AlienFrac manufactures API 6A flanges for high-pressure wellhead, Christmas tree, manifold and oilfield pressure-control connections. We supply API 6B and API 6BX flange connections in weld neck, blind, threaded, test, target, adapter and companion designs, with pressure ratings from 2,000 PSI to 20,000 PSI according to your project datasheet.
Send us your size, pressure rating, material class, PSL/PR requirement, temperature class, service condition and quantity. Our engineering team will confirm the correct flange type, ring gasket, bolting requirement and inspection documents before quotation.
API 6A – 6B 13.8 MPA (2000 PSI)
API 6A – 6B 20.7 MPA (3000 PSI)
API 6A – 6B 34.5 MPA (5000 PSI)
API 6A – 6BX 13.8 MPA (2000 PSI)
API 6A – 6BX 20.7 MPA (3000 PSI)
API 6A – 6BX 34.5 MPA (5000 PSI)
API 6A – 6BX 69.0 MPA (10000 PSI)
API 6A – 6BX 103.5 MPA (15000 PSI)
API 6A – 6BX 138.0 MPA (20000 PSI)
Tolerance and ring gasket according to API 6A – 20TH.
• API 6B and API 6BX flange options for 2,000–20,000 PSI projects
• Weld neck, blind, threaded, test, target, adapter and companion flange designs
• Forged steel, alloy steel, stainless steel and project-specified materials available
• RTJ ring gasket matching and bolting confirmation before production
• MTR, dimensional inspection, heat-treatment records and traceability on request
• OEM/private-label and export packing support for global oilfield buyers
API 6A flanges are pressure-containing connectors used on upstream oil and gas equipment where ordinary industrial pipe flanges are not enough. They are designed for wellhead and Christmas tree service, RTJ metal sealing, defined pressure ratings and strict material/quality requirements.
Used where a strong butt-welded connection is required. The long tapered hub helps distribute stress and supports high-pressure wellhead and manifold connections.
Used to close pressure outlets, valve ends and test connections. Blind flanges are commonly requested for pressure isolation, maintenance and hydrostatic testing.
Ring-joint flanges commonly selected for lower and medium API 6A pressure classes such as 2,000, 3,000 and 5,000 PSI.
Compact high-pressure RTJ connections used where higher working pressure and reliable metal-to-metal sealing are required. Common requests include 10,000, 15,000 and 20,000 PSI connections.
Threaded, Adapter, Companion, Test and Target Flanges: Supplied according to drawing, equipment interface and project data sheet. Share your end connection, thread, bore, ring gasket and pressure requirement for engineering confirmation.
AlienFrac manages API flanges production through material selection, forging, heat treatment, CNC machining, dimensional inspection and documentation control. For project orders, we can prepare a document package such as material test report, heat number traceability, dimensional inspection report, surface inspection, packing list and certificate files according to your procurement requirement.
API 6A flanges are used in wellhead assemblies, Christmas tree equipment, drilling and production manifolds, choke and kill manifolds, high-pressure valve connections, pressure-control skids, offshore platform equipment and oilfield maintenance packages.
An API 6A flange is a high-pressure flange connection used on wellhead, Christmas tree and oilfield pressure-control equipment. It is designed for defined pressure ratings, RTJ metal sealing and strict material/quality requirements.
API 6B flanges are commonly used for lower and medium API 6A pressure classes such as 2,000–5,000 PSI. API 6BX flanges are compact high-pressure RTJ connections often selected for 10,000–20,000 PSI service. Always select according to the equipment datasheet.
AlienFrac lists API 6A 6B ratings of 13.8, 20.7 and 34.5 MPa, and API 6A 6BX ratings of 13.8, 20.7, 34.5, 69.0, 103.5 and 138.0 MPa, corresponding to 2,000–20,000 PSI classes.
Common types include weld neck flanges, blind flanges, threaded flanges, test flanges, target flanges, adapter flanges and companion flanges. Custom drawing flanges can be reviewed by engineering.
Typical materials include forged alloy steels such as AISI 4130/4140, carbon steel grades such as ASTM A105/A105N, ASTM A694 grades and stainless or corrosion-resistant alloys when specified by the project.
Yes, API 6A flange connections commonly use RTJ metal ring gaskets. The correct R, RX or BX ring number must match the flange design, pressure rating and equipment datasheet.
Yes. Send the flange type, size/bore and pressure rating, and AlienFrac can confirm the drawing, dimensions, bolt pattern, ring gasket and estimated weight before production.
Common documents include MTR, heat number traceability, dimensional inspection report, heat treatment record, surface inspection, packing list and certificate package. Third-party inspection can be arranged if required.
Send the flange type, size, pressure rating, material class, PSL/PR requirement, temperature class, service condition, ring gasket, quantity, destination and required documents.
Yes. AlienFrac can support OEM, private-label and distributor orders with export packing and project documentation according to confirmed technical and commercial requirements.
