AL-6XN® Alloy Reducers

Central States Industrial (CSI) stocks concentric and eccentric reducers in corrosion-resistant superalloy AL-6XN  with Tri-Clamp® or butt weld connections. Choose from a variety of connections combinations to find the reducer that fits your process.

For applications that require 3-A sanitary standards or ASME-BPE standards, CSI stocks Reducers for Food, Dairy, & Beverage and BPE Reducers in 304 and 316L. We also offer Hastelloy® C-22® Reducers for more corrosion resistance.

Dimensions are consistent with industry standards.

Surface Finish Options
Finish Code Product Contact Surface

(Max Ra)*

Product Contact Surface Finish Treatment

(ID)

Non-Product Contact Surface

(Max Ra)

Non-Product Contact Surface Finish Treatment

(OD)

-P7 32 µ-inch
(0.8 µm)
Mechanical Polish/As drawn 32 µ-inch
(0.8 µm)
Mechanical Polish/As drawn
-7 32 µ-inch
(0.8 µm)
Mechanical Polish/As drawn 32 µ-inch
(0.8 µm)
Mechanical Polish/As drawn
-P25 25 µ-inch
(0.6 µm)
Electropolished** 32 µ-inch
(0.8 µm)
Mechanical Polish/As drawn

*32 µ-inch Max Ra is an approximate value and is not guaranteed. Surface finish roughness shall be physically examined for “P25” using a profilometer calibrated to standards traceable to NIST. Surface finish roughness shall NOT be subject to physical examination for “P7” or “7”.

**The interior surfaces shall be mechanically polished or as drawn to a 25 Ra µ-inch (0.6 µm) maximum finish for sizes ½ – 4 inch diameter. The electropolishing process may increase the Ra values post electropolishing and have areas of preferential etching (e.g. frosting, shadowing, etc.). Final Ra values for electropolished tubing and fitting shall not be used as criteria of acceptance for this product.

Concentric Weld Reducers, 2014 BPEC31-Size-AL6XN-Finish
AL-6XN Material Part #

(7 Finish)

Tube OD

(in)

A

(in)

C31-0.75X0.5-AL6XN-7¾ x ½2.125
C31-1X0.5-AL6XN-71 x ½2.500
C31-1X0.75-AL6XN-71 x ¾2.125
C31-1.5X0.75-AL6XN-71½ x ¾ 3.000
C31-1.5X1-AL6XN-71½ x 12.500
C31-2X1-AL6XN-72 x 13.375
C31-2X1.5-AL6XN-72 x 1½2.500
C31-2.5X1.5-AL6XN-72½ x 1½3.375
C31-2.5X2-AL6XN-72½ x 22.500
C31-3X1.5-AL6XN-73 x 1½4.250
C31-3X2-AL6XN-73 x 23.375
C31-3X2.5-AL6XN-73 x 2½ 2.625
C31-4X2-AL6XN-74 x 25.125
C31-3X2.5-AL6XN-7
4 x 2½4.250
C31-4X3-AL6XN-74 x 3
3.875
Eccentric Weld Reducers, 2014 BPEC32-Size-AL6XN-Finish 

AL-6XN Material Part #

(7 Finish)

Tube OD

(in)

A

(in)

C32-0.75X0.5-AL6XN-7¾ x ½2.125
C32-1X0.5-AL6XN-71 x ½2.500
C32-1X0.75-AL6XN-71 x ¾2.125
C32-1.5X0.75-AL6XN-71½ x ¾ 3.000
C32-1.5X1-AL6XN-71½ x 12.500
C32-2X1-AL6XN-72 x 13.375
C32-2X1.5-AL6XN-72 x 1½2.500
C32-2.5X1.5-AL6XN-72½ x 1½3.375
C32-2.5X2-AL6XN-72½ x 22.500
C32-3X1.5-AL6XN-73 x 1½4.250
C32-3X2-AL6XN-73 x 23.375
C32-3X2.5-AL6XN-73 x 2½ 2.625
C32-4X2-AL6XN-74 x 25.125
C32-4X2.5-AL6XN-7
4 x 2½4.250
C32-4X3-AL6XN-74 x 3
3.875



Concentric Butt Weld Reducers, 2012 BPEB31-Size-Material-Finish
AL-6XN Material Part #

(7 Finish)

Tube OD

(in)

A

(in)

