Incoloy 825 Reducer Manufacturer in China

Dec 01, 2025

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Incoloy 825 reducers are fittings used to connect two pipes of different diameters in a piping system. They are manufactured from the nickel alloy Incoloy 825 through hot forming or cold forming processes and feature beveled ends for butt welding. Incoloy 825 reducers conform to ASME B16.9 dimensional standards.

 

Incoloy 825 reducers

 

Incoloy 825 exhibits excellent corrosion resistance to a variety of corrosive media, particularly in oxidizing and reducing environments. Therefore, Incoloy 825 butt welded reducers are specified for critical applications in harsh conditions in industries such as chemical, oil and gas, pharmaceutical, and power generation.

 

Incoloy 825 Pipe Reducers Specification

 

Incoloy 825 pipe reducers are buttweld fittings for connecting pipes of different diameters in corrosive and high-temperature piping systems. Below is a detailed specification sheet covering their key standards, dimensions, materials, and applications.

 

Specification Category

Details

Material Standard

ASTM B366 / ASME SB366

Dimensional Standard

ASME/ANSI B16.9, ASME B16.25, MSS-SP-43

Available Sizes

Seamless: 1/2" to 10" or 24"; Welded/Fabricated: 1/2" to 48"

Wall Thickness (Schedule)

SCH 5S, 10S, 10, 20, 40, STD, 80, XS, 160, XXS, etc.

Types

Concentric Reducer, Eccentric Reducer

info-396-123

Nominal Pipe

Size (NPS)

DN

Outside

Diameter at

Bevel

End-to-End,

H

Nominal Pipe

Size (NPS)

DN

Outside

Diameter at

Bevel

End-to-End,

H

Large

End

Small

End

Large

End

Small

End

3/4 x 1/2

20 ×15

26.7

21.3

38

5 × 4

125 ×100

141.3

114.3

127

3/4 x 3/8

20 ×10

26.7

17.3

38

5 × 3 1/2

125 ×90

141.3

101.6

127

1 × 3/4

25 ×20

33.4

26.7

51

5 × 3

125 ×80

141.3

88.9

127

1 × 1/2

25 ×15

33.4

21.3

51

5 × 2 1/2

125 ×65

141.3

73.0

127

1 1/4 × 1

32 ×25

42.2

33.4

51

5 × 2

125 × 50

141.3

60.3

127

1 1/4 ×3/4

32 ×20

42.2

26.7

51

6 × 5

150 ×125

168.3

141.3

140

1 1/4 x 1/2

32 ×15

42.2

21.3

51

6 × 4

150 ×100

168.3

114.3

140

1 1/2 x 1 1/4

40 ×32

48.3

42.2

64

6 × 3 1/2

150 ×90

168.3

101.6

140

1 1/2 × 1

40 ×25

48.3

33.4

64

6 × 3

150 ×80

168.3

88.9

140

1 1/2 x 3/4

40 ×20

48.3

26.7

64

6 × 2 1/2

150 ×65

168.3

73.0

140

1 1/2 x 1/2

40 ×15

48.3

21.3

64

8 × 6

200 ×150

219.1

168.3

152

2 ×1 1/2

50 ×40

60.3

48.3

76

8 × 5

200 ×125

219.1

141.3

152

2 ×1 1/4

50 ×32

60.3

42.2

76

8 × 4

200 ×100

219.1

114.3

152

2 × 1

50 ×25

60.3

33.4

76

8 × 3 1/2

200 ×90

219.1

101.6

152

2 ×3/4

50 ×20

60.3

26.7

76

10 × 8

250 ×200

273.0

219.1

178

2 1/2 × 2

65 ×50

73.0

60.3

89

10 × 6

250 ×150

273.0

168.3

178

2 1/2 x 1 1/2

65 ×40

73.0

48.3

89

10 × 5

250 x 125

273.0

141.3

178

2 1/2 x 1 1/4

65 ×32

73.0

42.2

89

10 × 4

250 ×100

273.0

114.3

178

2 1/2 × 1

65 ×25

73.0

33.4

89

12 × 10

300 ×250

323.8

273.0

203

3 ×2 1/2

80 ×65

88.9

73.0

89

12 × 8

300 ×200

323.8

219.1

203

3 × 2

80 ×50

88.9

60.3

89

12 × 6

300 ×150

323.8

168.3

203

3 × 1 1/2

80 ×40

88.9

48.3

89

12 × 5

300 ×125

323.8

141.3

203

3 × 1 1/4

80 ×32

88.9

42.2

89

14 × 12

350 ×300

355.6

323.8

330

3 1/2 × 3

90 ×80

101.6

88.9

102

14 × 10

350 ×250

355.6

273.0

330

3 1/2 x 2 1/2

90 ×65

101.6

73.0

102

14 × 8

350 ×200

355.6

219.1

330

3 1/2 × 2

90 ×50

101.6

60.3

102

14 × 6

350 ×150

355.6

168.3

330

3 1/2 × 1 1/2

90 ×40

101.6

48.3

102

16 × 14

400 ×350

406.4

355.6

356

3 1/2 x 2 1/4

90 ×32

101.6

42.2

102

16 × 12

400 ×300

406.4

323.8

356

4 × 3 1/2

100 ×90

114.3

101.6

102

16 × 10

400 ×250

406.4

273.0

356

4 × 3

100 ×80

114.3

88.9

102

16 × 8

400 ×200

406.4

219.1

356

4 × 2 1/2

100 ×65

114.3

73.0

102

18 × 16

450 ×400

457

406.4

381

4 × 2

100 ×50

114.3

60.3

102

18 × 14

450 ×350

457

355.6

381

4 ×1 1/2

100 ×40

114.3

48.3

102

18 × 12

18 × 10

450 ×300

450 ×250

457

457

323.8

273.0

381

381

20 × 18

500 × 450

508

457

508

36 × 34

900 × 850

914

864

610

20 × 16

500 × 400

508

406.4

508

36 × 32

900 × 800

914

813

610

20 × 14

500 × 350

508

355.6

508

36 × 30

900 × 750

914

762

610

20 × 12

500 × 300

508

323.8

508

36 × 28

36 × 26

900 × 700

900 × 650

914

914

660

610

610

610

22 × 20

550 × 500

559

508

508

         

