Concentric and Eccentric Reducer

Butt Welding Pipe Fittings

Size: 1/2"-80"/DN15-DN2000

Technical: Forged and pushing

Material: Carbon Steel, Stainless Steel, Alloy Steel

Carbon Steel:ASTM, A234WPB, A234WPC, A420WPL6, Q235,10#, A3, Q235A, 20G, 16Mn, DIN St37, St45.8, St52.4, St.35.8, St.35.8.

Stainless Steel:1Cr18Ni9Ti 0Cr18Ni9 00Cr19Ni10 0Cr17Ni12Mo2Ti,00Cr17Ni14Mo2 304 304L 316 316L

Alloy Steel:16Mn Cr5Mo 12Cr1MoV 10CrMo910 15CrMo 12Cr2Mo1,A335P22 St45.8, ASTM A860 WPHY X42 X52 X60 X70

Standard: ASME/ANSI B16.9, B16.11, B16.28, JIS B2311, B2312, B2312, B2316 ASTM A403 MSS SP-43, SP-83, SP-97

Model: 45°/ 90°/180 LR/SR Elbow, Reducers, Tee, Bends, Cap, Cross.

Type: Seam Or Seamless

End: beveled end

Surface: Black Paint/Rust-proof Oil/Hot Dipped Galvanized

Wall Thickness: SCH10/10S, SCH20/20S, STD, SCH40/40S, XS, SCH80,SCH100, SCH120, SCH140, SCH160, XXS etc.(for ANSI),SGP(for JIS)

Elbow Angles: 30/45/60/90/180°

Connection: Welding

Shape:Equal, Reducing

Certificate: ISO -9001:2000, API, CCS

Application:Petrochemical & Gas industry, Power industry, Valve industry, Water works, Shipbuilding industry, Construction etc

Packing: Plywood Pallets/ Wooden Case Or As Per your Specification

MOQ: to be negotiated.

Sample: Available

Price: >>Get newest price list

Service: Customized OEM

Pakage: wooden case & pallet

Payment term: T/T or L/C

Delivery:7-30days according to order quantity.

Introduction

A reducer is a pipe coupling with a larger bore size at one end and a smaller bore size at the other end.It is used to change the flow rate in pipeline.Base on connection ways,there are 3 types of reducers :threaded reducer ,grooved reducer  and butt welding reducer.

Generally ,the butt welded reducer is made from pipes.Put a fixed length steel pipe on a conical mould,and its shape is changed by pressing down.Reducing one end or extend one end,then a welded reducer is formed.For big size reducers or low pressure welded reducers,they are made from steel coils.Rolling up the steel plate to a reducer shape,and welding them together.


What is the difference between a concentric and eccentric reducer?

The Concentric reducer two ends are centered in a line,while the Eccentric reducer have the offset center of both ends and has an edge that is parallel to the pipe.Concentric pipe reducer is used when the pipe is vertical and eccentric reducer is ofen used when the pipes are lay on a pipe rack,because of the parallel edge,it could allow the reducer and pipe next to the walls or groud with out taking up space.


ASME B16.9: Pipe Reducers

Dimensions of Recucers - ASME B16.9

NPSOD at BevelEnd-to- End, H
Large End, DSmall End,D1
3/4×1/226.721.338
 3/4x3/817.3
1×3/433.426.751
1×1/221.3
1-1/4×142.233.451
1-1/4×3/426.7
1-1/4×1/221.3
1-1/2×1-1/448.342.264
1-1/2×133.4
1-1/2×3/426.7
1-1/2×1/221.3
2×1-1/260.348.376
2×1-1/442.2
2×133.4
2×3/426.7
2-1/2×27360.389
2-1/2×1-1/248.3
2-1/2×1-1/442.2
2-1/2×133.4
3×2-1/288.97389
3×260.3
3×1-1/248.3
3×1-1/442.2
3-1/2×3101.688.9102
3-1/2×2-1/273
3-1/2×260.3
3-1/2×1-1/248.3
3-1/2×1-1/442.2
4×3-1/2114.3101.6102
4×388.9
4×2-1/273
4×260.3
4×1-1/248.3
5×4141.3114.3127
5×3-1/2101.6
5×388.9
5×2-1/273
5×260.3
6×5168.3141.3140
6×4114.3
6×3-1/2101.6
6×388.9
6×2-1/273
8×6219.1168.3152
8×5141.3
8×4114.3
8×3-1/2101.6
10×8273219.1178
10×6168.3
10×5141.3
10×4114.3
12×10323.8273203
12×8219.1
12×6168.3
12×5141.3
14×12355.6323330
14×10273
14×8219.1
14×6168.3
16×14406.4355.6356
16×12323.8
16×10273
16×8219.1
18×16457.2406.4381
18×14355.6
18×12323.8
18×10273
20×18508457.2508
20×16406.4
20×14355.6
20×12323.8
22×20558.8508508
22×18457.2
22×16406.4
22×14355.6
24×22609.6558.8508
24×20508
24×18457.2
24×16406.4
26×24660610610
26×22559
26×20508
26×18457
28×26711660610
28×24610
28×20508
28×18457
30×28762711610
30×26660
30×24610
30×20508
32×30813762610
32×28711
32×26660
32×24610
34×32864813610
34×30762
34×26660
342×4610
36×34914864610
36×32713
36×30762
36×26660
36×24610
38×36965914610
38×34864
38×32813
38×30762
38×28711
38×26660
40×38965610
40×361016914
40×34864
40×32813
40×30762
42×401016610
42×381067965
42×36914
42×34864
42×32813
42×30762
44×4211181067610
44×401016
44×38965
44×36914
46×4411681118711
46×421067
46×401016
46×38965
48×4612191168711
48×441118
48×421067
48×401016

*All dimensions are in mm unit(inch unit data sheet is also available upon request).

*Check the tolerances and materials for butt welding pipe fittings from "Price List and Techinical"

*Tolerances of dimensions are in conformance with ASME B16.9


Butt welding pipe fittings standard: 

ASME B16.49-2007 Factory-Made,Wrought Steel, Buttwelding Induction Bends for Transportation and 

ASME-B16.9-2007 Factory-Made Wrought Butt Welding Fitting

DIN2617-1991 Steel butt-welding pipe fittings

JIS G3452 SGP 1997  Steel Butt-welding pipe fittings for ordinary use

Weight for butt welding pipe fitting

Tolerances for ASME DIN JIS MSS Butt Welding Pipe Fittings

Wall Thickness Schedules (ASME B36.10 B36.19)


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