NS-1 Specification (Level 5) Designed for heavy 
drilling geoclimaticconditions, 
provides:
- stringent requirements for pipe geometry
 - increased fatigue strength of metal
 - mud flow optimization
 - minimization of critical failures
 - additional requirements for hard banding
 



Multi-level quality management system
API Spec Q1 and ISO 9001-2015
- Global quality control standards
 - 100% traceability from steel melting to finished products
 - Exclusive manufacturer responsibility
 
Warranty and post warranty repair
- Extended Quality Assurance
 - Professional repair and restoration of pipes with a factory warranty
 - Simplified claim handling
 
30 years of supply
- More than 500 000 Drill Collars
 - More than 120 000 HWDP
 - More than 20 000 Kellies
 - More than 400 000 t of Steel
 