B31-0.75X0.5-AL6XN-7¾ x ½4.00
B31-1X0.5-AL6XN-71 x ½4.50
B31-1X0.75-AL6XN-71 x ¾4.00
B31-1.5X0.5-AL6XN-71½ x ½5.50
B31-1.5X0.75-AL6XN-71½ x ¾5.00
B31-1.5X1-AL6XN-71½ x 15.00
B31-2X1-AL6XN-72 x 17.25
B31-2X1.5-AL6XN-72 x 1½5.25
B31-2.5X1-AL6XN-72½ x 19.25
B31-2.5X1.5-AL6XN-72½ x 1½7.25
B31-2.5X2-AL6XN-72½ x 25.50
B31-3X1-AL6XN-73 x 111.25
B31-3X1.5-AL6XN-73 x 1½9.25
B31-3X2-AL6XN-73 x 27.50
B31-3X2.5-AL6XN-73 x 2½5.50
B31-4X2-AL6XN-74 x 211.75
B31-4X2.5-AL6XN-74 x 2½9.75
B31-4X3-AL6XN-74 x 37.75
Eccentric Butt Weld Reducers, 2012 BPEB32-Size-Material-Finish
AL-6XN Material Part #

(7 Finish)

Tube OD

(in)

A

(in)

B32-0.75X0.5-AL6XN-7¾ x ½4.00
B32-1X0.5-AL6XN-71 x ½4.50
B32-1X0.75-AL6XN-71 x ¾4.00
B32-1.5X0.5-AL6XN-71½ x ½5.50
B32-1.5X0.75-AL6XN-71½ x ¾5.00
B32-1.5X1-AL6XN-71½ x 15.00
B32-2X1-AL6XN-72 x 17.25
B32-2X1.5-AL6XN-72 x 1½5.25
B32-2.5X1-AL6XN-72½ x 19.25
B32-2.5X1.5-AL6XN-72½ x 1½7.25
B32-2.5X2-AL6XN-72½ x 25.50
B32-3X1-AL6XN-73 x 111.25
B32-3X1.5-AL6XN-73 x 1½9.25
B32-3X2-AL6XN-73 x 27.50
B32-3X2.5-AL6XN-73 x 2½5.50
B32-4X2-AL6XN-74 x 211.75
B32-4X2.5-AL6XN-74 x 2½9.75
B32-4X3-AL6XN-74 x 37.75
Concentric Butt Weld Reducers31W-Size-Material-Finish
AL-6XN Material Part #

(7 Finish)

Tube OD

(in)

A

(in)

31W-0.75X0.5-AL6XN-7¾ x ½1
31W-1X0.5-AL6XN-71 x ½2
31W-1X0.75-AL6XN-71 x ¾1
31W-1.5X1-AL6XN-71½ x 12
31W-2X1-AL6XN-72 x 14
31W-2X1.5-AL6XN-72 x 1½2
31W-2.5X1.5-AL6XN-72½ x 1½4
31W-2.5X2-AL6XN-72½ x 22
31W-3X1-AL6XN-73 x 18
31W-3X1.5-AL6XN-73 x 1½6
31W-3X2-AL6XN-73 x 24
31W-3X2.5-AL6XN-73 x 2½2
31W-4X1.5-AL6XN-74 x 1½10
31W-4X2-AL6XN-74 x 28
31W-4X2.5-AL6XN-74 x 2½6
31W-4X3-AL6XN-74 x 34
Eccentric Butt Weld Reducers32W-Size-Material-Finish
AL-6XN Material Part #

(7 Finish)

Tube OD

(in)

A

(in)

32W-0.75X0.5-AL6XN-7¾ x ½1
32W-1X0.75-AL6XN-71 x ¾1
32W-1.5X1-AL6XN-71½ x 12
32W-2X1-AL6XN-72 x 14
32W-2X1.5-AL6XN-72 x 1½2
32W-2.5X1-AL6XN-72½ x 16
32W-2.5X2-AL6XN-72½ x 22
32W-3X1.5-AL6XN-73 x 1½6
32W-3X2-AL6XN-73 x 24
32W-3X2.5-AL6XN-73 x 2½2
32W-4X1.5-AL6XN-74 x 1½10
32W-4X2-AL6XN-74 x 28
32W-4X2.5-AL6XN-74 x 2½6
32W-4X3-AL6XN-74 x 34

Concentric Tri-Clamp Reducers, 2014 BPEC31-14MP-Size-AL6XN-Finish 
AL-6XN Material Part #

(7 Finish)

Tube OD

(in)

A

(in)

