Many applications for Charter Dura-Bar end up having a hole machined through the center. Often this is one of the longer machining steps. To help speed up the machining process, we offer trepanned tubes from a variety of round bar stock sizes to meet a wide range of customer tubing applications. 

The Charter Dura-Bar trepanning process and modern equipment assures customers of the most precise and accurate trepanned products to meet exact specifications. All tubes are left with sufficient stock for clean-up in most applications. 

Many trepanned sizes are available from stock, and additional sizes can be custom ordered.