Heat-insulating agent for molten metal
High chromium iron production
High dimensional cored wires containing oxygen removers and...
High machinability steels fabrication process
High quality cast iron
High-strength steel for valve springs, process for producing...
Homogeneous-germination inoculation of cast iron and steel
Horizontal converter
Horizontally and vertically movable elevated apparatus for...
Hot metal desulphurizing and dephosphorizing process