Kayan karfen kumfa yana da manyan sigogi guda biyar:

1. Metal substrate, wato, abin da karfe kayan da porous karfe kumfa abu da aka yi da, ciki har da kumfa nickel, jan karfe, baƙin ƙarfe, baƙin ƙarfe-nickel gami, jan-nickel gami, da kuma surface zafi jiyya na daban-daban kayan kamar chromizing Jira.

2. PPI, Sinanci shine adadin pores a kowace inch. Wannan siga shine siga na musamman na kayan soso na kumfa. Yana bayyana adadin sel soso waɗanda ke wucewa ta madaidaiciyar layi a kowane inch na tsayi. Ganewar fahimta shine cewa mafi girman ƙimar PPI, mafi yawan bayyane saman kayan. Karamin rami shine, galibi muna samar da kayan tsakanin 10PPI da 140PPI. Saboda ƙayyadadden ƙwayar soso, ma'auni na PPI yana ƙaruwa da 10. Misali, muna samar da kayan aiki tare da sigogi na PPI kamar 10, 20, 30, 40, da dai sauransu, amma kada ku samar da PPI don 23, 38 da sauran kayan.

3. Kauri, kayan da aka bayar a halin yanzu duk kayan takarda ne, kewayon kauri shine 0.7mm-25mm.

4. Area, matsakaicin yanki na talakawa guda-yanki abu a halin yanzu bayar da shi ne 500X500mm.

5. Dinsity, density ya kasu kashi-kashi mai yawa da girman yanki. Girman girma shine nauyin kayan aiki a cikin ƙayyadaddun ƙayyadaddun ƙayyadaddun, kamar 1000g / m3, kuma girman yanki shine nauyin samfurin tare da ƙayyadaddun yanki a ƙarƙashin ƙayyadaddun kauri, kamar 10mm kauri. 1600 g / murabba'in mita; yawa yana ƙayyade ƙarfin kayan.

Idan kana buƙatar siyan samfuran ƙarfe na kumfa, dole ne ka fara ƙayyade sigogi biyar na sama, don ƙayyade ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun kumfa.