Standard Dimensions

AWWA C151 – minimum thickness classes in this standard are Class 350 for 4”–12” sizes, Class 250 for 14”-20” sizes, Class 200 for 24” and Class 150 for 30”–64” sizes.

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AWWA C115 – minimum thicknesses for all sizes of ductile iron pipe for threading on flanges.

Wall pipe is normally fabricated of Special Class 53 thickness ductile iron pipe but may be furnished with minimum classes unless threaded flanges or threaded MJ bells are included or unless specified otherwise.

Transporting, Lifting, Installing Pipe - The Weight Must be Considered

A forklift or loader, which may be moving more than one pipe at a time from a truck or bundle on the ground, would obviously need to consider the number of pipes involved times the listed weight of each pipe in the interest of safe operations for each lift or transport maneuver.

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See these helpful Iron Strong Blogs for more on DI pipe transport, receiving, off-loading, and job site storage tips:

 It is important to note that when down-classing occurs, and whether providing actual weights or nominal weights of pipe on the production stickers, it remains the manufacturer's proprietary right to display their choice of a final weight displayed, be it the originally intended class or the lower class assigned.

It is recommended you check with the pipe manufacturer to confirm what selection they utilize in their process. Nonetheless, using a nominal (mid-range) weight for any class is a far better and more reliable estimate of pipe weight than in days past when most manufacturers listed the minimum weight of the size and class.

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