Qar qaldan ku saabsan dhexdhoobka carruurtanka waa la isla'aanayaa meel khasankiisa iyo dibadda kale ee carruurta ah carruurta ka soo galayso ku jirin dibadda iyo xaaladaha, si ays ku yimid macluumaad dheer iyo shaqsiyadda. Markaasaa wuxuu ka hadlayaa midnimooyinka (xiriirka amanaanka +15–20% oo ku cad carruurta ah) iyo ugu yaraan tahay saxda haddii (OD ±0.1mm, dibadda ±0.05mm), kuwaas oo aan ku yimid sida ku cararteeda. Xiriirkooda ayaa mid ah carruurta (1010, 1045), carruurta alaynta (4130, 4340), iyo carruurta badbaadada (304, 316), waxa uu diameetarka ahayd 6mm-200mm iyo dibadda kale 0.5–15mm. Isbuuqo qar qaldan ayaa maystay inuu ku jiro sharcadood ama sharciyada caafimaadka, markaasaa ku yaal inuu ku sameeyey qar qaldan si fiican iyo ku samayn doontaan dadkii dibadda. Shaqsiyadda ayaa jiro bright (ku jiraan ku raac Ra ≤0.8μm) ama black (waxaa laga dhigay oil coating si toosan leh ka shaqeeya), iyadoo ay ku jirin electroplating (chrome, nickel) sida ku cararteeda ama ku cararayaasha. Midkiiba carruurta ayaa: hydraulic cylinders (ku jiraan ugu muhiim ah shaqsiyadda dakhalka ee ka shaqeeysa piston movement), dhexdhoobka machineedka, tubing carruurta dhaawaca, iyo componentaadka aaddeecanka (steering columns, brake lines). Qeybinta carruurta ayaa ka hadlay eddy current testing si aad uga qaadeeysa defaatooyinka shaqsiyadda, checks roundness (≤0.05mm deviation), iyo hardness testing (HRB 60–90 carruurta carruurta). Waxa carruurta qar qaldan ayaa ku yimid degmada adeegsiga ah iyo formability, sidoo kale oo ku jirin lacag guulista carruurta ah, si ays ku yimid sida ku cararteeda oo aan ku yimid budget considerations.