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    BS4504 PN16 Flange

    Size Range: 1/2~48"(DN15~DN1200)


    Materials: Q235,20#,16Mn, 304,304L,316,316L

    structural style:PL,SO,WM,BL

    Flange standard:BS4504

    TAG: , ,


    Tel: +86-13849184495
    Fax: +86-371-55883235
    E-mail: weisidun@wsdvalve.com
    Address: ZhengZhou,HeNan,China.

    What is a BS4504 PN16 Flange?

    Neck flat welded flange, like plate flat welded flange, is also a flange that extends steel pipe, pipe fittings, etc. into the flange and connects with equipment or pipe through fillet weld. The sealing surface forms of the neck flat welded flange are: convex surface (RF), concave surface (FM), convex surface (M), tenon surface (T), groove surface (G), full plane (FF). Diameter range of neck flat welded flange: DN10~DN600.

    Advantages of the BS4504 PN16 Flange:
    1.Small size
    By reducing the diameter of the seal to reduce the size of the compact flange, thereby reducing the section of the seal surface.
    2.Light weight
    Neck flat welded flange with sealing ring instead of flange gasket to ensure that the sealing surface matches the cover. In this way, the sealing surface can be compressed with only a small amount of pressure. With the reduction of the required pressure, the size and quantity of the bolt also decreased accordingly, thereby achieving the purpose of decreased weight and facilitated transportation.
    3.Convenient to use
    When connecting the flange bolt hole is not convenient alignment, avoid replacing the equipment flange bolt hole. This flat welded flange is very applicable.
    4.Wide range of application
    Neck flat welded flange mainly used for gas valves and natural gas pipelines, due to the short neck can improve the rigidity and load capacity of the flange, flat welded flange can use for general media. The neck flat welded flange is suitable for flammable, explosive, corrosion, toxic places.

    WESDOM  advantages

    1. WESDOM patent products, patent certification
    The product side flanges comply with national, German, Russian, American, British and Japanese standards and other domestic and international standards for multiple pressures, easy connection and wide adaptability, which can reduce the type of purchase and stock.

    2. The product has an independent identity to ensure traceability
    Each wesdom product has its own unique identification number, to ensure product traceability.

    3. Provide material inspection report
    All wesdom products can provide the material inspection report of the main parts.

    4. One-stop service
    One-stop service, we not only supply high quality products, also supply solutions and after-sales service.

    5. WESDOM has a lot of project experience
    We have a lot of project experience in countries such as Pakistan and the Philippines, WESDOM has always been noticed all over the world, and trust comes from quality.

    Quality control proces

    quality control process quality control process quality control process


    flange parameter


    weld neck flange, slip on flange, blind flange, tube sheet, threaded flange, socket weld flange, plate flange, spectacle blind, LWN, Orifice flange, anchor flange etc.




    150#-2500#,PN0.6-PN400,5K-40K,API 2000-15000


    ANSI B16.5,EN1092-1, SABA1123, JIS B2220, DIN, GOST,UNI,AS2129, API 6A, etc.

    Wall thickness

    SCH5S, SCH10S, SCH10, SCH40S,STD, XS, XXS, SCH20,SCH30,SCH40, SCH60,
    SCH80, SCH160, XXS and etc.


    Stainless steel: A182F304/304L, A182 F316/316L, A182F321, A182F310S,
    A182F347H,A182F316Ti, A403 WP317, 904L, 1.4301,1.4307,1.4401,1.4571,1.4541,
    254Mo and etc.
    Carbon steel: S235J ,S275J, St37,P235GH, P240GH, P265GH, P280GH, A105, A350LF2, Q235, St37, St45.8, A42CP, E24 , A515 Gr60, A515 Gr 70 etc.

    Duplex stainless steel: UNS31803, SAF2205, UNS32205, UNS31500, UNS32750 ,
    UNS32760, 1.4462,1.4410,1.4501 and etc.
    Pipeline steel: A694 F42, A694F52, A694 F60, A694 F65, A694 F70, A694 F80 etc.

    Nickel alloy: inconel600, inconel625, inconel690, incoloy800, incoloy 825, incoloy 800H,
    C22, C-276, Monel400, Alloy20 etc.
    Cr-Mo alloy: A182F11, A182F5, A182F22, A182F91, A182F9, 16mo3 etc.


    Petrochemical industry;avation and aerospace industry;pharmaceutical industry;
    gas exhaust;power plant;ship builiding;water treatment,etc.


    ready stock,faster delivery time;available in all sizes,customized;high quality


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