XI‘AN ZZTOP OIL TOOLS CO.，LTD
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API 6A Wellhead Blind Flange 3 1/8" x 5000 psi Alloy Steel Flange
The Wellhead Blind Flange is manufactured as per API specification. The API Blind Flange with no opening or center bore, normally used to close-off completely an unused line or connection; the ends of a piping system, or pressure vessel. After being sealed, and re-opened, the Blind flange permits easy access to the interior of a line or vessel. Downstream, a modification of a blind flange – Target flange (with a counter bore filled with lead) – is used to cushion and reduce the erosive effect of high velocity abrasive fluid. Though there has been caution in using lead, as a problem can occur if the lead filling in the cavity escapes the cavity and moves into the flow bore blocking the flow.
Technical parameter of the wellhead blind flnage
| Working pressure | 2000 PSI - 20000 PSI |
| Working medium | Oil, Natural Gas, Mud |
| Working temperature | -46°C -121℃ |
| Material class | AA – HH |
| Specification class | PSL1 - PSL4 |
| Performance class | PR1 - PR2 |
Specification of blind flange
| Rated working pressure/psi | Flange size range | |
| Type 6B (in) | Type 6BX (in) | |
| 2000 | 2-1/16" ~ 21-1/4" | 26-3/4" ~ 30" |
| 3000 | 2-1/16" ~ 20-1/4" | 26-3/4" ~ 30" |
| 5000 | 2-1/16" ~ 11" | 13-5/8" ~ 21 1/4" |
| 10000 | - | 5-1/8" ~ 21 1/4" |
| 15000 | - | 5-1/8" ~18 3/4" |
| 20000 | - | 7-1/16" ~13 5/4" |
About JC Wellhead
With profession engineers we also offer the R&D service to the clients who have special requirements in the oilfield drilling operation and production operation.Yancheng Jing Cheng Petroleum Machinery Manufacturing Co,Ltd is engaged in manufacture and supply wellhead equipment include wellhead -Tree, casing head, casing hanger, tubing head, tubing hanger, casing spool, tubing spool, Gate valve, Adjustable Choke valve, Positive Choke Valve, Check valve,VR plug,Running tool, Wear bushing, spacer spool, riser spool adapter, union flange adapter, flange adapter, union flange, Hammer union, Elbow, swivel joint, block cross, Block Tee, companion flange, instrument flange, weldneck flange, FC gate, FC seat, FC stem, API Clamp, API Clamp Hub and various high pressure manifold such as choke manifold, kill manifold, drilling floor manifold, surface testing manifold etc
JC WELLHEAD 's advantage:
* Excellent and stable quality of the products conformed with API and ISO standard
* Strict quality control on raw material and machining, we can arrange the SGS or BV to witness the test
* We supply various wellhead products to meet the customers' operation.
* Timely delivery, professional service on export procedure,
* Product guarantee and best after-sales service.