Cov yeeb nkab hlau tsis muaj qhov (seamless steel tube) yog ua los ntawm kev tho qhov (perforating) tag nrho cov hlau puag ncig, thiab cov yeeb nkab hlau uas tsis muaj qhov vuam ntawm qhov chaw hu ua cov yeeb nkab hlau tsis muaj qhov (seamless steel tube). Raws li txoj kev tsim khoom, cov yeeb nkab hlau tsis muaj qhov (seamless steel tube) muaj peev xwm muab faib ua cov yeeb nkab hlau kub dov (hot-dov seamless steel tube), cov yeeb nkab hlau tsis muaj qhov (cool-dov seamless steel tube), cov yeeb nkab hlau tsis muaj qhov (cool-drawn seamless steel tube), thiab cov yeeb nkab jacking. Raws li cov duab ntawm qhov seem, cov yeeb nkab hlau tsis muaj qhov (cross-sectional shape), cov yeeb nkab hlau tsis muaj qhov (seamless steel tube) muaj ob hom: puag ncig thiab cov duab tshwj xeeb, thiab cov yeeb nkab tshwj xeeb muaj ntau yam duab nyuaj xws li cov yeeb nkab plaub fab (square), oval, triangular, hexagonal, melon-puab, lub hnub qub-puab, thiab cov yeeb nkab finned. Qhov loj tshaj plaws yog txog li 900 hli thiab qhov tsawg kawg nkaus yog 4 hli. Raws li kev siv sib txawv, muaj cov yeeb nkab hlau tsis muaj qhov (thick-walled seamless steel tube) thiab cov yeeb nkab hlau tsis muaj qhov (thin-walled seamless steel tube). Cov yeeb nkab hlau tsis muaj qhov (seamless steel tube) feem ntau yog siv ua cov yeeb nkab roj av geological drilling, cov yeeb nkab tawg rau kev lag luam petrochemical, cov yeeb nkab boiler, cov yeeb nkab bearing, thiab cov yeeb nkab hlau structural steel high-precision rau tsheb, tsheb laij teb, thiab aviation.

Ib lub yeeb nkab hlau uas tsis muaj qhov sib txuas raws ntug ntawm nws qhov seem. Raws li ntau txoj kev tsim khoom, nws muab faib ua cov yeeb nkab kub dov, cov yeeb nkab txias dov, cov yeeb nkab txias rub, cov yeeb nkab extruded, cov yeeb nkab jacking, thiab lwm yam, txhua yam muaj lawv tus kheej cov txheej txheem.

Cov ntaub ntawv suav nrog cov hlau carbon zoo tib yam thiab zoo, hlau tsis tshua muaj hlau, hlau alloy, thiab lwm yam.

Raws li lub hom phiaj, nws muab faib ua ob pawg: lub hom phiaj dav dav (rau dej, cov kav dej roj thiab cov khoom siv, cov khoom siv kho tshuab) thiab lub hom phiaj tshwj xeeb (rau boilers, kev tshawb nrhiav geological, bearings, acid tsis kam, thiab lwm yam).

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. Kev dov muaj qhov tseeb siab dua li kev dov kub. Feem ntau, cov yeeb nkab hlau seamless yog ua los ntawm 10, 20, thiab lwm yam, cov hlau sib xyaw ua ke.P5, P9, P11, P22, P91, P92, 15mog, 20mog, 12crmog, 15crmog, 12cr2mog, 12crmovg, thiab lwm yam.10, 20thiab lwm yamCov kav dej tsis muaj carbon steel seamlessfeem ntau yog siv rau cov kav dej xa dej. Feem ntau, cov kav hlau tsis muaj qhov sib txuas yog siv los xyuas kom muaj zog thiab kev sim tiaj tus. Cov kav hlau kub dov raug xa mus rau hauv lub xeev kub dov lossis kho cua sov; cov kav hlau txias dov raug xa mus rau hauv lub xeev kho cua sov.