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  • Threaded flange

    Haokun is top china flange and forgings with 20+ years experience,ISO9001 certified factory. We have strong supply chain, more than 20000 Ton/Year. We supply all kinds of flange for piping design, fittings and valves, equipment and equipment parts (such as manholes, sight glass level gauges, etc.), industrial furnaces, thermal engineering, water supply and drainage, heating and ventilation, automatic control.

    1)Body material: Carbon Steel:ASTM A105, 20#, Q235, 16Mn, P355QH, 250GH, 280GH, 350LF2, etc.

    2)Alloy Steel: A182F11, 16MnR, C, 12Cr1MoV, 16Mo3, etc. Stainless Steel:304, 304L, 316L, 316, F51, etc.

    3)Standards: ANSI/ASME B16.1-16.5

    4)Pressure Rating: CLASS 150-2500

    5)Sealing  surface: RF, MFM, FF, TG, RTJ

    6)Size range: DN15---DN1500

    7)Connection: Long Welding Neck flange, Swivel Flange, Plate flange, Anchor flange, Blind flange, Threaded flange, Orifice flange, Slip-on flange, Tube Sheet, Welding Neck flange, Lap joint flange, Socket Welding flange, Spectacle blind

    Product Description

    Haokun's series of Threaded flange is a kind of non welding flange which processes the inner hole of ordinary flange into pipe thread and connects with threaded pipe.Used for special circumstances with their main advantage being that they can be attached to the pipe without welding. Sometimes a seal weld is also used in conjunction with the threaded connection. Although available in most sizes and pressure rating, threaded flanges today are used almost exclusively in smaller pipe sizes. Threaded flanges are not suitable for piping with thin wall thicknesses because cutting a thread on the pipe is not possible.

    Technical Specifications

    Body material:

    Carbon Steel:ASTM A105, 20#, Q235, 16Mn, P355QH, 250GH, 280GH, 350LF2, etc.

    Alloy Steel: A182F11, 16MnR,  C, 12Cr1MoV, 16Mo3, etc.

    Stainless Steel:304, 304L, 316L, 316, F51, etc.

    Size range:


    Pressure rating:

    PN2.5-PN400/0.25Mpa ~250Mpa(CLASS150 ~CLASS2500)

    Sealing surface:

    FF, RF, RJ

    Applicable medium:

    Water, steam≤1.0MPa, Oil&Gas

    Mode of operation:


    Applicable industry:

    The threaded flange is applicable to the connection of high-pressure pipelines in the Oil & Gas industries. However, under the condition that the pipeline temperature changes sharply or the temperature is higher than 260 ℃ and lower than - 45 ℃, it is recommended not to use a threaded flange to avoid leakage.

    Design & Manufacture:



    • Custom Forgings

      If the application requires a custom solution, Newman Flange’s forging capabilities can help solve the most challenging requirements.

    • Custom Machining

      Newman Flange can provide machining capabilities that can meet the most stringent dimensional specifications.

    • Expedited Service

      We understand that downtime is expensive and sometimes standard delivery is not an option. Inquire about our expedited options and we will help find a solution that meets your requirements.

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