1. The rubber core can store huge amount of rubber with smaller friction when opening and closing with stronger well pressure sealing ability.
2. The hemispherical head cover adopted can get rid of stress under pressure to keep the shell under balanced stress. it is also easy to be installed and dismantled.
3. Short stroke of piton and low height with abrasive-resistant ring.
4. Lip-type packing is used for a longer service life.
5.Low-teperature annular BOP shell outer diameter has a groove-shape steam line through which saturated steam will rung through around the shell body for heating purpose (optional for customers)
6. High sulfate-resistant BOP internal parts which are prone to well fluid contact are surfaced with high nickel-based alloy to reach the highest level of anti-H2S and CO2 purpose.
1.Drift diameter (mm): 179-476;
2.Working pressure (Mpa): 21-70;
3.Control pressure (Mpa): 8.4-10.5。
12 months after delivery