GB/T & HG/T Flanges | Chinese Flange Manufacturer
Fulihua Pipeline Equipment is a dedicated manufacturer of GB/T and HG/T standard flanges, produced at our intelligent forging facility in Sishui County, Shandong Province. As a China-based manufacturer with over 20 years of forging experience, we supply GB/T flanges for domestic infrastructure, energy, and industrial projects, and HG/T flanges for chemical processing plants and petrochemical facilities — both inside China and for overseas projects built to Chinese engineering specifications. With full in-house control over raw material sourcing, forging, CNC machining, and inspection, Fulihua is your direct-source manufacturer, not a trading company.
Specifications
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Standards: GB/T 9124.1, GB/T 9124.2,
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Size Range: DN 10 – DN 2000 (custom sizes available)
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Pressure Ratings (PN): PN 2.5, 6, 10, 16, 25, 40, 63, 100, 160, 250, 320, 400
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Flange Types: Plate Flange, Weld Neck Flange, Blind Flange, Threaded Flange, Socket Weld Flange, Lap Joint Flange
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Face Types: Raised Face (RF), Flat Face (FF), Concave & Convex (MF), Tongue & Groove (TG), Ring Type Joint (RJ)
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Carbon Steel: 20#, Q235B, Q345R, 16Mn
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Stainless Steel: 06Cr19Ni10 (304 / S30408), 022Cr19Ni10 (304L / S30403), 06Cr17Ni12Mo2 (316 / S31608), 022Cr17Ni12Mo2 (316L / S31603)
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Duplex Stainless: S22053 (2205), S25073 (2507)
Why Choose Fulihua for GB/T & HG/T Flanges?
Being a direct manufacturer in China gives Fulihua a fundamental cost and lead-time advantage over trading companies and overseas distributors. Our Shandong facility is equipped with CNC ring rolling machines, automated forging lines, and a MES digital production management system — giving us full traceability from raw material heat to finished product. We provide material certificates (Mill Certificates), dimensional inspection reports, hydrostatic test reports, and third-party inspection by SGS, Bureau Veritas, or TÜV upon request. English-language documentation is available for all export orders.