Lub cheeb tsam sab nraud ntawm cov yeeb nkab kub-dov seamless feem ntau loj dua 32 hli, thiab phab ntsa tuab yog 2.5-200 hli. Lub cheeb tsam sab nraud ntawm cov yeeb nkab txias-dov seamless tuaj yeem ncav cuag 6 hli, thiab phab ntsa tuab tuaj yeem ncav cuag 0.25 hli. Lub cheeb tsam sab nraud ntawm cov yeeb nkab nyias-phab ntsa tuaj yeem ncav cuag 5 hli thiab phab ntsa tuab tsawg dua 0.25 hli.

Feem ntau siv cov yeeb nkab hlau tsis muaj seamless yog ua los ntawm 10, 20, 30, 35, 45 thiab lwm yam hlau carbon bonded zoo 16Mn, 5MnV thiab lwm yam hlau tsis tshua muaj alloy lossis 40Cr, 30CrMnSi, 45Mn2, 40MnB thiab lwm yam hlau bonded kub dov lossis txias dov.10, 20 thiab lwm yam hlau carbon qis tsim cov yeeb nkab tsis muaj seamless feem ntau yog siv rau cov kav dej kua.45, 40Cr thiab lwm yam hlau carbon nruab nrab ua los ntawm cov yeeb nkab tsis muaj seamless los tsim cov khoom siv kho tshuab, xws li tsheb, tsheb laij teb qhov chaw ntxhov siab. Kev siv dav dav ntawm cov yeeb nkab hlau tsis muaj seamless kom ntseeg tau tias muaj zog thiab kev sim flattening. Cov yeeb nkab hlau kub dov raug xa mus rau hauv cov kub dov lossis kho cua sov. Kev xa khoom txias dov yog kho cua sov.