Weighted balanced drill pipes

Warranty period 1 year.

Shelf life (service life) 4 years.

Reliability: the average MTBF for UBTS is 400 screwing - unscrewing. Average service life before the first re-cutting of the UBTS is not less than 3000 hours, taking into account re-cutting not less than 18000 hours.

Mechanical properties: UBTS with outer diameter up to 175 mm Tensile strength not less than 965 MPa Yield strength not less than 758 MPa; Relative elongation not less than 13 % Impact toughness KCU not less than 600 J/sq. m Impact work KV value not less than 54 J

UBTS with outer diameter over 175 mm Tensile strength not less than 931 MPa Yield strength not less than 689 MPa; Relative elongation not less than 13 % Impact toughness KCU not less than 600 J/sq. m Impact work KV value not less than 54 J