Slip-on flanges Pressure Vessel Flange series

Pressure vessels are common in petrochemical, power, and light industries. Types include flat welding, long-neck butt-welding and forged tube sheets and baffle plates.

It is a type of flange where the steel pipe or fittings extend into the flange and are connected to equipment or pipelines through fillet welds.

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.

GB/T9119-2010 HG/T20592-2009 HG/T20615-2009 DIN ASME BS JIS

• 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

Slip-on flanges connect 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.

1. 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.
2. 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.
3. Space-Saving Design: Available without a hub in a ring style, the slip-on flange is an option for applications with limited space.
4. Material Variety: Offered in a wide range of materials, including 304, 304L, 316L stainless steels, and high-strength alloys like 2507 and 2205.
5. Standards Compliance: Manufactured to meet international standards (GB/T9119-2010, HG/T20592-2009, HG/T20615-2009, DIN, ASME, BS, JIS).