Minimum effective throat thickness of a partial-penetration groove welds.

Table: Minimum effective throat thickness of a partial-penetration groove welds.

Material Thickness of Thicker part joined, mm	Minimum Effective Throat Thickness, mm
To 6 Inclusive	3
Over 6 to 12	5
Over 12 to 20	6
Over 20 to 40	8
Over 40 to 60	10
Over 60 to 150	12
Over 150	16