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+86 13313073735
[email protected]
Mengcun Hui Autonomous County, Cangzhou City, Hebei Province

China Top Slip On Flange Manufacturer & Supplier

Slip-on flanges are flanges with raised seal face, which are slid and welded directly on the end of the pipe. Yanhao Flange Factory is an outstanding manufacturer specializing in providing a comprehensive range of Slip On Flanges for various industries from China. Choose from our selection of SO Flanges, including a wide range of industry standard dimensions and specifications. Excellent physical performance, good welding and sealing property guarantee us to be your best slid on flange supplier.

  • Our steel slip on flange products are all in excellent quality with competitive price, professional production equipment, production team, sales and QC departments.
  • Our qualified SO forged flanges have excellent performance leak-proof, can be applied in a extreme environment like corrosive, high temperature and vibratory, and very easy to install and disassemble.
  • We built long term relationship with our customers and from design to production, transportation, supply our customers a full and comprehensive service and let customer without any concerns.
  • OEM/ODM service accepted, standard or no-standard steel slip on flanges in various specifications and standard materials can be manufactured according to customers’ requirements.

Top Quality Standard or No-Standard Slip-On Flanges Supply

We offer many references of Slip-on flanges made of stainless steel, carbon steel and alloy steel. Our steel slip-on flanges are recommended for installations subject to medium pressures. We manufacture Slip On Flanges for over 20 years, do not hesitate to contact us for more information.

What is Slip-On Flange?

Slip-on Flange referred to as SO flange, belongs to one of the flat welded flange series. Slip-on Flange is the same as the flat welding flange, are fixed by two welding fillets, both inside and outside the flange. Slip-on flanges slide over the end of a tube and then weld in place. These flanges work well for low pressure applications.

The weld-on flange slides over the top of the end of the pipe, then is welded to it. The inside and outside of the flange are both welded, to provide sufficient resistance, without leakage. It may be preferred to the flange flange for its lower price, the greater tolerance in the length of the tube to be cut, and the greater facility for aligning the assembly. Its resistance to internal pressure and its resistance to fatigue is lower than for a flange with welded flange. This is why its use is limited to small diameters for the highest pressures. It is perfect for low pressure applications.

  • Our Supply Range of Slip-On Flanges
    • ANSI B16.5 Class 150 Slip-On Flanges
    • ANSI B16.5 Class 300 Slip-On Flanges
    • ANSI B16.5 Class 400 Slip-On Flanges
    • ANSI B16.5 Class 600 Slip-On Flanges
    • ANSI B16.5 Class 900 Slip-On Flanges
    • ANSI B16.5 Class 1500 Slip-On Flanges
    • ANSI B16.5 Class 2500 Slip-On Flanges
  • Slip-On 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;

  • Sealing Surface Types For Slip-On Flanges

    RF (Raised Face);
    FF (Flat Face);
    MFM (Male-and-Female Face);
    F (Female Face);
    M (Male Face);
    TG (Tongue and Groove Face);
    Among them, the uneven surface (MFM) is a matching use;

  • Slip-On Flange Standard

    National standard of the People’s Republic of China: GB/T 9116-2010 Steel Slip-On Flange;
    Chemical industry standards of the People’s Republic of China: PN series (European system) in HG/T20592~20635-2009, Class series (American system) in HG/T20592~20635-2009;

  • Specification of Slip-On Flanges

    DN15-DN2000

  • Slip-On Flange Pressure Grade

    PN series: PN2.5Mpa~PN40Mpa;
    Class series: Class150~Class1500;

  • Surface Treatment

    Anti-rust Oil, Transparent/Yellow/Black Anti-rust Paint,Zinc,Hot dipped Galvanized.

  • Application

    Oil Field, Offshore, Water System, Shipbuilding, Natural Gas, Electric Power, Pipe Projects etc.

  • 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.

  • ANSI B16.5 Class 2500 Flanges

    ANSI flanges are available at Yanhao Flange in class 2500.  The ANSI flanges in the class 2500 specification cover slip-ons, weld necks, lap joints, blinds, threaded and socket weld flanges.  ANSI flanges for class 2500 are provided by Yanhao Flange as forgings unless otherwise specified.

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