Amnitec has for the use of flue or exhaust systems in ships and engine rooms with a higher demand of temperature, small vibrations and lower pressure two types available from stock.
- US1F, flanged (Van Stone collar)
- US1S, welding ends
- US1S-185, welding ends and a NL of 185mm
- US1S-272, welding ends and a NL of 272mm