Ukunemba kokuthwala kuqukethe ukunemba nokunemba kokunemba kobukhulu obuzungezayo kuyiphrojekthi egibela phezu kwamashafu, ehlanganisa ububanzi bangaphakathi, ububanzi bangaphandle, ububanzi, ukubekezelela usayizi we-chamfer noma inani elivunyelwe. ukuchezuka, ukuchezuka kobubanzi bendandatho yobubanzi obuyisilinganiso endizeni eyodwa yomsakazo.ukunemba kokuzungezisayo kuyazungeza Indandatho yangaphakathi kanye nendandatho yangaphandle i-radial swing kanye nokugijima kwe-axial, Uhlangothi lwendandatho yangaphakathi kanye nobubanzi bangaphandle bobubanzi bokubekezelela ububanzi be-perpendicularity.Ibanga lokunemba ukusuka ebangeni elijwayelekile ukusuka ku-0 kuye ku-6, 5, ibanga lesi-4 kanye nebanga lesi-2, ngokulandelayo, ngezansi kuqhathaniswa kwethebula phakathi ikilasi le-preeion le-china GB 307 kanye nokunye okunembayo okujwayelekile.Ibanga lokunemba elikhulu lisuka ebangeni lesi-6, lesi-5, Amazinga 4 no-2 amabanga amane. 

Iringi yangaphandle engu-11, iringi yangaphakathi engu-12, kanye nebhola elingu-13 okuyizinto ezithwalayo zingu-0.95 mass% noma ngaphezulu kanye ne-1.10 mass% noma ngaphansi kwe-carbon, 0.05 mass% noma ngaphezulu futhi ngaphansi kuka-0.3 mass% i-silicon, 0.10 mass% noma ngaphezulu kanye nesisindo esingu-0.50% 11 A semijaho eyindandatho yangaphandle kanye no-12 A wemizila yangaphakathi eyiringi okuyimigwaqo indawo equkethe insimbi equkethe i-manganese elandelayo, i-1.30 mass% noma ngaphezulu, kanye ne-2.00 mass% noma ngaphansi, futhi iqukethe insimbi equkethe insimbi esele kanye nokungcola, kanye nokuthintana nezinye izakhi. Futhi isilinganiso sokugcwala kwenitrogen ezifundeni zongqimba olungaphezulu 11B, 12B, no-13B okuyizifunda ezingaphakathi kokujula okungama-20 μm ukusuka endaweni eginqikayo yebhola engu-13A ingu-0.2% ngobuningi noma ngaphezulu kanye no-0.7% ngesisindo noma ngaphansi, nangaphezulu. izifunda zongqimba 11B, 12B, 13B, 5 noma ngaphezulu ama-carbides anobubanzi obungu-0.5 micrometer noma ngaphansi akhona 100 micrometer.