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