Penn Machine manufactures forged Round, Square, Hexagon Plugs , Hexagon Bushings, and Flush Bushings in all material grades covered per ASME B16.11 which may be used for ratings up through Class 6000 as stated in ASME B16.11. Both Plugs and Bushings per ASME B16.11 are not required to have a marking on them.

All Penn Machine products are heat code traceable and MTRs may be provided on each heat code lot product. SA/A105 Round, Square, Hexagon Plugs and Hexagon Bushings from 1/8 through 2 NPS Penn Machine are carton quantity packaged and package labeled. All Round Head Plugs, Square Head Plug, Hexagon Plug, and Hexagon Bushings for 2-1/2 NPS or larger will also have a minimum of Grade, Penn or “p”, and Heat Lot Code for SA/A105 material.

All Stainless Steel and Alloy products of any type Plug or Bushing will be marked with a minimum of Grade, Penn or “P”, and Heat Lot Code where size of product permits. For products physically or legibly impossible to mark, products will be supplied in a labeled package indicating all traceable information on the package label.

Flush Bushings are marked where physically or legibly possible depending on size reduction of the specified product. All products may have a Penn Machine Manufacturers Test Report retrieved from www.pennusa.com and may be marked per customer request, please consult with your Penn Machine representative at 1-800-PENN-USA.