This inspection detects all defects extending to the surface and representing external damage or actual parting of material:
A transversely oriented magnetic field is induced into the tube and iron powder applied to its outside surface. The powder is attracted to areas of variation in the magnetic field created by Longitudinal or three dimensional defects, thus outlying the defects. Depth of the defect is then determined by grinding to the point of maximum penetration and measuring with an accurate depth gauge.
Same inspection procedure as specified under service code T-401.
A magnetic field is induced into the material and the liquid suspension method applied to locate injurious service included defects.
On threads only.
Utilizing a centered grinding tool nicks, gouges, pits and other imperfections are removed from the seals of connections of the above material. The amount of the material removed is carefully controlled by the use of vernier gauges to meet with specifications
Inspection After Machine Shop Repair
Dimensional Inspection and Magnetic Particle Inspection performed to API specifications of dimensions