Before welding, a gap must be formed in the socket weld flange between the flange or fit and the pipe. For this type of flange, the thickness of the connecting pipe should be defined to ensure proper bore length. Their static strength is equivalent to Slip On flanges, but their fatigue strength is 50 percent higher than double-welded Slip On flanges. These are mostly used for the small-bore lines. The Socket weld flanges are only connected on the outside by one fillet weld and are often not advised for critical services. Weld Neck Flange has been used successfully at pressures up to 5,000 psi. A weld neck flange comprises of a circular fitting with a protruding edge around the circumference. The long tapered hub provides significant shielding for use in multiple applications involving high pressure, sub-zero and/or high temperatures. Welding Neck Flanges are effortlessly identifiable at the long tapered end, which slowly passes through the wall thickness from a pipe or fitting. It is compatible with pipelines which operate at high or low temperatures and withstand high pressure. Weld neck flange (WN flange) has a neck that can move the pipe tension, thereby reducing the pressure gathered in the bottom of the flange. Weld Neck Flange is also known as a tapered hub flange or high-hub flange. Slip on flange is excessively utilized in many fluid pipelines. Slip-On Flanges are a suitable choice for low-pressure applications. Slip-on pipe flanges are used with a raised or flat face.
It is used to insert the pipe into the flange’s inner hole.
Since the inner dimension of the flange is slightly bigger than the external dimension of the pipe, the top and bottom of the flange can be connected directly to equipment or pipe by fillet welding the SO flange. It’s a kind of flange that are slightly bigger than the pipe and slides over the pipe, with an internal design. A slip-on flange is also known as an SO flange. As the name suggests these flanges slip over a pipe and are hence known as Slip On Flanges. Slip on Flange Is fundamentally a ring placed over the end of the pipe, with a flange face extending from the end of the pipe by a sufficient distance to apply a welded bead to the inner diameter. Our Updated Flange Catalogue Our Updated Flange Catalogue
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