Reliable Quality & Affordable Socket Weld Flange Supplier

We are the largest manufacturer, supplier and exporter of Ring Socket-Weld Flanges. Yanhao Socket Weld Flanges are designed in accordance with industry standards (ISO 2861/1 and ANSI B16.5) and are manufactured from quality material. These ANSI B16.5 SW Flanges meet the requirements of various industries such as automotive, heavy engineering, railways, and pipeline engineering. Available in standard specifications, our range of flanges can also be customized according to our clients’ requirements. As China leading Socket-Weld Flange Supply online, we strive to help you complete your projects as efficiently as possible with the highest quality products.

Socket Weld flanges’ widest range of application lies in pipes of small dimensions that conduct fluids at high pressures. ANSI B16.5 Socket Weld flange recommend its use in tubes up to 3 “in diameter in series 150, 300, 600, and up to 2 ½” in series 1500. In these SW flanges the tube penetrates into the hub until it makes contact with the seat – Which has the same internal diameter as the tube- thus leaving a smooth duct without cavities. These flanges are frequently used in pipes intended for chemical processes, due to their particular characteristic of granting the duct a constant section.

  • SW Flange Advantages: Corrosion resistance, cryogenic strength, abrasion and erosion resistance, surface finish, magnetic properties, ductility, high temperature resistance, stability of in-service properties, suitability for planned manufacturing techniques
  • Our Services Benefits: Competitive prices, outstanding quality, superior product knowledge, strict quality inspection, hassle-free online ordering, on-time delivery and one-stop service. Our socket welding flanges are available in standard specifications, our range of flanges can also be customized according to our clients’ requirements.

Wholesale Top Quality Socket Welding Flanges At Competitive Price From Yanhao

As the top SW Flange supply online, we strive to help you complete your projects as efficiently as possible with the highest quality products. Find wholesale Socket Welding Flange supplies online with our discounted bulk SW pipe flange fittings ordering options and make your projects more budget-friendly. Our Socket Weld Flange linings are standardized in both large and small types. We can provide Ring Weld Flange Pipe Flanges in all carbon steel, alloy steel and stainless steel materials in all sizes and dimensions.

What Is Socket Weld Flange?

Socket Weld Pipe Flanges are the flanges with seat to weld are those in which the tube is inserted until it makes contact with the seat that has the same internal diameter as the tube, thus leaving a smooth conduit without cavities. The fixing of the flange to the tube is done by practicing a weld bead around the hub.

WS Flange is designed for small diameter and high pressure applications provided that an internal and external double weld is made. It is similar to the weld-on flange when it comes to manufacturing, but has better fatigue resistance when installed with an internal weld. Unlike the press-in flange, abrasion of the internal weld to obtain a smooth appearance can be carried out without affecting the face of the flange, and therefore does not require subsequent surfacing. If only external welding is carried out, this flange must be reserved for low pressure applications. It is not authorized beyond Class 1500 by standard B16.5.

  • Socket Welded Flange Face Types

    SW Flange: DN15-DN80
    Outer Diameters: 1/2 inch to 48 inch, up to 1500#
    Surface Treatment: Anti-rust Oil, Transparent/Yellow/Black Anti-rust Paint,Zinc,Hot dipped Galvanized.

  • Socket Weld Flange Application

    Chemical, Engineering, Petrochemical, Construction, Oil Field, Offshore, Water System, Shipbuilding, Natural Gas, Electric Power, Fertilizer, Food Processing, Pulp and Paper, Manufacturing Industry, Pipe Projects etc.

  • Socket Weld Flange Materials

    Carbon Steel Flange: ASTM A105, 20#, Q235, 16Mn, ASTM A350 LF1, LF2 CL1/CL2, LF3 CL1/CL2, ASTM A694 F42, F46, F48, F50, F52, F56, F60, F65 ,F70;
    Stainless Steel Flange: ASTM A182 F304, 304L, F316, 316L, 1Cr18Ni9Ti, 0Cr18Ni9Ti, 321, 18-8;
    Alloy Steel Flange: ASTM A182 F1, F5a, F9, F11, F12, F22, F91, A182F12, A182F11, 16MnR, Cr5Mo, 12Cr1MoV, 15CrMo, 12Cr2Mo1, A335P22, St45.8/Ⅲ;

  • Socket Welded Flange Face Types

    RF (Raised Face)
    M&F (Male-and-Female Face)
    RTJ (Ring-Type Joint)
    T&G (Tongue and Groove Face)

  • SW Flange Standards

    ANSI B16.5
    HG20619-1997
    GB/T9117.1-2000—GB/T9117.4-200
    HG20597-1997

  • Socket Weld Flange Pressure Grade

    PN≤26.0MPa

  • ANSI B16.5 Class 150 Flanges

    ANSI flanges are available at Yanhao Flange in class 150.  The ANSI flanges in the class 150 specification cover slip-ons, weld necks, lap joints, blinds, threaded and socket weld flanges.  ANSI flanges for class 150 are provided by Yanhao Flange as forgings unless otherwise specified.

  • ANSI B16.5 Class 300 Flanges

    ANSI flanges are available at Yanhao Flange in class 300.  The ANSI flanges in the class 300 specification cover slip-ons, weld necks, lap joints, blinds, threaded and socket weld flanges.  ANSI flanges for class 300 are provided by Yanhao Flange as forgings unless otherwise specified.

  • ANSI B16.5 Class 400 Flanges

    ANSI flanges are available at Yanhao Flange in class 400.  The ANSI flanges in the class 400 specification cover slip-ons, weld necks, lap joints, blinds, threaded and socket weld flanges.  ANSI flanges for class 400 are provided by Yanhao Flange as forgings unless otherwise specified.

  • ANSI B16.5 Class 600 Flanges

    ANSI flanges are available at Yanhao Flange in class 600.  The ANSI flanges in the class 600 specification cover slip-ons, weld necks, lap joints, blinds, threaded and socket weld flanges.  ANSI flanges for class 600 are provided by Yanhao Flange as forgings unless otherwise specified.

  • ANSI B16.5 Class 900 Flanges

    ANSI flanges are available at Yanhao Flange in class 900.  The ANSI flanges in the class 900 specification cover slip-ons, weld necks, lap joints, blinds, threaded and socket weld flanges.  ANSI flanges for class 900 are provided by Yanhao Flange as forgings unless otherwise specified.

  • ANSI B16.5 Class 1500 Flanges

    ANSI flanges are available at Yanhao Flange in class 1500.  The ANSI flanges in the class 1500 specification cover slip-ons, weld necks, lap joints, blinds, threaded and socket weld flanges.  ANSI flanges for class 1500 are provided by Yanhao Flange as forgings unless otherwise specified.

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