As shown above, from the Vulcan Data Manual; more information is available in the vulcanhammer.info Guide to Pile Driving Equipment. Many engineers are looking for properties of these sheets (such as moment of inertia and section modulus) that Vulcan didn’t have much interest in. In the 1970’s, the sheet pile manufacturers changed their designations; a conversion chart for some of those designations can be found in Vulcan Onshore Tip #51: Sheet Pile Designations.
There are some alternate forms of these shown in the post Making an Impact on Sheet Piling.

