| After-sales Service: | Online Support |
|---|---|
| Warranty: | 1year |
| Manufacturing Process: | Casting |
| Surface Treatment: | Spray-Paint |
| Operation Pressure: | 2000-15000psi |
| Material: | Alloy |
| Customization: |
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Audited Supplier API Annular BOP for well control
In case of blowout and well-sealing is needed, high pressure oil coming from control system enters the bottom closing chamber from bottom inlet to push piston moving upward. The movement of piston forces rubber core to move upward along the sphere surface, then supporting ribs get closer to push the internal rubber moving towards the wellhead center to fulfill the function of sealing drill equipment or the wellhead. When unlocking the seal is needed, hydraulic oil pushes the piston moving downward and the rubber core will reset to its original position under its elastic force.
Structure Characteristics:
1. The connection between top cap and housing, top and bottom ends adopt flanges and bolts.
2. Semisphere rubber core has many advantages, such as not easy folding back, big volume of rubber storage. Under the well pressure,the piston pushes the rubber core upward to form a funnel shape. The funnel effect of rubber core increases its sealing performance and life span.
3. Characteristics of the sealing structure
1)The BOP has three important sealing positions: piston external surface seal, piston internal surface seal and mud blocking ring seal.
2)Radial direction cross section of the piston comes of the shape "Z", which makes the piston have short stroke length, low height and big diameter.
| SIZE (MM) | SIZE (IN) | SIZE (MM) | SIZE (IN) |
| FH18-21 | 7-1/16" x 3,000 | FHZ18-70 | 7-1/16'' x 10,000 |
| FH18-35 | 7-1/16" x 5,000 | FHZ18-70/105 | 7-1/16'' x 10,000 / 15,000 |
| FH18-35/70 | 7-1/16" x 5,000 / 10,000 | FHZ28-35 | 11" x 5,000 |
| FH23-21 | 9" x 3,000 | FHZ28-70 | 11" x 10,000 |
| FH28-35 | 11" x 5,000 | FHZ28-70/105 | 11" x 10,000 / 15,000 |
| FH28-35/70 | 11" x 5,000 / 10,000 | FHZ28-105 | 11'' x 15,000 |
| FH28-70 | 11" x 10,000 | FHZ28-105/140 | 11'' x 15,000 / 20,000 |
| FH28-70/105 | 11" x 10,000 / 15,000 | FHZ35-21 | 13-5/8" x 3,000 |
| FH35-21 | 13-5/8" x 3,000 | FHZ53-21 | 20-3/4'' x 3,000 |
| FH35-35 | 13-5/8" x 5,000 | FHZ54-14 | 21-1/4" x 2,000 |
| FH35-35/70 | 13-5/8" x 5,000 / 10,000 | FHZ75-3.5 | 29-1/2'' x 500 |
| FH35-70 | 13-5/8" x 10,000 | ||
| FH35-70/105 | 13-5/8" x 10,000 / 15,000 |
How to order?
Please send us your inquiry with detail item description or with Model number.
If there is no packing demand we take it as our regular exported standard packing.
We will offer you an order form for filling. We will recommend you the most suitable model according to information you offered.
You send us your detail requirement, we provide quotation to you.
Can I expect a quality products?
All the production and processing are strictly according to ISO 9001:2008 and API standard. At the same time, mature production technology ensuring the quality satisfy international request. We also welcome the third party inspection, such as BV, SGS and TUV.
The information you may like to know before Payment:
1. Methods of Payment:
T/T (Telegraphic Transfer) or L/C at sight
2. Shipping way
Sample order: we suggest Courier express like DHL/UPS/TNT/FEDEX or by air
Bulk order: we suggest by air or by sea.
3. Quality Control
We have our own experienced QC.
There will be strict inspection and testing for every order before shipping out.
Suppliers with verified business licenses
Audited Supplier 
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