Boilers; steam or other vapour generating (other than central heating hot water boilers, capable also of producing low pressure steam), super heated water boilers

Boilers; watertube boilers with a steam production exceeding 45t per hour

Boilers; watertube boilers with a steam production not exceeding 45t per hour

Boilers; vapour generating boilers, including hybrid boilers n.e.c. in heading no. 8402

Boilers; super-heated water boilers

Boilers; parts of steam or other vapour generating boilers