Alloy raj thiab seamless raj ob leeg muaj kev sib raug zoo thiab sib txawv, tsis tuaj yeem tsis meej pem. Alloy yeeb nkab yog steel yeeb nkab raws li cov khoom siv (uas yog, cov khoom siv) los txhais, raws li lub npe qhia yog ua los ntawm cov yeeb nkab alloy; Seamless yeeb nkab yog txhais raws li cov txheej txheem tsim khoom (seamless) ntawm cov yeeb nkab steel, uas txawv ntawm cov yeeb nkab seamless yog welded yeeb nkab, suav nrog ncaj seam welded yeeb nkab thiab kauv yeeb nkab.

A335P5 alloy steel yeeb nkab belongs rau alloy yeeb nkab yog siv rautsawg thiab nruab nrab siab boiler(kev ua haujlwm siab feem ntau tsis ntau tshaj 5.88Mpa, ua haujlwm kub hauv qab 450 ℃) cua sov cov yeeb nkab; Siv raukub siab boiler(kev ua haujlwm siab feem ntau yog siab dua 9.8Mpa, ua haujlwm kub ntawm 450 ℃ ~ 650 ℃) cua sov cov yeeb nkab, economizer, superheater, reheater, petrochemical kev lag luam yeeb nkab, thiab lwm yam.

Lwm yam khoom siv yog: 16-50Mn, 27SiMn, 40Cr, Cr5Mo, 12Cr1MoV, 12Cr1MovG, 15CrMo, 15CrMoG, 15CrMoV, 13CrMo 44, T91, 27SiMn, 25CrMo, 30CrMo, 35CrMo, 35CrMoV, 40CrMo, 45CrMo, Cr9Mo, 10CrMo910, 15Mo3,A335P11P22, P91, T91.