| A03 | Engineering services |
| B01 | Structural work and surface treatment (plate, welder, paint) |
| D01 | Steel |
| D02 | Stainless steel |
| D03 | Aluminium |
| D04 | GRP/FRP |
| D05 | Anti-corrosion |
| D06 | Coatings & paint |
| D07 | Insulation |
| D08 | Additives & agents |
| D10 | Other materials |
| D11 | Lubricants |
| D12 | Plastic |
| E01 | Hatches, covers, ports, ramps & platforms |
| E08 | Ladders, railings, stairs, ramps & gangways |
| E09 | Watertight/weathertight doors & windows |
| E10 | Gratings & drains |