-
711
720
610
125100
114.3
133
114.3
108
127
850600
864
-
610
630
12580
139.7
133
88.9
89
850500
864
-
508
529
12560
139.7
133
76.1
76
900800
914
920
813
820
610
150125
139.7
159
139.7
133
140
900700
914
920
711
720
150100
168.3
159
114.3
108
900600
914
920
610
630
15080
168.3
159
88.9
89
1000900
1016
1020
914
920
610
200150
168.3
219
168.3
159
152
1000800
1016
1020
813
820
200125
219.1
219
139.7
133
1000700
1016
1020
711
720
200100
219.1
219
114.3
108
10501000
1067
-
1016
1020
610
250200
219.1
273
219.1
219
178
1050900
1067
-
914
920
250125
273
273
168.3
159
1050800
1067
-
813
820
250150
273
273
139.7
133
11001000
1118
1120
1016
1020
610
300250
273
325
273
273
203
1100900
1118
1120
914
920
300200
323.9
325
219.1
219
1100800
1118
1120
813
820
300150
323.9
325
168.3
159
12001100
1220
1220
1118
1120
711
350300
323.9
377
323.9
325
330
12001000
1220
1220
1016
1020
350250
355.6
377
273
273
1200900
1220
1220
914
920
400200
355.6
377
291.1
219
13001200
1321
1320
1120
1120
711
400350
355.6
426
355.6
377
356
13001100
1321
1320
1118
1120
400300
406.4
426
323.9
325
13001000
1321
1320
1016
1020
400250
406.4
426
273
273
14001300
1420
1420
1321
1320
711
450400
406.4
478
406.4
426
381
14001200
1420
1420
1220
1220
450350
457
478
355.6
377
14001100
1420
1420
1118
1120
450300
457
478
323.6
325
15001400
1524
1520
1420
1420
711
500450
457
529
457
478
508
15001300
1524
1520
1321
1320
500400
508
529
406.4
426
15001200
1524
1520
1220
1220
High-quality products
Reducing pipe, also known as the size of head, it is a chemical pipe fittings, mainly for two different diameter connections; Concentric reducer mainly has the following characteristics: 1, when the flow of fluid in the pipeline changes, such as increased or decreased, the flow rate requirements change is not, are required to use adjustable tube. 2, into the pump inlet, in order to prevent cavitation. 3, and instruments, such as flow meters, regulating valve joints, in order to join with the instrument joints, also need to use different-diameter pipe.
Our packaging
Pipe Reducer Production Process
Pipe Reducer workshop
Production Process
http://www.pipefitting-china.com
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