ASME B 16.11 standard SW 45 degree forged elbow

Branch Connection fittings (also known as O'lets) are fittings which provide an outlet from a larger pipe to a smaller one (or one of the same size). The main pipe onto which the branch connection is welded is usually called the Run or Header size. The pipe to which the branch connection provides a channel is usually called the Branch or Outlet size. Branch connections are in all sizes, types, bores, and classes, in a wide range of stainless steel, chrome-moly, and other alloys.

Perhaps you know, Bonney Forge has been supplying quality branch fittings (O'lets) for many years. In 1943 when Bonney Forge pioneered the "Shape of Reinforcement" for branch connections, who would have thought it would fast become a recognized industry standard. Today, Bonney Forge Branch Connections offer complete run pipe reinforcement while avoiding cracks, fillet welds, and sharp re-entrant corner reinforcement tapering at the sides, thus preventing abrupt changes in thickness where the fitting joins the header pipe.

Bonney Forge fittings meeting the 100% reinforcement requirement of applicable piping codes i.e. ASME B31.1, B31.3, B31.4 and B31.8. They also meet the 2001 edition of MSS-SP-97 Standard- "Integrally Reinforced Forged Branch Outlet Fittings".

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