7.5 Inclusions
Each size of inclusions shall not exceed 20% of the thickness of a thinner sheet or plate and 1.0mm maximum. Their number shall not exceed 4 in a bead length of 25mm.
7.6 Craters
A crater (a recess developed at a weld end) shall not exceed 20% of the thickness of a thinner sheet or plate. A crater in important portions shall not exceed the thickness
of a thinner sheet or plate.
7.7 Cracks
A weld shall be free from cracks that can be observed visually, by magnetic particle inspection, by color checking, etc. Provided that cranks not exceeding 10mm in length and 10mm in depth may be repaired.