Concentric reducers are designed for connection of the pipes of process pipelines with rated pressure PN 63 and temperature from minus 20 to plus 200 ℃. The parts are made of seamless pipes in accordance with GOST 8731, GOST 8733.

Connection dimensions of concentric reducers according to GOST 17378

	Code	Dp1	Dp2	L	Tp1	Tp2	W
	31.01.025-021	25	21	30	3.2	3.2	0.07
	31.01.032-021	32	21	30	3.2	3.2	0.12
	31.01.032-025	32	25	30	3.2	3.2	0.12
	31.01.038-021	38	21	30	3.5	4	0.15
	31.01.038-025	38	25	30	3	3	0.2
	31.01.038-032	38	32	30	4	4	0.2
	31.01.045-025	45	25	30	3.5	4	0.2
	31.01.045-032	45	32	30	3	3.5	0.2
	31.01.045-038	45	38	30	3	3.5	0.2
	31.01.057-032	57	32	45	4	4.5	0.3
	31.01.057-038	57	38	45	4	4	0.3
	31.01.057-045	57	45	60	4	4	0.3
	31.01.076-045	76	45	70	4	4	0.4
	31.01.076-057	76	57	70	4	4	0.4
	31.01.089-057	89	57	75	4	4	0.6
	31.01.089-076	89	76	75	4	4	0.6
	31.01.108-057	108	57	80	4	4	0.9
	31.01.108-076	108	76	80	4	4	0.9
	31.01.108-089	108	89	80	4	4	0.9
	31.01.133-076	133	76	100	5	5	1.6
	31.01.133-089	133	89	100	5	5	1.3
	31.01.133-108	133	108	100	6	7	1.6
	31.01.159-108	159	108	130	5	6	2.3
	31.01.159-133	159	133	130	5	6	2.3
	31.01.219-159	219	159	140	9	11	4.4
	Code	Dp1	Dp2	L	Tp1	Tp2	W