The robust Heavy Series design is larger and thicker than the Standard Series,
and is designed for the toughest applications. As a general rule of thumb, the
outside diameter of the line to be secured should not vary over or under the
ØD dimension in the chart by more than 1/2 of the tension clearance dimension
(dimension “O”). Heavy Series pipe clamps are available in sizes from 1/4 in.
(6.35 mm) through 8.625 in. (219 mm) outside diameter sizes. If a required
size is not available, custom sizes can be made to order..