Slip-On Flanges

The Slip-on has a low hub because the pipe slips into the prior to welding.

It is welded both inside and out to provide suffcient strength and prevent leakage.Slip-on are all bored slightly larger than the O.D. of the pipe. They are preferred over welding neck bu many users due to their lower intial cost, but final intallation cost is probably not much less than that of the welding neck flange because of the additional welding involved.

Advantages of slip on flanges:
Low cost installation
They are somewhat easier to align
The have low hub because the pipe slips into the flange before welding
The flange is welded both inside and outside to provide sufficient strength
They prevent leakage

Standards, Dimensions & Weight
Specifications of Slip-on flange:


Size: 1/2” to 60”, DN 12mm to DN 1500mm .
Facing: RF / RTJ

Material of Slip-on flange:

Cabon steel: A105, A350 LF2
Alloy steel: F11, F12
Packing: plywood case and plywood pallet