January 20, 2019
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Service Spec Sheets
inspection method is applied to drill pipe tool joints and involves the measurement or Go-No-Go gaging of box OD, pin ID, shoulder width, tong space, and box counterbore. Its evaluation includes torsional capacity of pin and box, torsional matching of tool joint and tube, adequate shoulder support makeup stresses, and adequate gripping space for tongs.
inspection method is applied to drill pipe tool joints and involves the Dimensional 1 requirements plus the measurement or Go-No-Go gaging of pin lead, counterbore depth, pin flat length, bevel diameter, seal width, and shoulder flatness. Its evaluation includes the same as Dimensional 1, plus evidence of torsional damage, potential box thread engagement with pin flat, excessive shoulder width, sufficient seal area to avoid galling, and non-flat shoulders.
Measuring devices, as required by tool joint connection type, include:
Micrometer (HT & XT)
Digital O.D. Calipers
18” Machinist Ruler
Copyright 2007 by Superior Inspection Services