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What are advantages of butt welding over flanges

What are advantages of butt welding over flanges

1.Flanges connect pipes by bolting them together, whereas butt weld fittings connect pipes by welding them together.

2.Depending on size, butt weld fittings require 10% to 75% less material than a flanged connection, which means lower material cost and lower weight.

3.Welded construction permits greater freedom in designing a layout; this system uses less space, is more compact, and has greater strength.

4.Butt weld fittings provide optimum flow characteristics, without pockets or sharp corners, creating less frictional resistance, no pressure loss, less turbulence, …

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