Slip-on Flange

At Arc Alloys Ltd we can offer you a wide range of sizes, specifications and materials for slip on flanges. Typically slip on flanges are provided with a flat or raised face and we can provide a swift turnaround on your requirements. If you need any advice about slip on flanges or need an urgent order of slip on flanges processing then please contact us now and speak to one of our specialist team.

Dimensional standards:

  • ANSI B16.5
  • 47 Series A and B16.47 Series B
  • API 6A
  • API 17D
  • BS EN 1092-1
  • BS 4504
  • BS 10
  • Din
  • JIS
  • Norsok L-005
  • Bespoke to customer drawings / design.

Standard grades:

Standard facings:

  • Raised face
  • Ring-type joint
  • Flat face
  • Male/female
  • Tongue/groove

Arc Alloys Ltd are leading suppliers and manufacturers of Slip On Flanges for a broad range of industries including the oil and gas industries, refrigeration industry, filtration industry, petrochemical industry, refining industry and the offshore industries.
Slip on flanges are commonly used and always in high demand by the above industries. Their primary use is for low pressure applications and they are available in a wide range of materials including stainless steel, brass, alloy steel, steel, titanium, aluminium, plastics, carbon steel and more.

They are made specifically to slide over the end of piping and then welded to secure into position. The diameter of the slip on flange has to be slightly wider than then outer diameter of the pipe for the flange to fit on correctly and their ease of fitting and welding makes them simple to use and one of the most popular flanges available. They also reduce fabrication costs for pipes which is an added bonus.

Features of Slip On Flanges

  • Extensively used for low pressure applications
  • One size fits all pipe schedules
  • Pipe can easily be cut to appropriate length for slip on flanges
  • Bolting holes are easy to align because of the relatively small thickness of the flange

Benefits of Slip On Flanges

  • They are easy to align
  • Relatively cheap to install
  • Saves time when cutting pipes to different lengths
  • Internal and external welding of the slip on flange provides great strength
  • They have low hub because the pipe is fitted into the flange before welding
  • They prevent leakage

How do you install a Slip On Flange?

Typically, a slip on flange is bored so that it slips neatly onto the pipe so that the end of the pipe is just inside the flange and very close to the flange face. The bolt holes of the flange are then aligned and the face of the flange is squared to the pipe. You then run a fillet weld around the end of the pipe to secure it to the inside bore of the flange. A second fillet weld is then run around the back of the flange hub securing it to the outside of the pipe.