(1) Taw qhia rau seamless steel yeeb nkab cov ntaub ntawv:
GB / T8162-2008 (seamless steel yeeb nkab rau cov qauv siv). Feem ntau yog siv rau cov qauv dav dav thiab cov qauv siv tshuab. Nws cov ntaub ntawv sawv cev (qib): carbon steel No. 20, No. 45 steel; alloy steel Q345, 20Cr, 40Cr, 20CrMo, 30-35CrMo, 42CrMo, thiab lwm yam.
GB / T8163-1999 (seamless steel yeeb nkab rau thauj cov kua). Feem ntau yog siv rau kev xa cov kav dej hauv engineering thiab cov khoom siv loj. Cov ntaub ntawv sawv cev (qib) yog 20, Q345, thiab lwm yam.
wb 3087-2008 (seamless steel yeeb nkab rau qis thiab nruab nrab siab boilers). Feem ntau yog siv nyob rau hauv pipelines rau conveying qis thiab nruab nrab siab kua nyob rau hauv industrial boilers thiab domestic boilers. Cov ntaub ntawv sawv cev yog No. 10 thiab No. 20 steel.
GB / T17396-2009 (kub-dov seamless steel yeeb nkab rau hydraulic props). Nws yog tsuas yog siv los ua kev txhawb nqa hydraulic, lub tog raj kheej thiab cov kab hauv cov mines, nrog rau lwm cov hydraulic kheej kheej thiab kab. Nws cov ntaub ntawv sawv cev yog 20, 45, 27SiMn, thiab lwm yam.
(2) Kev siv cov kav dej seamless steel: 1. Cov kav dej hauv av muaj xws li: cov kav dej hauv av rau kev thauj mus los, kev tshem tawm cov dej hauv av thaum tsim cov tsev, boiler dej kub thauj mus los, thiab lwm yam. 2. Mechanical processing, bearing sleeves, processing machinery accessories, etc. 3. Cov khoom siv hluav taws xob: roj xa hluav taws xob, hluav taws xob tsim cov kav dej. 4. Anti-static kav rau cua fais fab nroj tsuag, thiab lwm yam.