China Ram-type Blowout Preventers - Reliable Well Control Equipment from Trusted Suppliers and Factory
Design and Construction
All Ram BOPs were constructed from high-strength alloy steel, with all pressure-containing components subjected to refined forging and strict heat treatment for maximum durability and resistance to cracking or inclusions.
Extended ram chamber runway design minimizes stress concentration, ensuring long service life under demanding operating conditions.
Hydraulic systems operate both bonnet and ram movements through a streamlined single-line system, enabling efficient and reliable operation.
Key Features
Pressure-energized rams with hydraulically actuated bonnets for rapid and secure ram replacement
Manual locking screws included as standard
Optional hydraulic locking devices for safe remote operation
H2S-resistant internal components for sour service environments
Variable Bore Rams (VBRs) compatible and interchangeable with leading OEM designs
Large Bore Shear Bonnets engineered for heavy-duty operations, OEM interchangeable
Ram boosters available and OEM interchangeable
Seal kits fully interchangeable with OEM standards for simplified maintenance and local sourcing
Advantages
Field-proven reliability
Designed with safety and durability as the top priority, ensuring dependable well control in the harshest environments.
Operational efficiency
Hydraulically opening bonnets allow for quick and easy ram change-outs, reducing non-productive time.
OEM interchangeability
All critical components and consumables match OEM specifications, lowering maintenance costs and improving spare parts availability.
Ram BOP Specification
| Model | Main Bore | Working pressure | Oil quantity for opening L | Oil quantity for closing L |
|---|---|---|---|---|
| mm(in) | MPa(psi) | (Single Cylinder) | (Single Cylinder) | |
| (2)FZ18-21 | 179.4(7-1/16) | 21(3000) | 1.6 | 2 |
| (2)FZ18-35 | 179.4(7-1/16) | 35(5000) | 1.6 | 2 |
| (2)FZ18-70 | 179.4(7-1/16) | 70(10000) | 2.2 | 2.5 |
| (2)FZ18-105 | 179.4(7-1/16) | 105(15000) | 7.4 | 8 |
| (2)FZ23-21 | 228.6(9) | 21(3000) | 1.3 | 1.5 |
| (2)FZ23-35 | 228.6(9) | 35(5000) | 4.7 | 5.3 |
| (2)FZ23-70 | 228.6(9) | 70(10000) | 7 | 8 |
| (2)FZ23-105 | 228.6(9) | 105(15000) | 10.2 | 10.9 |
| (2)FZ28-21 | 279.4(11) | 21(3000) | 2.7 | 3.2 |
| (2)FZ28-35 | 279.4(11) | 35(5000) | 5.4 | 6.2 |
| (2)FZ28-70 | 279.4(11) | 70(10000) | 7 | 8 |
| (2)FZ28-105 | 279.4(11) | 105(15000) | 14.6 | 16.7 |
| (2)FZ35-21 | 346.1(13-5/8) | 21(3000) | 7.8 | 8.9 |
| (2)FZ35-35 | 346.1(13-5/8) | 35(5000) | 7.9 | 9.3 |
| (2)FZ35-70 | 346.1(13-5/8) | 70(10000) | 18 | 20.7 |
| (2)FZ35-105 | 346.1(13-5/8) | 105(15000) | 17.4 | 20 |
| (2)FZ43-35 | 425.5(16-3/4) | 35(5000) | 10.3 | 11.6 |
| (2)FZ48-35 | 476.3(18-3/4) | 35(5000) | 24.5 | 27.9 |
| (2)FZ48-70 | 476.3(18-3/4) | 70(10000) | 24.5 | 27.9 |
| (2)FZ53-21 | 527.1(20-3/4) | 21(3000) | 12.2 | 13.6 |
| (2)FZ54-14 | 539.8(21-1/4) | 14(2000) | 12.1 | 13.8 |
| (2)FZ54-35 | 539.8(21-1/4) | 35(5000) | 26 | 29.6 |
| (2)FZ68-21 | 679.5(26-3/4) | 21(3000) | 32.6 | 37 |
Frequently Asked Questions (FAQ)
What materials are used to construct the Ram BOPs?
All Ram BOPs are constructed from high-strength alloy steel. The pressure-containing components undergo refined forging and strict heat treatment to ensure maximum durability and resistance to cracking.
How does the design improve the lifespan of the equipment?
The equipment features an extended ram chamber runway design that minimizes stress concentration, ensuring a long service life even under demanding operating conditions.
Are these BOPs suitable for sour service environments?
Yes, they are equipped with H2S-resistant internal components, making them highly suitable and safe for sour service environments.
Are the components interchangeable with OEM parts?
Absolutely. Critical components such as Variable Bore Rams (VBRs), Large Bore Shear Bonnets, ram boosters, and seal kits are fully interchangeable with leading OEM designs, which lowers maintenance costs.
How do hydraulically actuated bonnets benefit operations?
Hydraulically opening bonnets allow for rapid, secure, and easy ram change-outs. This significantly improves operational efficiency by reducing non-productive time.