Steel Pipe Dimensions Capacities and Weights

Nominal pipe size, in Outside diam., in Schedule no. Wall thickness, in Inside diam., in Cross- sectional area metal, in Inside sectional area, ft Circumference, ft, or surface, ft /ft, of length Capacity at 1 ft/s velocity Weight of pipe, Ib/ft 

Nominal pipe size, in Outside diam., in Schedule no. Wall thickness, in Inside diam., in Cross- sectional area metal, in  

The schedule number corresponds roughly to lo allowable pressure per allowable stress. Thus, for a material with an allowable stress of 10,000 Ib/in a schedule 40 pipe would have an allowable pressure of 4001b/in. [From Chemical Engineers Handbook, by Perry, Chilton, and Kirkpatrick. Copyright 1963, McGraw-Hill, Inc. Used by permission of the publisher.] 

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