Slip-On Flanges

INTRO

The Slip-On Flange is designed to accommodate lower pressure and temperature applications, featuring a central bore that matches the outside diameter of the pipe. This allows for easy pipe insertion and secure fillet welding on both the interior and exterior sides.

The absence of a weld bevel offers flexibility in adjusting pipe length relative to the flange's position.

Available in large sizes, Slip-On Flanges are ideal for connecting big-bore piping to storage tank nozzles. Typically forged with a hub, they can also be fabricated without one in a ring style for applications with limited space.

Standard：
GB/T9119-2010 HG/T20592-2009 HG/T20615-2009 DIN ASME BS JIS
Material：
304：F304 S30408 S30408II S30408III S30400
304L：S30403 S30403II 30403 30403II
316L：31603 31603II 31603III
2507（F53） 2205（F51） TP310S（06Cr5Ni20） TP321（06Cr18Ni11） S22053III=2205III T321-32168=321

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DESCRIPTION DOWNLOAD

Slip-on flanges, connects pipes and fittings to equipment through fillet welds. Its low neck height increases stiffness and load capacity. Unlike butt-weld flanges, it requires more welding and rods and can’t handle high temperature, pressure, repeated bending, or temperature changes. However, it is popular for its easy on-site installation, which skips weld bead grinding.For more information, please see the download section on the right.

Why Choose Our Slip-On Flange?

Ease of Installation: Our slip-on design allows for straightforward pipe insertion and secure fillet welding on both the interior and exterior, making it a practical choice for on-site installations.
Versatile Application: Ideal for lower pressure and temperature applications, the slip-on flange is particularly well-suited for connecting large-bore piping to storage tank nozzles, offering flexibility in various industrial settings.
Space-Saving Design: Available without a hub in a ring style, the slip-on flange is an option for applications with limited space.
Material Variety: Offered in a wide range of materials, including 304, 304L, 316L stainless steels, and high-strength alloys like 2507 and 2205.
Standards Compliance: Manufactured to meet international standards (GB/T9119-2010, HG/T20592-2009, HG/T20615-2009, DIN, ASME, BS, JIS).

Frequently Asked Questions (FAQs)

In what applications are slip-on flanges typically used?

Slip-on flanges are commonly used in water treatment, HVAC systems, and industrial piping where moderate pressure and easy assembly are required.

What are the limitations of slip-on flanges?

Slip-on flanges have lower strength compared to other types, are unsuitable for high-pressure applications, and typically require two welds, increasing labor costs.

What are the advantages of slip-on flanges?

Slip-on flanges offer easy installation, cost-effectiveness, and flexibility for alignment, making them ideal for low-pressure applications in various industries.

How do slip-on flanges compare to weld neck flanges?

Slip-on flanges are easier to align during installation and generally less expensive than weld neck flanges, but they have lower mechanical strength and are not suitable for high-stress applications

What standards govern the use of slip-on flanges?

The installation and testing of slip-on flanges are governed by standards such as ASME B16.5 and ASME B31.3, which specify requirements for dimensions, materials, and pressure ratings