(1) Taw qhia rau Seamless Steel Yeeb Nkab Khoom:
GB / T8162-2008 (Seamless steel yeeb nkab rau kev siv cov qauv). Mas siv rau cov qauv dav dav thiab cov tshuab siv tshuab. Nws cov ntaub ntawv pov thawj (cov qhab nia): Carbon Steel No.3, No. 45 hlau; Alloy Steel Q345, 20CR, 40CR, 20CRMO, 30-35crmo, 42crmo, thiab lwm yam.
GB / T8163-1999 (Seamless Steel Yeeb Nkab Rau Thauj Kua). Mas siv rau cov kua dej xa tawm hauv kev tsim khoom lag luam thiab cov khoom loj. Cov ntaub ntawv sawv cev (qib) yog 20, Q345, thiab lwm yam.
GB3087-2008 (Seamless steel yeeb nkab rau tsawg thiab nruab nrab siab boilers). Motelines tsuas yog siv rau hauv cov kav dej rau kev siv cov kua qis thiab nruab nrab nruab nrab hauv kev lag luam boilers thiab tsev boilers. Cov neeg sawv cev tsis muaj. 10 thiab tsis muaj 20 tus hlau.
GB / T17396-2009 (kub-rolled seamless steel yeeb nkab rau cov khoom siv hydraulic). Nws yog tsuas yog siv los ua cov kev txhawb nqa hydraulic, thooj voos kheej kheej thiab txhua yam hauv cov mines thee, raws li lwm yam khoom siv hydraulic thiab txhua. Nws cov ntaub ntawv sawv cev yog 20, 45, 27simn, thiab lwm yam.
(2) siv ntawm Seamless Steel kav: 1. Cov khoom siv tsheb thauj khoom zoo, siv hluav taws xob hauv av, siv hluav taws xob hauv av, dej fais fab tiam, dej fais fab tiam cov dej xip. 4. Kev tawm tsam cov kav dej zoo li qub rau cov cua fais fab ntoo, thiab lwm yam.