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GOST 17378 Concentric Reducing Pipe Fittings

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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
Nominal Dia DN	A series	B series	A series	B series	Lenght	Nominal Dia DN	A series	B series	A series	B series	Lenght
25×20	33.7	32	26.9	25	51	500×350	508	529	355.6	377	508
25×15	33.7	32	21.3	18	51	550×550	559	-	508	529	508
32×25	42.4	38	33.7	32	51	550×450	559	-	457	478
32×20	42.4	38	26.9	25		550×400	559	-	406	426
32×15	42.4	38	21.3	18		600×500	610	630	508	529	508
40×32	48.3	45	42.4	38	64	600×450	610	630	457	478
40×25	48.3	45	33.7	32		600×400	610	630	406	426
40×20	48.3	45	26.9	25		650×600	660	-	610	630	610
50×40	60.3	57	48.3	45	76	650×500	660	-	508	529
50×32	60.3	57	42.4	38		650×450	660	-	457	478
50×25	60.3	57	33.7	32		700×600	711	720	610	630	610
65×50	76.1	76	60.3	57	89	700×500	711	720	508	529
65×40	76.1	76	48.3	45		700×450	711	720	457	478
65×32	76.1	76	42.4	38		750×700	762	-	711	720	610
80×65	88.9	89	76.1	76	89	750×600	762	-	601	630
80×50	88.9	89	60.3	57		750×500	762	-	508	529
80×40	88.9	89	48.3	45		800×700	813	820	711	720	610
100×80	88.9	108	88.9	89	102	800×600	813	820	610	630
100×65	114.3	108	76.1	76		800×500	813	820	508	529
100×50	114.3	108	60.3	57		850×700	864	-	711	720	610
125×100	114.3	133	114.3	108	127	850×600	864	-	610	630
125×80	139.7	133	88.9	89		850×500	864	-	508	529
125×60	139.7	133	76.1	76		900×800	914	920	813	820	610
150×125	139.7	159	139.7	133	140	900×700	914	920	711	720
150×100	168.3	159	114.3	108		900×600	914	920	610	630
150×80	168.3	159	88.9	89		1000×900	1016	1020	914	920	610
200×150	168.3	219	168.3	159	152	1000×800	1016	1020	813	820
200×125	219.1	219	139.7	133		1000×700	1016	1020	711	720
200×100	219.1	219	114.3	108		1050×1000	1067	-	1016	1020	610
250×200	219.1	273	219.1	219	178	1050×900	1067	-	914	920
250×125	273	273	168.3	159		1050×800	1067	-	813	820
250×150	273	273	139.7	133		1100×1000	1118	1120	1016	1020	610
300×250	273	325	273	273	203	1100×900	1118	1120	914	920
300×200	323.9	325	219.1	219		1100×800	1118	1120	813	820
300×150	323.9	325	168.3	159		1200×1100	1220	1220	1118	1120	711
350×300	323.9	377	323.9	325	330	1200×1000	1220	1220	1016	1020
350×250	355.6	377	273	273		1200×900	1220	1220	914	920
400×200	355.6	377	291.1	219		1300×1200	1321	1320	1120	1120	711
400×350	355.6	426	355.6	377	356	1300×1100	1321	1320	1118	1120
400×300	406.4	426	323.9	325		1300×1000	1321	1320	1016	1020
400×250	406.4	426	273	273		1400×1300	1420	1420	1321	1320	711
450×400	406.4	478	406.4	426	381	1400×1200	1420	1420	1220	1220
450×350	457	478	355.6	377		1400×1100	1420	1420	1118	1120
450×300	457	478	323.6	325		1500×1400	1524	1520	1420	1420	711
500×450	457	529	457	478	508	1500×1300	1524	1520	1321	1320
500×400	508	529	406.4	426	508	1500×1200	1524	1520	1220	1220

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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.

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Product Categories

Crane Steel Rail	Welding Neck Flange	ERW Steel Pipe	Long Radius Elbow
Equal Tee	45 Degree Elbow	Reducing Tee	Concentric Reducers
Eccentric Reducers	Rectangular Pipe	90 Degree Elbow	Short Radius Elbow
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GOST 17378 Concentric Reducing Pipe Fittings

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