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Prime Steel takes pride in being a leading force in the manufacturing and supply of API 6A flanges. As a specialized entity in the steel industry, we have carved a niche for ourselves by consistently delivering high-quality solutions tailored to the unique needs of our clients. At the heart of our operations is a steadfast commitment to excellence. Our API 6A flanges, crucial components in the oil and gas sector, exemplify our dedication to precision engineering and adherence to the highest industry standards.
API Specification Compliance
Material Selection
Pressure and Temperature Ratings
Flange Type and Size
Corrosion Resistance
American Petroleum Institute (API) API 6A, 6bx, 4130 , 6bx
DN 46 (NPS 1-13/16") to DN 345 (NPS 13-5/8")
2,000 psi, 3,000 psi, 5,000 psi, 10,000 psi, 15,000 psi, 20,000 psi
Flat Face (FF), Raised Face (RF), Ring Joint Face (RTJ)
Stainless Steel, Carbon Steel, Low Alloy Steel, Duplex and Super Duplex Stainless Steel, Nickel Alloys
Wellhead Systems, Christmas Tree Assemblies, Manifolds and Flowlines, Drilling Equipment, Subsea Applications
API 6A flanges are available in various pressure classes, also referred to as pressure ratings. The pressure class indicates the flange's ability to withstand different levels of pressure in a specific operating environment. The API 6A standard defines several pressure classes to accommodate the diverse requirements of wellhead and Christmas tree equipment in the oil and gas industry. Common API 6A pressure classes include:
The term "API 6a Flange" is essentially referring to a flange that conforms to the specifications outlined in the American Petroleum Institute (API) Specification 6A. In other words, it's a flange that is designed and manufactured according to the standards set by API 6A for use in the oil and gas industry.
API 6A is a comprehensive standard developed by the American Petroleum Institute (API) that outlines the requirements for wellhead and Christmas tree equipment. This includes specifications for various components, and API 6A flanges are specifically designed to meet the standards set forth in this specification. A flange labeled as an API 6A flange is one that adheres to the dimensional, material, and testing specifications outlined in API 6A.
Design and Specifications: API 6A flanges are designed to meet specific criteria related to dimensions, materials, pressure ratings, and other factors as outlined in the API 6A standard. The design aims to ensure the reliability, safety, and performance of the flanges in the demanding conditions of oil and gas operations.
Pressure Ratings: API 6A flanges come in various pressure classes or ratings to accommodate different pressure requirements. Common pressure classes include 2,000 psi, 3,000 psi, 5,000 psi, 10,000 psi, 15,000 psi, and 20,000 psi, depending on the application and the operating conditions.
Material Options: API 6A flanges can be manufactured from different materials, such as carbon steel, low alloy steel, stainless steel, duplex and super duplex stainless steel, and nickel alloys. The choice of material depends on factors like corrosion resistance, temperature, and pressure requirements.
Flange Face Types: API 6A flanges may have different face types, including raised face (RF), ring joint face (RTJ), and flat face (FF). The face type influences the sealing mechanism and gasket selection for a secure and leak-free connection.
Applications: API 6A flanges are used in various applications within the oil and gas industry, including wellhead systems, Christmas tree assemblies, manifolds, flowlines, drilling equipment, and subsea applications. They provide critical connections between different components, ensuring the integrity of the overall production system.
Quality and Testing: API 6A mandates rigorous quality control measures and testing procedures to ensure the reliability and performance of the flanges. This includes non-destructive testing (NDT) methods to detect potential defects and ensure compliance with the API 6A standard.
Check API 6A Flange Dimensions Download
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ISO 10423:2009 - Petroleum and natural gas industries — Drilling and production equipment — Wellhead and Christmas tree equipment:
ISO 13628-4:2010 - Petroleum and natural gas industries — Design and operation of subsea production systems — Part 4: Subsea wellhead and tree equipment:
API 6A: Specification for Wellhead and Christmas Tree Equipment:
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API 6D: Specification for Pipeline Valves:
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API 16A: Specification for Drill Through Equipment:
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API 6A: Specification for Wellhead and Christmas Tree Equipment:
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API 600: Steel Gate Valves - Flanged and Butt-welding Ends, Bolted Bonnets:
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