Shanxi Xinshunda Flange Manufacturing Co., Ltd. supplies super-high-pressure API 10000 LB flanges engineered for extreme-service wellhead, Christmas tree, manifold and oilfield pressure control systems. Manufactured in full compliance with API 6A, our 10000 LB flanges provide superior pressure bearing capacity, metal-to-metal sealing reliability and stable structural integrity under the harshest downhole operating conditions. With 19 years of professional forging and precision machining experience, we are a qualified supplier for global onshore and offshore oil & gas projects.
Product Description
API 10000 LB flanges are heavy-duty super-high-pressure flanges designed for critical oilfield equipment in accordance with API 6A, with a rated working pressure of 10000 psi (68.9 MPa). They adopt a precision-machined Ring Type Joint (RTJ) sealing structure to achieve zero-leakage metal-to-metal sealing under ultra-high pressure and extreme temperature fluctuations. Our API 10000 LB flanges are produced from high-strength alloy steel forgings with complete heat treatment and full-process quality control, making them ideal for wellheads, Christmas trees, manifolds, choke valves and high-pressure transmission systems in demanding oilfield environments.
Product Feature and Application
Key Features
- Ultra-high-pressure rating 10000 psi for extreme oilfield service
- Strictly compliant with API 6A dimensional and performance specifications
- RTJ metal-to-metal sealing ensures zero leakage under severe conditions
- High-strength alloy forging with optimized grain structure and mechanical properties
- Excellent resistance to high temperature, corrosion, fatigue and impact
- High machining precision and full interchangeability with wellhead equipment
- Complete material traceability and full quality documentation
- Multiple end connections to satisfy different assembly requirements
Typical Applications
- Onshore & offshore oil & gas wellhead equipment
- Christmas tree and manifold piping systems
- High-pressure drilling and well control systems
- Choke & kill valve assemblies
- Pressure testing and stimulation equipment
- Ultra-high-pressure oil transmission pipelines
- Critical service in petroleum production & processing
Product Parameter
| Standard | API 6A, 10000 LB / 10000 psi |
| Working pressure | 10000 psi (68.9 MPa) |
| Test pressure | 15000 psi |
| Nominal size | 1-13/16″ – 9″ |
| Face type | Ring Type Joint (RTJ) – R, RX, BX |
| Temperature rating | −60 °C to +345 °C (K to Y rating) |
|
Materials |
Alloy steel: A182 F11, F22, F91, F92 Stainless steel: F316, F316L, F321, F347 High-strength alloy: 4130, 4140, 8630 |
| Connection types | Weld Neck, Blind, Integral, DSA, Swivel |
| Certification | API 6A Certificate, EN 10204 3.1 MTC |
| Performance level | PR1, PR2 |
Production Details
Each API 10000 LB flange is manufactured under full-process quality control:
- Raw material inspection with mill certification and spectral analysis
- Closed-die forging for uniform structure and enhanced mechanical strength
- Standardized heat treatment to meet hardness and tensile requirements
- High-precision CNC machining for RTJ grooves, bolting and dimensions
- 100% dimensional inspection via CMM and precision measuring tools
- Full NDT: magnetic particle testing (MT), ultrasonic testing (UT)
- Hydrostatic testing to verify pressure safety and sealing integrity
- Anti-corrosion surface treatment and permanent marking
- Full traceability from raw material to finished product
Production Display
Our factory is ISO 9001 & API Q1 certified, equipped with large-tonnage forging presses, high-rigidity CNC machining centers, automatic heat treatment lines and professional NDT laboratories. We implement strict process control and complete documentation. Third-party inspection by SGS, BV, TÜV or customer-appointed institutions is available upon request.
Packaging & Transportation
- Surface treatment: Anti-corrosion oil, varnish, black paint or customized coating
- Packaging: Protective wrapping, reinforced wooden cases, steel pallets
- Labeling: Heat number, size, pressure class, material, standard, API mark, batch
- Documents: Commercial invoice, packing list, certificate of origin, API MTC
- Transportation: Sea, air and express delivery for global oilfield projects
- Safe and stable logistics for super-high-pressure flange products
After-sales Service
We provide full life-cycle technical support for API 10000 LB flanges:
- Professional consultation on wellhead matching, installation and operation
- Custom design for special sizes, materials and end connections
- Timely response to after-sales inquiries and quality claims
- On-site technical guidance and remote support
- Stable long-term supply for large-scale oilfield projects
Why Choose Shanxi Xinshunda?
- 19 years of professional flange manufacturing serving global oil & gas clients
- Full compliance with API 6A and international quality standards
- Advanced forging & machining capabilities for super-high-pressure flanges
- Strict quality control and complete testing & certification documents
- Competitive factory pricing and reliable on-time delivery
- Multilingual sales & technical support and global logistics service
Contact us today for product catalogs, quotations or customized solutions for your API 10000 LB flange oilfield projects.
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