C31-14MP-0.75X0.5-AL6XN-7¾ x ½3.125
C31-14MP-1X0.5-AL6XN-71 x ½3.500
C31-14MP-1X0.75-AL6XN-71 x ¾3.125
C31-14MP-1.5X0.75-AL6XN-71½ x ¾ 4.000
C31-14MP-1.5X1-AL6XN-71½ x 13.500
C31-14MP-2X1-AL6XN-72 x 14.375
C31-14MP-2X1.5-AL6XN-72 x 1½ 3.500
C31-14MP-2.5X1.5-AL6XN-72½ x 1½4.375
C31-14MP-2.5X2-AL6XN-72½ x 23.500
C31-14MP-3X1.5-AL6XN-73 x 1½5.250
C31-14MP-3X2-AL6XN-73 x 24.375
C31-14MP-3X2.5-AL6XN-73 x 2½ 3.625
C31-14MP-4X3-AL6XN-74 x 35.000

Eccentric Tri-Clamp Reducers, 2014 BPE C32-14MP-Size-AL6XN-Finish 
AL-6XN Material Part #

(7 Finish)

Tube OD

(in)

A

(in)

C32-14MP-0.75X0.5-AL6XN-7¾ x ½3.125
C32-14MP-1X0.5-AL6XN-71 x ½3.500
C32-14MP-1X0.75-AL6XN-71 x ¾3.125
C32-14MP-1.5X0.75-AL6XN-71½ x ¾4.000
C32-14MP-1.5X1-AL6XN-71½ x 1 3.500
C32-14MP-2X1-AL6XN-72 x 1
4.375
C32-14MP-2X1.5-AL6XN-72 x 1½3.500
C32-14MP-2.5X1.5-AL6XN-72½ x 1½4.375
C32-14MP-2.5X2-AL6XN-72½ x 23.500
C32-14MP-3X1.5-AL6XN-73 x 1½ 5.250
C32-14MP-3X2-AL6XN-73 x 24.375
C32-14MP-3X2.5-AL6XN-73 x 2½3.625
C32-14MP-4X3-AL6XN-74 x 35.000

Concentric Tri-Clamp Reducers, 2012 BPEB31-14MP-Size-Material-Finish
AL-6XN Material Part #

(7 Finish)

Tube OD

(in)

A

(in)

B31-14MP-0.75X0.5-AL6XN-7¾ x ½2.000
B31-14MP-1X0.5-AL6XN-71 x ½2.500
B31-14MP-1X0.75-AL6XN-71 x ¾2.000
B31-14MP-1.5X0.5-AL6XN-71 ½ x ½3.500
B31-14MP-1.5X0.75-AL6XN-71 ½ x ¾3.000
B31-14MP-1.5X1-AL6XN-71 ½ x 13.000
B31-14MP-2X1-AL6XN-72 x 15.000
B31-14MP-2X1.5-AL6XN-72 x 1 ½3.000
B31-14MP-2.5X1-AL6XN-72 ½ x 17.000
B31-14MP-2.5X2-AL6XN-72 ½ x 23.000
B31-14MP-3X1.5-AL6XN-73 x 1 ½7.000
B31-14MP-3X2-AL6XN-73 x 25.000
B31-14MP-3X2.5-AL6XN-73 x 2 ½3.000
B31-14MP-4X3-AL6XN-74 x 35.125
Eccentric Tri-Clamp Reducers, 2012 BPEB32-14MP-Size-Material-Finish
AL-6XN Material Part #

(7 Finish)

Tube OD

(in)

A

(in)

B32-14MP-0.75X0.5-AL6XN-7¾ x ½2.000
B32-14MP-1X0.5-AL6XN-71 x ½2.500
B32-14MP-1X0.75-AL6XN-71 x ¾2.000
B32-14MP-1.5X0.5-AL6XN-71½ x ½3.500
B32-14MP-1.5X0.75-AL6XN-71½ x ¾3.000
B32-14MP-1.5X1-AL6XN-71½ x 13.000
B32-14MP-2X1-AL6XN-72 x 15.000
B32-14MP-2X1.5-AL6XN-72 x 1½3.000
B32-14MP-2.5X1-AL6XN-72½ x 17.000
B32-14MP-3X2-AL6XN-73 x 25.000
B32-14MP-3X2.5-AL6XN-73 x 2½3.000
B32-14MP-4X2-AL6XN-74 x 29.125
B32-14MP-4X3-AL6XN-74 x 35.125
Concentric Tri-Clamp x Butt Weld Reducers, 2014 BPEC31M--Size-AL6XN-Finish 
AL-6XN Material Part #

