The slip on flange has a low hub and slips onto the pipe prior to welding.  Welding is carried out on the inside and outside to provide sufficient strength and prevent leakage.  Slip on flanges are all bored slightly larger than the OD of the matching pipe to allow for the welds to hold.  They are many times preferred over weldnecks due to their lower cost, though net installation cost is often the same due to the additional welding.

Our slip-on flanges are available with raised, flat, or RTJ faces, and are also available in orifice configurations.

These flanges are available in all of our stainless steel and chrome-moly grades, from ½” to 36” and beyond, class 150 to 2500.  We also stock large diameter LDS Slip-On flanges in A105N, and can supply all sizes of LDS Slip-Ons and AWWA C207 Slip-Ons – with or without a hub – with longer lead times. We can also source many of your other specification requirements.