Drill Pipe & Tools
Heavy-Weight Drill Pipe (HWDP)
Bottom Hole Assembly (BHA)
API 7-1
Heavy-Weight Drill Pipe (HWDP) is supplied to API 7-1. Available in AISI 4145H/4137. Size range: OD 3⅛″–9½″. Typical application: intermediate link, fatigue reduction. Made to order with full mill certification (EN 10204 3.1) for oil & gas projects across Iran and the Gulf.
| Standard | API 7-1 |
| Grades / classes | AISI 4145H/4137 |
| Sizes / range | OD 3⅛″–9½″ |
| Sub-category | Bottom Hole Assembly (BHA) |
| Category | Drill Pipe & Tools |
| Application | intermediate link, fatigue reduction |
Related standards
Drill Pipe & Tools