The Concentric Reducer
The Concentric Reducer
The Concentric Reducer

The Concentric Reducer

The concentric reducer is cone-shaped fitting which is used to enlarge or reduce the diameter about center line. It is easy to transport mud and grinding fluid and are suitable for corrosive operations, also beneficial to use where different ratings and to wear protection is required in...

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Product Introduction

Buttwelding Fittings are used in a piping system to change direction or function of media, to branch off, reduce pipe size or attach auxiliary equipment. They are availbale in multiple types as elbow, tee, cap, concentric reducer, stub end and oelt, that produced in cold and hot forming based on ASTM A403 and ASTM A234 specification.

ASTM A403 WP304 & 316 Stainless Steel Pipe Fittings

The specification of ASTM A403 covers common stainles steel grades WP304 & 316 that used for pressure piping. Customers need to indicate seamless or welded type while purchasing kinds grades fittings, such as concentric reducers, buttwelding tee & cross, steel pipe bend and elbow.

ASTM A234 Carbon Steel and Alloy Steel Pipe Fittings

This specifiation covers ASTM A234 carbon steel and alloy steel fittings of semaless and welded construction by the standard of ASME B16.9. These fittings are for use in pressure piping and in pressure vessel fabrication for service at moderate and elevated temperatures.

Material for Concentric Redcuer ASME B16.9

Stainless Steel Grades

ASTM A403 WP304/304L/304H, 316/316L, 310S, 317,347,904L

Carbon Steel Grades

ASTM A234 WPB/WPC, ASTM A420 WPL6, ASTM A860 WPHY 42 / 46 / 56 / 60 / 65

Alloy Steel Grades

ASTM A234 WP11 / WP12 / WP 5 / WP9 / WP91 / WP92 / WP 22

ASME B16.9 Concentric Reducer Dimensions & Sch 40 Weight

OD1	OD2	END TO END	SCH 40 WEIGHT
NPS	NPS	H	KG
3/4	3/8 - 1/2	38	0.07
1	1/2 - 3/4	51	0.14
1 1/4	1/2 - 1	51	0.19
1 1/2	1/2 - 1 1/4	64	0.29
2	3/4 - 1 1/2	76	0.46
2 1/2	1 - 2	89	0.85
3	1 1/4 - 2 1/2	102	1.11
4	2 - 3 1/2	102	1.8
5	2 - 4	127	3.05
6	2 1/2 - 5	140	4.35
8	3 1/2 - 6	152	7.12
10	4 - 8	178	11.8
12	5 - 10	203	17.8
14	6 - 12	330	34.3
16	6 - 14	356	48.3
18	8 - 16	381	65.3
20	10 - 18	508	102
22	12 - 20	508	-
24	12 - 22	508	143
26	12 - 24	610	-
28	14 - 26	610	-
30	14 - 28	610	-
32	20 - 30	610	230
34	22 - 32	610	245
36	22 - 34	610	282
38	24 - 36	610	-
40	28 - 38	610	-
42	28 - 40	610	-
44	32 - 42	610	-
46	34 - 44	711	-
48	36 - 46	711	-
52	40 - 48	711	-
56	40 - 52	711	-
60	44 - 56	711	-

Notes

1) Besides the above mentioned standards, the standards of GB/T 10752 SH 3408 SH 3409 HG/T 21635 HG/T 21631 SY/T 0510 DL/T 695 EN 10253 etc.are also applied.

2) For the concentric and eccentric reducers with the sizes larger than that listed in the above table, they will be supplied subject to the sizes agreed by purchaser and manufacturer or according to manufacturer's size.

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The Eccentric Reducer

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