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High-Pressure & High-Temperature Piping Systems Alloy Steel Flanges custom

High-Pressure & High-Temperature Piping Systems Alloy Steel Flanges Manufacturers

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Material & Manufacturing Process

Alloy Steel Flanges for High-Pressure & High-Temperature Piping Systems GX Fitting manufactures alloy steel flanges designed for high-pressure, high-temperature and demanding industrial applications. Our alloy steel flanges are produced from materials such as ASTM A182 F5, F9, F11, F12, F22, F91 and other alloy grades according to customer requirements. The manufacturing process includes forging, heat treatment, machining, dimensional inspection and surface finishing to ensure stable mechanical properties and reliable performance. Raw materials are strictly verified through chemical analysis and material traceability control. Mechanical testing, hardness testing and non-destructive testing can be performed according to project specifications. With manufacturing experience since 1993, GX Fitting provides customized flange solutions for EPC projects, power plants, refineries and energy industries.

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Product

Alloy Steel Flanges Technical Specifications

ParameterSpecification Detail
Material GradeASTM A182 F5, F9, F11, F12, F22, F91
Design StandardASME B16.5, ASME B16.47
Pressure ClassClass 150, 300, 600, 900, 1500, 2500
Flange TypesWeld Neck, Slip-On, Blind, Socket Weld, Customized Forged
TestingUT, RT, PT, MT, hardness testing
CertificationPED, AD2000, DNV, ABS, BV, ISO

Specification Range

GX Fitting supplies alloy steel flanges in a wide range of sizes, pressure ratings and configurations for industrial piping systems. Our product range includes Weld Neck Flanges, Slip-On Flanges, Blind Flanges, Socket Weld Flanges and Customized Forged Flanges. Flanges can be manufactured according to international standards including ASME B16.5, ASME B16.47, ASTM, EN and customer-specific specifications. We support various pressure classes including Class 150, 300, 600, 900, 1500 and 2500, depending on material grade and project requirements. Customized dimensions, special facing requirements and non-standard designs can be evaluated by our engineering team. Full material traceability and EN 10204 3.1 documentation are available to support demanding EPC and industrial projects.

Product Advantages

GX Fitting combines advanced forging technology with more than 30 years of manufacturing experience to provide reliable alloy steel flange solutions.

  • Special Alloy & Customized Capability: Our advantages include strong capability in special alloy materials, customized production, strict quality control and project-oriented manufacturing support.
  • Strength & Temperature Performance: Alloy steel flanges manufactured by GX Fitting provide excellent strength, temperature resistance and durability for critical piping applications.
  • Comprehensive Quality System: Our quality system covers raw material inspection, forging control, heat treatment monitoring, dimensional verification and final inspection. Additional testing, including UT, RT, PT, MT, hardness testing and third-party inspection, can be arranged according to project requirements.
  • International Certification: Supported by certifications including PED, AD2000, DNV, ABS, BV and ISO systems, GX Fitting delivers reliable flange solutions for global EPC contractors and industrial customers.

Applications

Alloy steel flanges are widely used in industries where high strength, elevated temperature resistance and long-term reliability are required. Typical applications include oil and gas, refinery, petrochemical, power generation, chemical processing, steam systems, energy projects and heavy industrial facilities. Materials such as F11, F22 and F91 are commonly selected for high-temperature and high-pressure piping systems, including boilers, turbines and power plant applications. GX Fitting supports EPC contractors, engineering companies, distributors and end users with standard and customized alloy steel flange solutions. Our experience in large-diameter, heavy-wall and special material components allows us to support complex projects requiring strict technical compliance, complete documentation and reliable delivery performance.

  • Q: What alloy steel grades are available for Alloy Steel Flanges?
  • A: We manufacture alloy steel flanges from ASTM A182 F5, F9, F11, F12, F22, F91 and other alloy grades according to customer requirements.
  • Q: What pressure classes are available?
  • A: Alloy steel flanges can be supplied in various pressure classes up to Class 2500, in Weld Neck, Slip-On, Blind, Socket Weld and customized forged designs.
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Jiangyin Gaoxin Pipe Fittings Co., Ltd.
About Us
JIANGYIN GAOXIN PIPE FITTINGS CO.,LTD.
Our company is a professional manufacturer of pressure piping components. As High-Pressure & High-Temperature Piping Systems Alloy Steel Flanges Manufacturers，Our product range covers butt-weld, socket-weld, and threaded pipe fittings, including flanges and customized non-standard parts. These products are widely used in industries such as oil & gas, chemical processing, power generation, shipbuilding, papermaking, metallurgy, pharmaceuticals, and food processing. We manufacture according to standards such as ASME, EN,JIS,DIN,ANSI,GOST, MSS, GB/T,HG, DL, SH, SY,and have a complete range of inspection equipment, a strict quality control system, and various certifications（PED,AD2000,EAC, ABS,BV, DNV,NORSOK M650, ISO9001,ISO14001,ISO45001,etc.）, making us a leader in the industry.

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