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Carbon Steel Buttweld

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  • Carbon Steel Buttweld Reducers conform to ASTM A234.
  • Stocked in sizes from (1.50" X 1.00") to (12" X 10").
  • Concentric and Eccentric Carbon Steel Buttweld Reducers are available from stock.
  • Both schedule standard (STD) and extra heavy (XH) are stocked.

Four different Carbon Steel Buttweld Reducers.
Sizes are Nominal Pipe Size (NPS) - size chart
Three different sizes of Carbon Steel Buttweld Reducers.

To start, select size. Follow the green box to refine selections as desired. Click “Lookup Product” any time after selecting size to display products matching criteria entered so far. Fields autofill when only one choice. Or use search box above.


Schedule refers to the pipe thickness on which this fitting is to be used, typically values are STD (standard), S/10 (Schedule 10) and XH (extra heavy). These thickness vary with the diameter of the pipe according to published standards.


Domestic = Made in the USA

Import = Made anywhere else


Concentric reducers = aligned bore centerline for larger and smaller pipe diameters.

Eccentric reducers = offset bore centerline for larger and smaller pipe diameters.

Insert - the larger half of the reducer fits into the larger pipe.

Coupling - both sideds of the reducer fit on the outside of the connecting pipes.