CPTDC Annular BOP FH28-35，FH28-35/70，FH35-35，FH35-35/70
(1)Strict control of the content of harmful ingredients such as S, P, H, O, N. Non-Destructive Testing for the parts to ensure that their internal qualitycomply with standard.
(2)The mechanical properties of metal are in accordance with API 16A standard, HRC≤22, the chemical composition in accordance with API Spec 16A(GB/T20174-2006), All metals in contact with wellbore fluids per NACE Spec MR-0175-2003 for H2S.
(3)The temperature level of the metal material is T-20, the temperature level of the non-metal material is BB.l The top sealing surface of Ram BOP is treated with preservatives. Stainless steel welding and the corrosion-resistant alloy plating are adopted.
(4)The Surface of ram shaft is chrome plated.
(5)The connection of Ram BOP with oil tube is NPT 1'' box end, C/Woil tubing support withNPT 1'' box end. The connection of Annular BOP with oil tube is Rc1-1/2’’ box end, C/W oil tubing support with R1-1/2’’×NPT 1'' box end.
(6)The flange bolts and nuts are in accordance with GB/T 22513-2008, closed type bolt complies with GB/T 20174-2006, all connection threads are metric thread.
| Type | Annular | Annular |
| Model | FH28-35 | FH28-35/70 |
| Top Connection | Studded | Studded |
| Bottom Connection | Flange | Flange |
| Weight , Kg | 4616 | 4716 |
| Height, mm | 1104 | 1110 |
| Bore dia. | 279.4 mm (11″) | 279.4 mm (11″) |
| Rated Working pres. | 35 MPa (5,000psi) | 35 MPa (5,000psi)/75Mpa(10,000psi) |
| Hydraulic control rated working pres. | 14 MPa（2,000psi） | 14 MPa（2,000psi） |
| Recommended hydraulic control operating pres. | 8.4～10 .5MPpa(1,200～1,500psi) | 8.4～10 .5Mpa(1,200～1,500psi) |
| Hose connection joint | R1-1/2 “×NPT 1” | R1-1/2 “×NPT 1” |
| Open Volume for one set of Ram | 56L | 56L |
| Close Volume for one set of Ram | 72L | 72L |
| Temperature Grade | T20(-29～121℃) | T20(-29～121℃) |
| | |
| Type | Annular | Annular |
| Model | FH35-35 | FH35-35/70 |
| Top Connection | Studded | Studded |
| Bottom Connection | Flange | Flange |
| Weight , Kg | 6415 | 6745 |
| Height, mm | 1176 | 1240 |
| Bore dia. | 346.1 mm (13 5/8″) | 346.1 mm (13 5/8″) |
| Rated Working pres. | 35 MPa (5,000psi) | 35 MPa (5,000psi) |
| Hydraulic control rated working pres. | 14 MPa（2,000psi） | 14 MPa（2,000psi） |
| Recommended hydraulic control operating pres. | 8.4～10 .5MPa(1,200～1,500psi) | 8.4～10 .5MPa(1,200～1,500psi) |
| Hose connection joint | R1-1/2 “×NPT 1” | R1-1/2 “×NPT 1” |
| Open Volume for one set of Ram | 69L | 69L |
| Close Volume for one set of Ram | 72L | 72L |
| Temperature Grade | T20(-29～121℃) | T20(-29～121℃) |
