Used Drill Pipe Inspection - Comparison Chart
API DS-1 NS-2 Client
(RP7G) (cat 5) Specific
Tube (Including Slip / Upset Areas)
Visual R R
Dimensional (OD Gauge) R R
Ultrasonic Wall Thickness R R
EMI 1 (Traverse Only) - R
EMI 2 (Traverse & Wall Thickness) R* -
Slip / Upset Area Only
MPI (Wet Visible) - R
MPI (Dry Powder or Wet Fluorescent) R -
Ultrasonic Shear Wave (Traverse Only) R R
MU check on 10% of Pipe Inspected - R
Tool Joint & Connection
Visual
Weight / Grade Stencils R -
Seal Surfaces R R R
Re-facing Check R R
Bevel Width R R
Thread Surfaces O R R
Pin Thread Profile O R R
Box Swell O R R
Hardfacing R R
Cracks
Dimensional
Box OD R# R R
Pin ID R R
Box Shoulder Width O R R
Box & Pin Tong Space O R R
Box Swell O R R
Box Counter-bore Depth R R
Box Counter-bore Diameter O R R
Box Seal Width R R
Pin Lead R R
Box & Pin Bevel Diameter R R
Box Seal Width R R
Shoulder Flatness R R
Pin Neck Length R R
MPI (Wet Fluorescent Method) O** R** R
ATI - O
R = Required Inspection
O = Optional inspection
* = May be replaced by FLUTI or EMI 1 plus UT wall if EMI 2 equipment not available
** = May be omitted unless tool joint fatigue cracks have occurred
# = Includes pin tool joint OD
