1 Painted, coated & bare metals.
Coatings up to 20mm (3/4in)
thick
2
.
Corrosion: non to moderate.
Thickness: 3 to 250mm (1/8in
to 10in)
1
.
Class Shipping Surveys.
General purpose use.
√
2 Painted & bare metals.
Corrosion: non to moderate.
Thickness: 2 to 150mm (0.1in
to 6in)
1
.
√
3 Painted & bare metals.
Corrosion: non to light.
Thickness: 1 to 50mm (0.05in
to 2in)
1
.
√
4 Small diameter pipes.
Boiler tubes.
Corrosion: non to light.
Thickness: 1 to 25mm (0.05in
to 1in)
1
.
√
5 Uncoated or coated metals
3
.
Corrosion: very heavy, pitting.
Thickness: 2.0 to 100mm
(0.08in to 2in)
1
.
General purpose use.
√
6 Uncoated or coated metals
3
;
Cast Iron. Wrought Iron.
Plastics.
Corrosion: very heavy, pitting.
Thickness: 3.0 to 150mm
(0.12in to 6in)
1
.
√