GB / T8162-2008 (Seamless steel yeeb nkab rau cov qauv). Feem ntau yog siv rau cov qauv dav dav thiab cov qauv siv tshuab. Nws cov khoom sawv cev (hom): carbon steel#20,# 45 steel; alloy steel Q345B, 20Cr, 40Cr, 20CrMo, 30-35CrMo, 42CrMo, thiab lwm yam los xyuas kom meej lub zog thiab flattening xeem.

GB / T8163-2008 (Seamless steel yeeb nkab rau conveying kua). Feem ntau siv hauv engineering thiab cov cuab yeej loj loj los thauj cov kav dej. Cov khoom sawv cev (hom) yog 20 #, 45 #. 55 # Q345 B thiab lwm yam.

GB3087-2008 (Seamless steel kav rau qis thiab nruab nrab siab boilers). Feem ntau yog siv nyob rau hauv industrial boilers thiab domestic boilers los thauj cov kav dej qis thiab nruab nrab siab. Cov ntaub ntawv sawv cev yog 10 thiab 20 steel. Ntxiv nrog rau kev ua kom ntseeg tau cov tshuaj muaj pes tsawg leeg thiab cov khoom siv kho tshuab, kev ntsuas dej siab, crimping, flaring, thiab flattening tests yuav tsum tau ua.

GB5310-2008 (Seamless steel raj rau siab-siab boilers). Feem ntau yog siv rau qhov kub thiab txias thiab high-pressure conveying kua headers thiab pipelines ntawm boilers nyob rau hauv fais fab nroj tsuag thiab nuclear fais fab nroj tsuag. Cov ntaub ntawv sawv cev yog 20G, 12Cr1MoVG, 15CrMoG, thiab lwm yam. Ntxiv nrog rau kev ua kom ntseeg tau cov tshuaj lom neeg muaj pes tsawg leeg thiab cov khoom siv kho tshuab, nws yog ib qho tsim nyog yuav tsum tau ua qhov ntsuas dej siab ib los ntawm ib qho, nrog rau kev sim flaring thiab flattening. Cov yeeb nkab steel yog xa mus rau hauv lub xeev kub-kho. Tsis tas li ntawd, tseem muaj qee qhov yuav tsum tau ua rau microstructure, grain loj, thiab decarburized txheej ntawm cov yeeb nkab steel tiav. 

GB5312-2009 (Carbon steel thiab carbon-manganese steel seamless steel raj rau nkoj). Feem ntau yog siv rau cov kav dej siab I thiab II rau marine boilers thiab superheaters. Cov ntaub ntawv sawv cev yog 360, 410, 460 steel qib, thiab lwm yam.

GB6479-2013 (Seamless steel kav rau high-pressure chiv khoom). Feem ntau yog siv rau kev xa cov kav dej kub thiab kub siab ntawm cov khoom siv chiv. Cov ntaub ntawv sawv cev yog 20 #, 16Mn / Q345B, 12CrMo, 12Cr2Mo, thiab lwm yam.

GB9948-2013 (Seamless steel yeeb nkab rau roj av tawg). Feem ntau yog siv nyob rau hauv boilers, tshav kub exchangers thiab kua pipelines ntawm roj av smelters. Nws cov ntaub ntawv sawv cev yog 20, 12CrMo, 1Cr5Mo, 1Cr19Ni11Nb, thiab lwm yam.

GB18248-2008 (Seamless steel raj rau roj thooj voos kheej kheej). Feem ntau yog siv los ua ntau yam roj thiab hydraulic kheej kheej. Nws cov ntaub ntawv sawv cev yog 37Mn, 34Mn2V, 35CrMo, thiab lwm yam.

GB / T17396-2009 (Kub-dov seamless steel kav rau hydraulic props). Feem ntau yog siv los ua thee mine hydraulic kev txhawb nqa, lub tog raj kheej thiab kab, thiab lwm yam hydraulic kheej kheej thiab kab. Nws cov ntaub ntawv sawv cev yog 20, 45, 27SiMn, thiab lwm yam.

GB3093-2002 (High-pressure seamless steel kav rau diesel xyaw). Feem ntau yog siv rau kev kub siab roj yeeb nkab ntawm diesel cav txhaj system. Cov yeeb nkab steel feem ntau yog txias, thiab nws cov khoom sawv cev yog 20A.

 GB / T3639-2009 (txias kos los yog txias dov precision seamless steel yeeb nkab). Nws yog tsuas yog siv rau cov kav hlau steel rau cov khoom siv kho tshuab thiab cov khoom siv carbon siab uas yuav tsum tau muaj qhov tseeb qhov tseeb thiab qhov chaw zoo. Nws cov khoom sawv cev yog 20, 45 steel, thiab lwm yam.

GB / T3094-2012 (txias kos seamless steel yeeb nkab tshwj xeeb zoo li cov yeeb nkab). Nws yog tsuas yog siv los ua ntau yam qauv thiab qhov chaw, thiab nws cov ntaub ntawv yog cov zoo carbon steel thiab low-alloy structural steel.