5.5 Inch 24.70 VX54 6625 4000 2 (Landing String) | PDF | Pipe (Fluid Conveyance) | Manufactured Goods
Drill Pipe API Specifications, Thread Types &Tables - Drilling Manual
Drill string - Wikipedia
DIN EN ISO 11961:2007 - Petroleum and natural gas industries - Steel pipes for use as drill pipe - Specification (ISO/DIS 11961:2006); English version prEN ISO 11961:2006 (FOREIGN STANDARD)