GB/T5310-2008seamless steel raj yog ib hom zoo steel raj.Lub boiler raj yog muab faib mus rau hauv dav boiler raj thiab siab siab boiler raj raws li nws cov kub kub kev ua tau zoo.Kev kub siab boiler yeeb nkab yog tsuas yog siv rau kev tsim cov kev kub siab thiab siab dua siab chav boilers, kav dej thiab lwm yam zoo carbon structural steel, alloy structural steel thiab stainless kub resistant steel seamless steel yeeb nkab.[1] Cov raj boiler no ua haujlwm ntawm qhov kub thiab txias, ua kom kub kub thiab dej vapor, uas yog oxidation thiab corrosion.

Qib steel

(1) High quality carbon structural steel hlau 20G, 20MnG, 25MnG. 

(2) Alloy qauv steel 15MoG, 20MoG, 12CrMoG, 15CrMoG, 12Cr2MoG, 12CrMoVG, 12Cr3MoVSiTiB, thiab lwm yam. 

(3) Cov hlau tsis xeb hlau feem ntau siv 1Cr18Ni9, 1Cr18Ni11Nb boiler raj ntxiv kom ntseeg tau cov tshuaj lom neeg muaj pes tsawg leeg thiab cov khoom siv kho tshuab, ua cov dej siab ntsuas, ua kom flaring, compression test.Cov raj hlau xa tuaj rau hauv kev kho cua sov. 

Tsis tas li ntawd, lub microstructure, grain loj thiab decarburization txheej ntawm cov hlau tiav lawm kuj yuav tsum tau.

Ntxiv nrog rau kev kub siab boiler seamless steel rajGB/T5310-2008hais saum toj no, peb lub tuam txhab cov khoom tseem ceeb yog:

ASTMA210 (A10M)-2012Nruab nrab carbon steel boiler thiab superheater seamless steel yeeb nkab, cov khoom tseem ceeb yog SA210 GrA1, SA210GrC;

ASME SA106/SA-106M-2015, cov ntaub ntawv tseem ceeb yog GR.B gr.C;

ASME SA-213/SA-213MCov khoom siv alloy: T11, T12, T22 thiab T23, T91, P92, T5, T5b, T9, T21, T22, T17;

ASTM A335 / A335M ASTM A335 / A335M-2018 Kev Ntsuas, cov ntaub ntawv tseem ceeb yog: P11, P12, P22, P5, P9, P23, P91, P92, P2, thiab lwm yam.