AL-6XN® Alloy Reducers

Central States Industrial (CSI) stocks concentric and eccentric reducers in corrosion-resistant super alloy 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
BPE Surface Finish CodeCSI Surface Finish CodeProduct Contact Surface

(Max Ra)*

Product Contact Surface Finish Treatment

(ID)

Non-Product Contact Surface

(Max Ra)

Non-Product Contact
Surface Finish Treatment

(OD)

Dimensions & Tolerances
(BPE) or (CSI)
N/APUN/AUnpolished/MillN/AUnpolished/MillCSI
N/A732 µ-inch
(0.81 µm)
Mechanical Polish/As Drawn32 µ-inch
(0.81 µm)
Mechanical PolishCSI
SF1PL20 µ-inch
(0.51 µm)
Mechanical Polish/As Drawn32 µ-inch
(0.81 µm)
Mechanical PolishBPE
SF5PO20 µ-inch
(0.51 µm)
Electropolished32 µ-inch
(0.81 µm)
Mechanical PolishBPE
SF6P2525 µ-inch
(0.64 µm)
Electropolished32 µ-inch
(0.81 µm)
Mechanical PolishBPE

AL-6XN Surface Finish Designations

B31SMS
2019 BPE DT-4.1.3-2
B32MS
2019 BPE DT-4.1.3-2
Concentric Butt Weld Reducers31W-Size-Material-Finish
AL-6XN Material Part #

(7 Finish)

Size OD

(in)

A

(in)

31W-0.75X0.5-AL6XN-7¾ x ½1.000
31W-1X0.5-AL6XN-71 x ½1.500
31W-1X0.75-AL6XN-71 x ¾1.000
31W-1.5X0.5-AL6XN-71½ x ½2.500
31W-1.5X0.75-AL6XN-71½ x ¾2.000
31W-1.5X1-AL6XN-71½ x 12.007
31W-2X0.75-AL6XN-72 x ¾5.000
31W-2X1-AL6XN-72 x 14.000
31W-2X1.5-AL6XN-72 x 1½2.000
31W-2.5X1-AL6XN-72½ x 16.000
31W-2.5X1.5-AL6XN-72½ x 1½4.000
31W-2.5X2-AL6XN-72½ x 22.000
31W-3X1-AL6XN-73 x 18.000
31W-3X1.5-AL6XN-73 x 1½6.000
31W-3X2-AL6XN-73 x 24.014
31W-3X2.5-AL6XN-73 x 2½2.007
31W-4X1.5-AL6XN-74 x 1½10.000
31W-4X2-AL6XN-74 x 28.000
31W-4X2.5-AL6XN-74 x 2½6.000
31W-4X3-AL6XN-74 x 34.000
31W
Eccentric Butt Weld Reducers32W-Size-Material-Finish
AL-6XN Material Part #

(7 Finish)

Size OD

(in)

A

(in)

32W-0.75X0.5-AL6XN-7¾ x ½1.000
32W-1X0.5-AL6XN-71 x ½1.500
32W-1X0.75-AL6XN-71 x ¾1.000
32W-1.5X0.5-AL6XN-71½ x ½2.500
32W-1.5X0.75-AL6XN-71½ x ¾2.000
32W-1.5X1-AL6XN-71½ x 12.007
32W-2X0.75-AL6XN-72 x ¾5.000
32W-2X1-AL6XN-72 x 14.000
32W-2X1.5-AL6XN-72 x 1½2.000
32W-2.5X1-AL6XN-72½ x 16.000
32W-2.5X1.5-AL6XN-72½ x 1½4.000
32W-2.5X2-AL6XN-72½ x 22.000
32W-3X1-AL6XN-73 x 18.000
32W-3X1.5-AL6XN-73 x 1½6.000
32W-3X2-AL6XN-73 x 24.014
32W-3X2.5-AL6XN-73 x 2½2.007
32W-4X1.5-AL6XN-74 x 1½10.000
32W-4X2-AL6XN-74 x 28.000
32W-4X2.5-AL6XN-74 x 2½6.000
32W-4X3-AL6XN-74 x 34.000
32W
Concentric Butt Weld Reducers, 2009 BPEB31-Size-Material-Finish
AL-6XN Material Part #

(7 Finish)

Size OD

(in)

A

(in)

B31-0.75X0.5-AL6XN-7¾ x ½4.000
B31-1X0.5-AL6XN-71 x ½4.500
B31-1X0.75-AL6XN-71 x ¾4.000
B31-1.5X0.5-AL6XN-71½ x ½5.500
B31-1.5X0.75-AL6XN-71½ x ¾5.000
B31-1.5X1-AL6XN-71½ x 15.000
B31-2X1-AL6XN-72 x 17.250
B31-2X1.5-AL6XN-72 x 1½5.250
B31-2.5X1-AL6XN-72½ x 19.250
B31-2.5X1.5-AL6XN-72½ x 1½7.250
B31-2.5X2-AL6XN-72½ x 25.500
B31-3X1-AL6XN-73 x 111.250
B31-3X1.5-AL6XN-73 x 1½9.250
B31-3X2-AL6XN-73 x 27.500
B31-3X2.5-AL6XN-73 x 2½5.500
B31-4X2-AL6XN-74 x 211.750
B31-4X2.5-AL6XN-74 x 2½9.750
B31-4X3-AL6XN-74 x 37.750
B31
Eccentric Butt Weld Reducers, 2009 BPEB32-Size-Material-Finish
AL-6XN Material Part #

(7 Finish)

Size OD

(in)

A

(in)

B32-0.75X0.5-AL6XN-7¾ x ½4.000
B32-1X0.5-AL6XN-71 x ½4.500
B32-1X0.75-AL6XN-71 x ¾4.000
B32-1.5X0.5-AL6XN-71½ x ½5.500
B32-1.5X0.75-AL6XN-71½ x ¾5.000
B32-1.5X1-AL6XN-71½ x 15.000
B32-2X1-AL6XN-72 x 17.250
B32-2X1.5-AL6XN-72 x 1½5.250
B32-2.5X1-AL6XN-72½ x 19.250
B32-2.5X1.5-AL6XN-72½ x 1½7.250
B32-2.5X2-AL6XN-72½ x 25.500
B32-3X1-AL6XN-73 x 111.250
B32-3X1.5-AL6XN-73 x 1½9.250
B32-3X2-AL6XN-73 x 27.500
B32-3X2.5-AL6XN-73 x 2½5.500
B32-4X2-AL6XN-74 x 211.750
B32-4X2.5-AL6XN-74 x 2½9.750
B32-4X3-AL6XN-74 x 37.750
B32
Concentric Tri-Clamp x Butt Weld Reducers, 2009 BPEB31M-Size-Material-Finish
AL-6XN Material Part #

(7 Finish)

Size 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
B31M
Eccentric Tri-Clamp x Butt Weld Reducers, 2009 BPEB32M-Size-Material-Finish
AL-6XN Material Part #

(7 Finish)

Size 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
B32M
Concentric Tri-Clamp Reducers, 2009 BPEB31-14MP-Size-Material-Finish
AL-6XN Material Part #

(7 Finish)

Size 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
B31-14MP
Eccentric Tri-Clamp Reducers, 2009 BPEB32-14MP-Size-Material-Finish
AL-6XN Material Part #

(7 Finish)

Size 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
B32-14MP
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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