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Groove Weld Spec Table
Groove Weld KS Specifications — 4 sizes
KS B ISO 2553
Groove weld symbols for butt joints with beveled edges (V, U, J, etc.).
Practical Notes
- For full-penetration strength members. Requires groove preparation (V, U, J, etc.) — costlier than fillet welds.
KSGroove Weld
4 sizes| Name | Type | Symbol | Description | Dimension | Note |
|---|---|---|---|---|---|
| Butt Weld | Groove Weld | ㅡ(IType) | IType Groove, | 1~3mm | |
| VType Groove | Groove Weld | V | VType Groove, GrooveAngle 60° | Groove Depth, Angle | 6mm or more |
| XType Groove | Groove Weld | X | Double VType, Thick Plate | Groove Depth, Angle | 12mm or more |
| UType Groove | Groove Weld | U | UType Groove, Thick Plate | Radius, Depth | 20mm or more |
Key Features
- I, V, U, J, and X groove joint types distinguished by weld cross-section symbols
- AWS A2.4 / ISO 2553 symbol system; groove angle, root gap, and root face specified
- Complete Joint Penetration (CJP) or Partial (PJP) designated; directly linked to structural strength calculation
Key Applications
Pressure vessel longitudinal/circumferential seams, bridge girder butt joints, building column-beam connections, ship hull plates, pipe circumferential welds
FAQ
Difference between V-groove and U-groove?
V-groove is simpler but requires more weld metal. U-groove costs more to prepare but uses less weld metal with less distortion. U-groove is advantageous for thick plates (25mm+).