Ọkụ mkpọtụ maka ladle

Skateboard dabere na akụrụngwa alumina dị ka tabular corundum, fused corundum, mullite, super alumina, wdg dị ka isi akụrụngwa, na -ewebata ihe carbon dị ka phosphorus flake graphite, carbon black, pitch, carbon activated, wdg, na na-agbakwunye ntakịrị ihe ndị ọzọ dị ka silicon metal, aluminom ọla, carbide silicon, carbide boron, wdg, na-eji resin phenolic dị ka onye nnọchi anya, site na ịcha, ịgwakọta, ịkpụzi nrụgide dị elu, ọgwụgwọ oke okpomọkụ, wee mezie . Ngwaahịa a nwere ezigbo ike, nkwụsi ike na -ekpo ọkụ dị mma, nguzogide corrosion na nguzogide nzere, ma nwee ike mezuo ihe achọrọ maka akara nchara dị iche iche.