(7 Finish)

Tube OD

(in)

A

(in)

C31M-0.75X0.5-AL6XN-7¾ x ½2.625
C31M-1X0.5-AL6XN-71 x ½3.000
C31M-1X0.75-AL6XN-71 x ¾2.625
C31M-1.5X0.75-AL6XN-71½ x ¾3.500
C31M-1.5X1-AL6XN-71½ x 1 3.000
C31M-2X1-AL6XN-72 x 1
3.875
C31M-2X1.5-AL6XN-72 x 1½3.000
C31M-2.5X1.5-AL6XN-72½ x 1½3.875
C31M-2.5X2-AL6XN-2½ x 23.000
C31M-3X1.5-AL6XN-73 x 1½ 4.750
C31M-3X2-AL6XN-73 x 23.875
C31M-3X2.5-AL6XN-73 x 2½3.125
C31M-4X3-AL6XN-74 x 34.500

Eccentric Tri-Clamp x Butt Weld Reducers, 2014 BPE 
C32M-Size-AL6XN-Finish 
AL-6XN Material Part #

(7 Finish)

Tube OD

(in)

A

(in)

C32M-0.75X0.5-AL6XN-7¾ x ½2.625
C32M-1X0.5-AL6XN-71 x ½3.000
C32M-1X0.75-AL6XN-71 x ¾2.625
C32M-1.5X0.75-AL6XN-71½ x ¾3.500
C32M-1.5X1-AL6XN-71½ x 1 3.000
C32M-2X1-AL6XN-72 x 1
3.875
C32M-2X1.5-AL6XN-72 x 1½3.000
C32M-2.5X1.5-AL6XN-72½ x 1½3.875
C32M-2.5X2-AL6XN-2½ x 23.000
C32M-3X1.5-AL6XN-73 x 1½ 4.750
C32M-3X2-AL6XN-73 x 23.875
C32M-3X2.5-AL6XN-73 x 2½3.125
C32M-4X3-AL6XN-74 x 34.500

Concentric Tri-Clamp x Butt Weld Reducers, 2012 BPEB31M-Size-Material-Finish
AL-6XN Material Part #

(7 Finish)

Tube OD

(in)

A

(in)

B31M-0.75X0.5-AL6XN-7¾ x ½3.000
B31M-1X0.5-AL6XN-71 x ½3.500
B31M-1X0.75-AL6XN-71 x ¾3.000
B31M-1.5X0.75-AL6XN-71½ x ¾4.000
B31M-1.5X1-AL6XN-71½ x 14.000
B31M-2X1-AL6XN-72 x 16.000
B31M-2X1.5-AL6XN-72 x 1½4.000
B31M-2.5X1.5-AL6XN-72½ x 1½6.000
B31M-2.5X2-AL6XN-72½ x 24.250
B31M-3X2-AL6XN-73 x 26.250
B31M-3X2.5-AL6XN-73 x 2½4.250
B31M-4X2.5-AL6XN-74 x 2½8.375
B31M-4X3-AL6XN-74 x 36.375
Eccentric Tri-Clamp x Butt Weld Reducers, 2012 BPEB32M-Size-Material-Finish
AL-6XN Material Part #

(7 Finish)

Tube OD

(in)

A

(in)

B32M-0.75X0.5-AL6XN-7¾ x ½3.000
B32M-1X0.5-AL6XN-71 x ½3.500
B32M-1X0.75-AL6XN-71 x ¾3.000
B32M-1.5X0.75-AL6XN-71½ x ¾4.000
B32M-1.5X1-AL6XN-71½ x 14.000
B32M-2X1-AL6XN-72 x 16.000
B32M-2X1.5-AL6XN-72 x 1½4.000
B32M-2.5X1.5-AL6XN-72½ x 1½6.000
B32M-2.5X2-AL6XN-72½ x 24.250
B32M-3X2-AL6XN-73 x 26.250
B32M-3X2.5-AL6XN-73 x 2½4.250
B32M-4X2.5-AL6XN-74 x 2½8.375
B32M-4X3-AL6XN-74 x 36.375
More Reducers

For 304 and 316L reducers that meet 3-A sanitary or BPE standards, visit the Reducers for Food, Dairy, & Beverage and BPE Reducers pages. Need a more corrosion-resistant reducer? Check out the Hastelloy C-22 Reducers page for additional material options.

Still don't see what you need? Call CSI for configurations not listed or for custom fabrications.

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