Since 1982 · Pressure piping components manufacturerReply in 4 h+86 132 9342 5333haihaojituan@163.com
Hebei Haihao Group Huadian High Pressure Pipe Fittings Co., Ltd.
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Hebei Haihao Group Huadian High Pressure Pipe Fittings Co., Ltd.Hebei Haihao Group Huadian High Pressure Pipe Fittings Co., Ltd.Pressure Pipe Fittings · Flanges · Factory Direct

Since 1982. Pressure piping component manufacturer covering elbows, flanges, tees, reducers and project supply.

ISO 9001 quality system · ABS Type Approval · safety-registered manufacturer

Products

  • Elbow
  • Tee
  • Reducer
  • Flange
  • Pipe Bend

Company

  • About
  • Application Scenarios
  • Certificates
  • Contact

Services

  • Send inquiry
  • Material reference
  • Insights
  • Feedback

Contact

  • Donglin, Mengcun County, Cangzhou City, Hebei Province, China
  • +86 132 9342 5333
  • haihaojituan@163.com
  • www.haihaohuadian.com

Global delivery

· Shipping to projects in

Middle East

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CIS

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Europe

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SE Asia

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East Asia

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South Asia

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Americas

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Africa

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Oceania

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© 2026 Hebei Haihao Group Huadian High Pressure Pipe Fittings Co., Ltd. · All rights reserved.

PrivacyTermsEstablished 1982 · Mengcun, Hebei, China

Core Products

Products Center

Select pipe fittings and flanges by drawing, standard and service condition. Haihao supplies butt-weld fittings, forged flanges, bends, pipe accessories and project piping packages with material, size, pressure class and inspection requirements confirmed.

AllElbowTeeReducerCapInduction BendsPipe AccessoriesFlangeSocket Fittings and Outlets
Core ProductsProduct Range

Covers common fittings, flanges, bends and project supply items, with RFQ support by standard, material and drawing.

Categories

  • All categories
  • Elbow
  • Tee
  • Reducer
  • Cap
  • Induction Bends
Send inquiry
Pipe Accessories
  • Flange
  • Socket Fittings and Outlets
  • Material

    • Carbon Steel (WPB / WPC)
    • Alloy Steel (WP1 / WP11 / WP12 / WP22 / WP91)
    • Stainless Steel (304 / 316 / 321)
    • Low-Temp Steel (WPL6)

    Standard

    • ASTM A234
    • ASTM A403
    • ASTM A420
    • ASME B16.9
    • ASME B16.5
    • MSS SP-75
    • EN 10253

    Size band

    • ≤ DN50
    • DN50 - DN200
    • DN200 - DN600
    • > DN600

    Pressure class

    • Low (PN10–16 / Class 150)
    • Standard (PN25–40 / Class 300)
    • High (PN64+ / Class 600–900)
    • Ultra-high (Class 1500+ / SCH XXS)

    More Piping Products

    Forged FittingPipeWear-resistant FittingGrooved FittingMalleable FittingSpray Pipe and Tank FirefightingStub End and Backing RingLined FittingProfile BendAnti-corrosion and Insulation FittingPower Plant PartPipe SupportPrefabricated Piping

    Contact Us

    • Donglin, Mengcun County, Cangzhou City, Hebei Province, China
    • +86 132 9342 5333
    • haihaojituan@163.com
    Send inquiry
    Active filtersLow (PN10–16 / Class 150)ClearClear all

    15 products

    锻制法兰产品图Flange

    Forged Flanges and Nonstandard Forgings

    Forged flanges and nonstandard forgings for industrial piping packages.

    Material / Standard
    Carbon Steel, Stainless Steel, Alloy Steel
    Size range
    ASME/ANSI B16.5 / B16.47 ranges shown in company profile
    View details
    Forged Flange - 法兰 (1)Flange

    Forged Flange

    Forged steel flanges — welding-neck, slip-on, socket-weld, threaded and blind — for high, medium and low pressure piping.

    Material / Standard
    ASTM A105 / A182 / A350; carbon, alloy and stainless steel
    Size range
    1/2" - 60" (DN15 - DN1500)
    View details
    Socket Weld Flange - 承插法兰 (1)Flange

    Socket Weld Flange

    Forged steel flanges — welding-neck, slip-on, socket-weld, threaded and blind — for high, medium and low pressure piping.

    Material / Standard
    ASTM A105 / A182 F11/F22/F304/F316; GB/T carbon, alloy, stainless steel
    Size range
    1/2" - 4" (DN15 - DN100)
    View details
    Socket Weld Flange - 承插法兰 (1)Flange

    Socket Weld Flange

    Forged steel flanges — welding-neck, slip-on, socket-weld, threaded and blind — for high, medium and low pressure piping.

