BS EN 1708-1:1999

Foreword
1 Scope
2 Normative references
3 Requirements
  3.1 Selection of detail
  3.2 Joint preparation (geometry and size)
  3.3 Presentation
  3.4 Removal of internal sharp edges in branch bores
  3.5 Preparation of holes in shell for set-in and
      set-through branches
  3.6 Welds for smooth transition
  3.7 Oblique and tangential branches
Annex ZA (informative) Text deleted
Tables

Illustrates commonly accepted welded connections in pressure systems. It does not promote the standardization of connections that may be regarded as mandatory or restrict development in any way. Stress analysis rules are to be considered if necessary.