The main difference between a weld neck (WN) flange and a slip-on (SO) flange lies in their design and functionality.Design:Weld Neck Flange (WN): The weld neck flange has a
long tapered hub that provides reinforcement and better structural integrity. It has a raised face on the flange’s outer diameter, which allows for a smooth transition to the pipe.
Slip-On Flange (SO): The slip-on flange has a flat face and is designed to slip over the pipe. It is not as strong as the weld neck flange, as it lacks the reinforced tapered hub.
Connection Method:Weld Neck Flange (WN): The WN flange is typically used in applications where high pressure and extreme temperatures are involved. It requires butt-welding
to the pipe, which provides a strong and leak-proof connection.Slip-On Flange (SO): The SO flange is popular in low-pressure applications. It requires fillet-welding on the inside
and outside of the flange to connect it to the pipe.Applications:Weld Neck Flange (WN): WN flanges are commonly used in industries such as oil and gas, chemical, and petrochemical,
where high-pressure and high-temperature conditions are present.Slip-On Flange (SO): SO flanges are frequently used in industries such as water treatment, plumbing, and HVAC,
where lower-pressure conditions and non-critical applications are involved.In summary, weld neck flanges are generally used for high-pressure and high-temperature applications,
while slip-on flanges are suitable for low-pressure and non-critical applications. The weld neck flange offers stronger connections and better structural integrity, but with more involved
welding requirements.
Post time: Nov-27-2023