    Material / Standard
    ASTM A105 / A182 F11/F22/F304/F316; GB/T carbon, alloy, stainless steel
    Size range
    1/2" - 4" (DN15 - DN100)
    View details
    Welding Neck Flange - 带颈对焊法兰 (1)Flange

    Welding Neck Flange

    Forged steel flanges — welding-neck, slip-on, socket-weld, threaded and blind — for high, medium and low pressure piping.

    Material / Standard
    ASTM A105 / A182 F11/F22/F304/F316/F347; A350 LF2; carbon, alloy, stainless
    Size range
    1/2" - 60" (DN15 - DN1500)
    View details
    Welding Neck Flange - 带颈对焊法兰 (1)Flange

    Welding Neck Flange

    Forged steel flanges — welding-neck, slip-on, socket-weld, threaded and blind — for high, medium and low pressure piping.

    Material / Standard
    ASTM A105 / A182 F11/F22/F304/F316/F347; A350 LF2; carbon, alloy, stainless
    Size range
    1/2" - 60" (DN15 - DN1500)
    View details
    Threaded Flange - 螺纹法兰 (1)Flange

    Threaded Flange

    Forged steel flanges — welding-neck, slip-on, socket-weld, threaded and blind — for high, medium and low pressure piping.

    Material / Standard
    ASTM A105 / A182 F11/F22/F304/F316; carbon, alloy, stainless steel
    Size range
    1/2" - 4" (DN15 - DN100)
    View details
    Threaded Flange - 螺纹法兰 (1)Flange

    Threaded Flange

    Forged steel flanges — welding-neck, slip-on, socket-weld, threaded and blind — for high, medium and low pressure piping.

    Material / Standard
    ASTM A105 / A182 F11/F22/F304/F316; carbon, alloy, stainless steel
    Size range
    1/2" - 4" (DN15 - DN100)
    View details
    Blind Flange - 盲板法兰&法兰盖 (1)Flange

    Blind Flange

    Forged steel flanges — welding-neck, slip-on, socket-weld, threaded and blind — for high, medium and low pressure piping.

    Material / Standard
    ASTM A105 / A182 F11/F22/F304/F316; carbon, alloy, stainless steel
    Size range
    1/2" - 60" (DN15 - DN1500)
    View details
    Blind Flange - 盲板法兰&法兰盖 (1)Flange

    Blind Flange

    Forged steel flanges — welding-neck, slip-on, socket-weld, threaded and blind — for high, medium and low pressure piping.

    Material / Standard
    ASTM A105 / A182 F11/F22/F304/F316; carbon, alloy, stainless steel
    Size range
    1/2" - 60" (DN15 - DN1500)
    View details
    Blind Flange - 盲板法兰&法兰盖 (1)Flange

    Blind Flange

    Forged steel flanges — welding-neck, slip-on, socket-weld, threaded and blind — for high, medium and low pressure piping.

    Material / Standard
    ASTM A105 / A182 F11/F22/F304/F316; carbon, alloy, stainless steel
    Size range
    1/2" - 60" (DN15 - DN1500)
    View details
    Forged Flange - 法兰 (1)Flange

    Forged Flange

    Forged steel flanges — welding-neck, slip-on, socket-weld, threaded and blind — for high, medium and low pressure piping.

    Material / Standard
    ASTM A105 / A182 / A350; carbon, alloy and stainless steel
    Size range
    1/2" - 60" (DN15 - DN1500)
    View details
    Welding Neck Flange - 带颈对焊法兰 (1)Flange

    Welding Neck Flange

    Forged steel flanges — welding-neck, slip-on, socket-weld, threaded and blind — for high, medium and low pressure piping.

    Material / Standard
    ASTM A105 / A182 F11/F22/F304/F316/F347; A350 LF2; carbon, alloy, stainless
    Size range
    1/2" - 60" (DN15 - DN1500)
    View details
    Welding Neck Flange - 带颈对焊法兰 (1)Flange

    Welding Neck Flange

    Forged steel flanges — welding-neck, slip-on, socket-weld, threaded and blind — for high, medium and low pressure piping.

    Material / Standard
    ASTM A105 / A182 F11/F22/F304/F316/F347; A350 LF2; carbon, alloy, stainless
    Size range
    1/2" - 60" (DN15 - DN1500)
    View details
    Slip-on Flange - 滑套法兰 (1)Flange

    Slip-on Flange

    Forged steel flanges — welding-neck, slip-on, socket-weld, threaded and blind — for high, medium and low pressure piping.

    Material / Standard
    ASTM A105 / A182 F304/F316; carbon, alloy, stainless steel
    Size range
    1/2" - 60" (DN15 - DN1500)
    View details