Therefore, the wall thickness can vary 12-1/2 percent over and under that specified. ![]() A Tolerances of tubes produced by the rod or bar mandrel process and which have an inside diameter under 1/2 inch (or an inside diameter under 5/8 inch when the wall thickness is more than 20 percent of the outside diameter) are as shown in this table, except that wall thickness tolerances are 10 percent over and under the specified wall thickness.ī For ovality values, the tolerance for average outside diameter at any one cross section does not exceed the outside diameter tolerance value for the applicable outside diameter.Ĭ Many tubes with wall thicknesses more than 25 percent of outside diameter or with wall thicknesses over 1-1/4 inch or weighing more than 90 lbs per foot are difficult to draw over a mandrel.
0 Comments
Leave a Reply. |