The internal preventer is an important preventer during drilling process. This tool, compared with back-pressure valve of other structure style, has advantages like high strength, high pressure resistance, safe and reliable etc.
1. Model: FJ165/35-NC50; 2. Outer diameter: 165mm; 3. Inner diameter: 35mm; 4. Overall length: 665mm; 5. Pressure rating: 70Mpa;
for after-sale service