(informative) Recommended weld preparation design dimensions Dimensions in millimetres (inches) unless otherwise indicated a) V-groove b) U-groove c) Heavy-wall V-groove Maximum misalignment. a Figure F. Pipe butt welds — Dimensions in millimetres (inches) unless otherwise indicated Maximum misalignment (unless removed by machining). a Remove to sound metal by machining. b Maximum misalignment. c Backing shall be removed. Material shall be compatible with base material. d Figure F. Attachment welds — Dimensions in millimetres (inches) unless otherwise indicated Ratio of to shall not exceed 1,5:1. a d1 D2 Depth required to maintain a maximum of 1,5:1 depth, to diameter, ratio. b d1, D2, a) Hole repair Key 1 side 2 end Original area. a b) Excavation for repair (removal of sample discontinuities in weld metal and base metal) Figure F. Repairs — Dimensions in millimetres (inches) a) Bushing/seat cavity (W) b) Ring groove (X)
(informative) Recommended weld preparation design dimensions Dimensions in millimetres (inches) unless otherwise indicated a) V-groove b) U-groove c) Heavy-wall V-groove a Maximum misalignment. Figure F. — Pipe butt welds Dimensions in millimetres (inches) unless otherwise indicated a Maximum misalignment (unless removed by machining). b Remove to sound metal by machining. c Maximum misalignment. d Backing shall be removed. Material shall be compatible with base material. Figure F. — Attachment welds Dimensions in millimetres (inches) unless otherwise indicated a Ratio of d1 to D2 shall not exceed 1,5:1. b Depth required to maintain a maximum of 1,5:1 depth, d1, to diameter, D2, ratio. a) Hole repair Key 1 side 2 end a Original area. b) Excavation for repair (removal of sample discontinuities in weld metal and base metal) Figure F. — Repairs Dimensions in millimetres (inches) a) Bushing/seat cavity (W) b) Ring groove (X)
API-16AR%20Drill%20Through%20Equipmenr%20Repair%20and%20Remanufacturing%20V12%2010-Mar-2014.docx