Home / TSDS Field Inspection TSDS ™ FIELD INSPECTION – COMPLETE GUIDE The TSC Drill Pipe engineering team developed the TSDS™ inspection procedures and drawings to provide a clear, uniform standard for assessing connection integrity, supporting safe operation, and dependable performance in the field. TSDS™ Pin and Box Field Inspection Drawings PTECH+™ 43 PTECH+™ 47 PTECH+™ 55