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T: +86-15990630008
E: info@chinahdm.com
E: info@chinahdm.com
Industrial zone, Binhai, Jiaojiang, Taizhou, Zhejiang, China
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The 87612 Flange stands as a high-performance solution engineered specifically for 6000 PSI hydraulic systems requiring uncompromising reliability in extreme pressure environments. As a fully compliant SAE J518 Code 62 component, this flange is designed to handle the most demanding hydraulic applications where system integrity and leak-free operation are critical. Its robust construction and precision engineering make it an indispensable component in heavy-duty hydraulic systems where failure is not an option, providing peace of mind across industries that rely on high-pressure hydraulic performance. The 87612 flange sets itself apart through its ability to maintain sealing integrity under continuous high-pressure operation while offering ease of installation and broad compatibility with industry-standard components.
Engineered for extreme pressure applications, the 87612 Flange boasts a maximum operating pressure rating of 6,000 PSI (414 bar), with surge pressure handling capabilities up to 9,000 PSI (621 bar) for short-duration events. This flange fully complies with the latest SAE J518 Code 62 specifications, ensuring dimensional consistency and interchangeability with other Code 62 components from leading manufacturers. Its design includes enhanced pressure containment features including a reinforced hub section and optimized bolt pattern that distribute clamping forces across the sealing surface, exceeding basic industry requirements for critical applications.
Manufactured from AISI 4140 chrome-moly steel forged bar stock, the 87612 Flange offers superior tensile strength and impact resistance compared to standard carbon steel flanges. The material undergoes a specialized quenched and tempered heat treatment to achieve a minimum tensile strength of 120,000 PSI and yield strength of 95,000 PSI, ensuring exceptional durability under extreme pressure conditions. The flange face features a precision-machined 30° sealing bevel with a serrated surface finish (32 RMS) that enhances gasket retention and ensures uniform pressure distribution. All surfaces receive a zinc-nickel plating treatment with a minimum thickness of 10 microns, providing superior corrosion resistance verified through 200-hour salt spray testing.
The 87612 High-Pressure Flange is available in sizes ranging from DN16 to DN100 (3/4" to 4" nominal pipe sizes), accommodating a wide range of high-flow hydraulic system configurations. It features a four-bolt pattern with standardized hole spacing conforming to SAE J518 specifications, ensuring compatibility with industry-standard flange clamps and hardware. The flange is offered in both weld-on hub and threaded end configurations, with threaded versions featuring NPTF threads for secure pipe connection. Specialized configurations, including reducing flanges, elbow flanges, and blind flanges, are available to meet specific system design needs in high-pressure circuits.
In industrial settings, the 87612 Flange is widely utilized in high-pressure hydraulic systems for metal forming presses, extrusion machinery, and heavy-duty industrial presses. It provides critical connections in main hydraulic circuits that generate the extreme forces needed for metal fabrication processes, where system downtime can result in significant production losses and safety hazards.
The 87612 Flange plays a vital role in oil and gas exploration and production equipment, including blowout preventer systems, well stimulation equipment, and hydraulic power units for drilling rigs. Its ability to withstand constant high pressure while resisting corrosion from harsh drilling fluids and environmental conditions makes it ideal for upstream oil and gas operations where equipment reliability directly impacts operational safety and productivity.
In the mobile hydraulics sector, this high-pressure flange is a key component in large construction machinery, mining equipment, and heavy lift cranes. It provides secure connections in hydraulic circuits powering large boom cylinders, hydraulic winches, and main hydraulic pumps that operate under extreme pressure during heavy lifting, earthmoving, and material handling operations in demanding environments.
The 87612 Flange incorporates several enhanced features for 6,000 PSI service: its forged AISI 4140 chrome-moly steel construction provides 30% higher tensile strength than standard carbon steel flanges; the precision-machined sealing surface with tighter tolerances ensures more consistent gasket compression; and its reinforced hub design reduces stress concentration under pressure. The 87612 also features an extended neck length that provides greater clearance for welding and reduces thermal transfer to gaskets in high-temperature applications, making it suitable for environments where standard flanges might fail under continuous high-pressure operation.
The 87612 Flange requires SAE Code 62 gaskets specifically designed for high-pressure applications up to 6,000 PSI. Recommended gasket materials include spiral-wound stainless steel with graphite filler for high-temperature applications up to 650°F (343°C) and elastomer-bonded metal for dynamic pressure environments with frequent pressure cycling. For applications involving aggressive fluids or corrosive environments, Inconel® metal wound gaskets with PTFE filler are recommended to ensure chemical compatibility and long-term sealing performance. Gaskets must be replaced whenever flanges are disconnected, even if they appear undamaged.
Proper installation torque varies by flange size and bolt material, ranging from 85 ft-lbs for 3/4" flanges with 5/8" Grade 8 bolts to 320 ft-lbs for 4" flanges with 1-1/4" Grade 8 bolts. The bolts must be tightened in a sequential crisscross pattern, beginning with 30% of final torque, followed by 60%, and finishing with 100% of the recommended specification. This procedure ensures uniform clamping force across the flange face. A calibrated torque wrench must be used, and torque should be rechecked after initial system operation and thermal cycling to account for gasket compression and material relaxation.
Yes, while primarily designed to SAE J518 Code 62 specifications, the 87612 Flange is dimensionally compatible with ISO 6162-2 standards for high-pressure hydraulic flanges. This compatibility allows for integration with hydraulic components manufactured to international standards, facilitating global equipment design and component sourcing. When connecting to non-SAE components, we recommend verifying dimensional compatibility, particularly regarding bolt hole spacing, flange thickness, and sealing surface geometry to ensure proper sealing at 6,000 PSI operating pressure.
