special welded and drilled pads.

[freelancer_06]

Adapters Reducing outlet tees should be used in lieu of specially designed adapters for branch piping 65 mm and larger whenever possible. Specially designed adapters may be used in lieu of reducing outlet tees when the main run wall thickness is less than or equal to 20 mm. Specially designed adapters must be post-weld heat treated as specified in ANSI B31.1. Specially de-signed adapters shall be Weldolets or Sweepolets as manufactured by Bonney Forge and Tool Works, or approved equal.
Branch connections 50 mm and smaller shall be made with special reinforced welding adapters, Bonney Forge and Tool Works Thredolets or Sockolets or approved equal, or shall be special welded and drilled pads.