1. Forging: Hanya ce ta sarrafawa da ke amfani da injunan ƙirƙira don sanya matsi a kan guraben ƙarfe don samar da nakasar filastik don samun juzu'i tare da wasu kayan aikin injiniya, wasu siffofi da girma.
2. Daya daga cikin manyan sassa biyu na ƙirƙira.Ta hanyar ƙirƙira, za a iya kawar da sassautawar ƙarfe da ramukan walda, kuma ingantattun kayan aikin ƙirƙira sun fi na simintin gyare-gyare na abu ɗaya.Don mahimman sassa na injuna tare da babban nauyi da yanayin aiki mai tsanani, ana amfani da ƙirƙira mafi yawa sai dai mafi sauƙi siffofi waɗanda za a iya mirgina, bayanan martaba ko sassa na walda.
3. Bisa ga hanyar ƙirƙira, ana iya raba ƙirƙira zuwa: ①Buɗe ƙirƙira (ƙirƙirar ƙirƙira kyauta).Yi amfani da tasiri ko matsa lamba don naƙasa ƙarfe tsakanin babba da ƙananan maƙarƙashiya (maƙarƙashiya) don samun jabun da ake buƙata.Ana yin ƙirƙira ta hannu da injina.② Ƙirƙirar yanayin rufewa.Ƙarfen ɗin babu abin da ke danne kuma ya naƙasa a cikin jujjuyawar mutuwa mai ƙayyadaddun siffa don samun ƙirƙira, wanda za a iya raba shi zuwa ƙirƙirar mutuwa, mai sanyi, jujjuyawar ƙirƙira, da extrusion.Dangane da yanayin zafin nakasawa, ana iya raba ƙirƙira zuwa ƙirƙira mai zafi (matsalolin sarrafawa ya fi ƙarfin recrystallization na ƙarancin ƙarfe), ƙirƙira mai dumi (ƙasa da zazzabi recrystallization) da ƙirƙira sanyi (zazzabi na yau da kullun).
4. Kayayyakin ƙirƙira sun ƙunshi ƙarfe na ƙarfe da ƙarfe mai ƙarfe tare da abubuwa daban-daban, sannan aluminium, magnesium, titanium, jan ƙarfe, da sauransu.Asalin yanayin kayan ya haɗa da hannun jari, sarkar simintin gyare-gyare, foda na ƙarfe da ƙarfe na ruwa.Matsakaicin yanki na giciye na ƙarfe kafin nakasawa zuwa yanki na giciye bayan nakasa ana kiransa rabon ƙirƙira.Zaɓin madaidaicin ƙimar ƙirƙira yana da alaƙa da haɓaka ingancin samfur da rage farashi.

Nortech yana ɗaya daga cikin manyan masana'antun bawul ɗin masana'antu a China tare da ingantaccen takaddun shaida ISO9001.

Manyan samfura:Butterfly Valve,Ƙwallon Ƙwallon Ƙasa,Gate Valve,Duba Valve,Globe Vavlve,Y-Strainers,Lantarki Acurator,Acurators na Pneumatic .