1. Weld Joint GeometryWeld Joint Geometry
and Welding Symbolsand Welding Symbols
Types of weldsTypes of welds
Groove weldsGroove welds
Welding TechnologyWelding Technology

2. Types of WeldsTypes of Welds
 Numerous welds can be applied to theNumerous welds can be applied to the
various types of jointsvarious types of joints
 Considerations when choosing jointConsiderations when choosing joint
geometry and weld types:geometry and weld types:
 accessibility to the joint foraccessibility to the joint for
weldingwelding
 type of welding process beingtype of welding process being
usedused
 suitability to the structural designsuitability to the structural design
 cost of weldingcost of welding

3. Types of WeldsTypes of Welds
 There are nine categories of weldsThere are nine categories of welds
associated with weld symbolsassociated with weld symbols
 Groove weldsGroove welds
 Fillet WeldsFillet Welds
 Plug or Slot weldsPlug or Slot welds
 Stud weldsStud welds
 Spot or projection weldsSpot or projection welds
 Seam weldsSeam welds
 Back Or Backing weldsBack Or Backing welds
 Surfacing weldsSurfacing welds
 Flange WeldsFlange Welds

4. Types of Groove WeldsTypes of Groove Welds
 A groove weld is “ a weld made in a groove betweenA groove weld is “ a weld made in a groove between
the work pieces”the work pieces”
 There are eight types of groove weldsThere are eight types of groove welds
 Square-grooveSquare-groove
 ScarfScarf
 V-grooveV-groove
 Bevel-grooveBevel-groove
 U-grooveU-groove
 J-grooveJ-groove
 Flare-v-grooveFlare-v-groove
 Flare-bevel-grooveFlare-bevel-groove

5. Groove WeldsGroove Welds
Square and double square-Square and double square-
groove weldsgroove welds
 Square-groove welds are the most economicalSquare-groove welds are the most economical
to use, but are limited by thickness of theto use, but are limited by thickness of the
membersmembers
 Welds for one side are normally limited to a 1/4Welds for one side are normally limited to a 1/4
inch or lessinch or less

6. Groove WeldsGroove Welds
V-and double V-groove weldsV-and double V-groove welds
•With thicker materials joint accessibility
must be provided for welding to ensure weld
soundness and strength

7. Groove WeldsGroove Welds
Bevel- and double-bevel-Bevel- and double-bevel-
groove weldsgroove welds
 Bevel- and J- groove welds are moreBevel- and J- groove welds are more
difficult to weld than V- or U- groove weldsdifficult to weld than V- or U- groove welds
 Bevel welds are easier in horizontalBevel welds are easier in horizontal

8. Types of WeldsTypes of Welds
U-groove and Double U-grooveU-groove and Double U-groove
 Welds in using J- and U-Welds in using J- and U-
grooves can be used togrooves can be used to
minimize weld metalminimize weld metal
 These welds are veryThese welds are very
useful in thicker sectionsuseful in thicker sections

9. Groove WeldsGroove Welds
J-and double-J-groove weldsJ-and double-J-groove welds
 J-groove are moreJ-groove are more
difficult to welddifficult to weld
because of the onebecause of the one
vertical side (exceptvertical side (except
in horizontal)in horizontal)
 J-and U- are usedJ-and U- are used
when economicwhen economic
factors outweigh thefactors outweigh the
cost of edgecost of edge
preparationpreparation

10. Groove WeldsGroove Welds
flare-bevel and flare-v-grooveflare-bevel and flare-v-groove
weldswelds
 Flare -bevel andFlare -bevel and
flare-v-groove weldsflare-v-groove welds
are used inare used in
connection withconnection with
flanged or roundedflanged or rounded
membermember

11. Groove WeldsGroove Welds
ScarfScarf
 Scarf is used forScarf is used for
brazingbrazing

12. Groove WeldsGroove Welds
 Their names imply what the actualTheir names imply what the actual
configurations look like when viewed in aconfigurations look like when viewed in a
cross sectioncross section
 Single groove welds are welded from onlySingle groove welds are welded from only
one sideone side
 Double groove welds are welded on bothDouble groove welds are welded on both
sidessides
 Groove welds in many combinations areGroove welds in many combinations are
used selection is influenced by accessibility,used selection is influenced by accessibility,
economy, adaptation to structural designeconomy, adaptation to structural design

13. THANKTHANK
YOUYOU