Hammer Union Circulating Sub | Hard rock drilling requiring percussive force | Material: High Manganese Steel (ASTM A128 Grade 3) ▲▲ (Industry: Carbon Steel; Base: Grade 2; Advanced: Grade 3) (▲▲ = 2x harder than industry) | Enhanced wear resistance for prolonged use in abrasive conditions | Higher cost due to premium material composition |
Thread Design Circulating Sub | Deep drilling with high-pressure connections | Thread Profile: API Spec 7-1a Compliant Threads ▲ (Industry: Custom Threads; Base: API 7-1a; Advanced: Tapered Threads) (▲ = 30% tighter seal) | Leak-proof connections under extreme pressure | Requires specialized threading tools for installation |
Centralizer Circulating Sub | Borehole drilling to reduce friction | Eccentricity Control: ≤0.5mm (ISO 10419) ▲ (Industry: ≤1.0mm; Base: 0.8mm; Advanced: 0.5mm) (▲ = 50% better alignment) | Minimizes drill bit wear and borehole wall damage | Installation requires precise alignment tools |
Durability-Enhanced Sub | Abrasive environments (e.g., sandstone) | Abrasion Resistance: ISO 13544 Class 4 (≥450 abrasion index) ▲▲ (Industry: Class 2 (300); Base: Class 3 (400); Advanced: Class 4) (▲▲ = 50% tougher) | Extended lifespan in harsh, abrasive drilling conditions | Increased weight and bulk compared to standard models |
Spin-Type Circulating Sub | Precision drilling in soft rock formations | Rotational Precision: ±0.02mm Runout (ISO 1007) ▲ (Industry: ±0.05mm; Base: ±0.03mm; Advanced: ±0.02mm) (▲ = 60% smoother rotation) | Reduces vibration for accurate drilling trajectories | Limited effectiveness in highly abrasive or hard rock environments |
Warranty-Backed Circulating Sub | Critical operations needing reliability | Warranty Duration: 1.5 Years ▲ (Industry: 1 Year; Base: 1.5 Years; Advanced: 2 Years) (▲ = 50% longer coverage) | Extended defect-free assurance period | Higher upfront cost compared to non-warranty alternatives |