22 × 18

550 × 450

559

457

508

38 × 36

950 × 900

965

914

610

22 × 16

550 × 400

559

406.4

508

38 × 34

950 × 850

965

864

610

22 × 14

550 × 350

559

355.4

508

38 × 32

950 × 800

965

813

610

24 × 22

600 × 550

610

559

508

38 × 30

950 × 750

965

762

610

24 × 20

600 × 500

610

508

508

38 × 28

950 × 700

965

711

610

24 × 18

600 × 450

610

457

508

38 × 26

950 × 650

965

660

610

24 × 16

600 × 400

610

406.4

508

40 × 38

1000 × 950

1016

965

610

26 × 24

650 × 600

660

610

610

40 × 34

1000 × 850

1016

864

610

26 × 22

650 × 550

660

559

610

40 × 32

1000 × 800

1016

813

610

26 × 20

650 × 500

660

508

610

40 × 30

1000 × 750

1016

762

610

26 × 18

650 × 450

660

457

610

40 × 36

1000 × 900

1016

914

610

28 × 26

700 × 650

711

660

610

42 × 40

42 × 38

1050 × 1000

1050 × 950

1067

1067

1016

965

610

610

28 × 24

700 × 600

711

610

610

42 × 36

1050 × 900

1067

914

610

28 × 22

700 × 550

711

508

610

42 × 34

1050 × 850

1067

864

610

28 × 20

700 × 500

711

457

610

42 × 32

1050 × 800

1067

813

610

30 × 28

750 × 700

762

711

610

42 × 30

1050 × 750

1067

762

610

30 × 26

750 × 650

762

660

610

44 × 42

1100 × 1050

1118

1067

610

30 × 24

750 × 600

762

610

610

44 × 40

1100 × 1000

1118

1016

610

30 × 22

750 × 550

762

508

610

44 × 38

1100 × 950

1118

965

610

32 × 30

800 × 750

813

762

610

44 × 36

1100 × 900

1118

914

610

32 × 28

800 × 700

813

711

610

46 × 44

1150 × 1100

1168

1118

711

32 × 26

800 × 650

813

660

610

46 × 42

1150 × 1050

1168

1067

711

32 × 24

800 × 600

813

610

610

46 × 40

1150 × 1000

1168

1016

711

34 × 32

850 × 800

864

813

610

46 × 38

1150 × 950

1168

965

711

34 × 30

850 × 750

864

762

610

48 × 46

1200 × 1150

1219

1168

711

34 × 28

850 × 700

864

660

610

48 × 44

1200 × 1100

1219

1118

711

34 × 26

850 × 650

864

610

610

48 × 42

48 × 40

1200 × 1050

1200 × 1000

1219

1219

1067

1016

711

711

 

Incoloy 825 Butt Weld Reducers Types

 

Incoloy Alloy 825 butt-welded reducing fittings are mainly divided into two basic types: concentric reducers and eccentric reducers. They are all manufactured according to ASME B16.9 standards and conform to ASTM B366/SB366 material specifications.

 

Incoloy 825 Concentric Reducers

 

Incoloy 825 Concentric Reducers

 

Alloy 825 concentric reducers enable vertical diameter changes in piping systems. Their symmetrical tapered structure ensures a smooth transition for fluid flow, effectively reducing turbulence and pressure drop. This design guarantees fluid direction stability and does not interfere with flow direction, making it widely used in applications requiring uniform flow.

 

Incoloy 825 Eccentric Reducers

 

Incoloy 825 Eccentric Reducers

 

Alloy 825 eccentric reducers are specifically for horizontal piping, addressing specific problems through unique "top flush" or "bottom flush" offset structures. "Top flush" reducers are typically installed at the pump suction end, effectively preventing air accumulation at the top of the pipe and thus avoiding cavitation damage to the pump.

 

"Bottom flush" reducers ensure a continuous slope at the bottom of the pipe, facilitating complete fluid discharge and preventing liquid buildup in the pipe. This is particularly important for systems requiring regular cleaning or transporting fluids prone to sediment buildup.

 

China JN Incoloy 825 Reducer Manufacturer

 

We, Jinie, are a leading Chinese manufacturer of Incoloy 825 reducers, committed to meeting diverse customer needs and providing the highest quality products.

 

We use premium raw materials and mass-produce to ensure both product quality and quantity meet standards. We always prioritize quality.

 

JN is dedicated to providing customers with the highest quality Incoloy 825 reducers and related services. Before shipment, we carefully package the reducers to ensure safe and undamaged delivery worldwide.

 

We can provide solutions for various industrial applications upon request. Our company supplies a large quantity of high-quality Incoloy 825 reducers globally, offering numerous advantages.

 

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