Uru:
1. Ọ nwere ike ịbụ nnyefe nke ihe granular, a pụkwara iburu ya n'ime nnyefe nke ihe.
2. Kwesịrị ekwesị maka njem njupụta dị elu na obere.
3. Ntugharị dị nro, ike
4. Nrụnye dị mma na nnọchi, ọnụ ahịa dị elu, ogologo ndụ ọrụ.

Ngwa:
1. Igwe oyi kpọnwụrụ ngwa ngwa, igwe na-eme achịcha, ebu ụgbọ elu, ebufe ịghasa.
2. Nhicha, sterilization, ihicha, nri, oyi na ihe ndị ọzọ maka igwe nri.
3. Na-efunahụ karama annealing, ṅara n'ọkụ ifuru wdg maka iko igwe.
4. Onye ọ bụla ụdị ụgbọ njem pipeline.
5. Metal usoro: ntụ ntụ metallurgy, okpomọkụ ọgwụgwọ, hardening, sintering, brazing, rie nri, brightening, blacking, ibu, carburizing elu-okpomọkụ.
6. igwe ịsa akwa, igwe ikuku, igwe ihicha, wdg.