The 87612 Flange stands as a high-performance solution engineered specifically for 6000 PSI hydraulic systems requiring uncompromising reliability in extreme pressure environments. As a fully compliant SAE J518 Code 62 component, this flange is designed to handle the most demanding hydraulic applications where system integrity and leak-free operation are critical. Its robust construction and precision engineering make it an indispensable component in heavy-duty hydraulic systems where failure is not an option, providing peace of mind across industries that rely on high-pressure hydraulic performance. The 87612 flange sets itself apart through its ability to maintain sealing integrity under continuous high-pressure operation while offering ease of installation and broad compatibility with industry-standard components.
Engineered for extreme pressure applications, the 87612 Flange boasts a maximum operating pressure rating of 6,000 PSI (414 bar), with surge pressure handling capabilities up to 9,000 PSI (621 bar) for short-duration events. This flange fully complies with the latest SAE J518 Code 62 specifications, ensuring dimensional consistency and interchangeability with other Code 62 components from leading manufacturers. Its design includes enhanced pressure containment features including a reinforced hub section and optimized bolt pattern that distribute clamping forces across the sealing surface, exceeding basic industry requirements for critical applications.
Manufactured from AISI 4140 chrome-moly steel forged bar stock, the 87612 Flange offers superior tensile strength and impact resistance compared to standard carbon steel flanges. The material undergoes a specialized quenched and tempered heat treatment to achieve a minimum tensile strength of 120,000 PSI and yield strength of 95,000 PSI, ensuring exceptional durability under extreme pressure conditions. The flange face features a precision-machined 30° sealing bevel with a serrated surface finish (32 RMS) that enhances gasket retention and ensures uniform pressure distribution. All surfaces receive a zinc-nickel plating treatment with a minimum thickness of 10 microns, providing superior corrosion resistance verified through 200-hour salt spray testing.
The 87612 High-Pressure Flange is available in sizes ranging from DN16 to DN100 (3/4" to 4" nominal pipe sizes), accommodating a wide range of high-flow hydraulic system configurations. It features a four-bolt pattern with standardized hole spacing conforming to SAE J518 specifications, ensuring compatibility with industry-standard flange clamps and hardware. The flange is offered in both weld-on hub and threaded end configurations, with threaded versions featuring NPTF threads for secure pipe connection. Specialized configurations, including reducing flanges, elbow flanges, and blind flanges, are available to meet specific system design needs in high-pressure circuits.
In industrial settings, the 87612 Flange is widely utilized in high-pressure hydraulic systems for metal forming presses, extrusion machinery, and heavy-duty industrial presses. It provides critical connections in main hydraulic circuits that generate the extreme forces needed for metal fabrication processes, where system downtime can result in significant production losses and safety hazards.
The 87612 Flange plays a vital role in oil and gas exploration and production equipment, including blowout preventer systems, well stimulation equipment, and hydraulic power units for drilling rigs. Its ability to withstand constant high pressure while resisting corrosion from harsh drilling fluids and environmental conditions makes it ideal for upstream oil and gas operations where equipment reliability directly impacts operational safety and productivity.
In the mobile hydraulics sector, this high-pressure flange is a key component in large construction machinery, mining equipment, and heavy lift cranes. It provides secure connections in hydraulic circuits powering large boom cylinders, hydraulic winches, and main hydraulic pumps that operate under extreme pressure during heavy lifting, earthmoving, and material handling operations in demanding environments.
The 87612 Flange incorporates several enhanced features for 6,000 PSI service: its forged AISI 4140 chrome-moly steel construction provides 30% higher tensile strength than standard carbon steel flanges; the precision-machined sealing surface with tighter tolerances ensures more consistent gasket compression; and its reinforced hub design reduces stress concentration under pressure. The 87612 also features an extended neck length that provides greater clearance for welding and reduces thermal transfer to gaskets in high-temperature applications, making it suitable for environments where standard flanges might fail under continuous high-pressure operation.
The 87612 Flange requires SAE Code 62 gaskets specifically designed for high-pressure applications up to 6,000 PSI. Recommended gasket materials include spiral-wound stainless steel with graphite filler for high-temperature applications up to 650°F (343°C) and elastomer-bonded metal for dynamic pressure environments with frequent pressure cycling. For applications involving aggressive fluids or corrosive environments, Inconel® metal wound gaskets with PTFE filler are recommended to ensure chemical compatibility and long-term sealing performance. Gaskets must be replaced whenever flanges are disconnected, even if they appear undamaged.
Proper installation torque varies by flange size and bolt material, ranging from 85 ft-lbs for 3/4" flanges with 5/8" Grade 8 bolts to 320 ft-lbs for 4" flanges with 1-1/4" Grade 8 bolts. The bolts must be tightened in a sequential crisscross pattern, beginning with 30% of final torque, followed by 60%, and finishing with 100% of the recommended specification. This procedure ensures uniform clamping force across the flange face. A calibrated torque wrench must be used, and torque should be rechecked after initial system operation and thermal cycling to account for gasket compression and material relaxation.
Yes, while primarily designed to SAE J518 Code 62 specifications, the 87612 Flange is dimensionally compatible with ISO 6162-2 standards for high-pressure hydraulic flanges. This compatibility allows for integration with hydraulic components manufactured to international standards, facilitating global equipment design and component sourcing. When connecting to non-SAE components, we recommend verifying dimensional compatibility, particularly regarding bolt hole spacing, flange thickness, and sealing surface geometry to ensure proper sealing at 6,000 PSI operating pressure.