ISO 3304 tus qauv yog rau cov kav ntev kawg nkaus seamless steel tubes Kev kho mob rau cov tub ntxhais kawm. International Standard ISO 3304 yog npaj los ntawm Technical Committee ISO / TC 5,
Hlau kav hlau thiab hlau sib txuas.
ISO 3304 Qhia txog:
ISO 464, Hlau thiab steelproducts - Cov kev pabcuam kev npaj txhij txhua.
ISO 260412, Steelproducts forpressure hom phiaj - Kev cai zoo - Ntu 2: Wrought seamless hlab.
ISO 3545, Cov hlab hlau thiab cov tubular zoo li cov khoom siv nrog Cross Cross-Symbols siv los ua tej yam.
ISO 4200, Lub qhov kawg ntawm cov hlua hlau, cov hlua khau thiab cov khoom tsis zoo-Cov qhov dav dav ntawm qhov ntev thiab qhov hnyav rau ib chav tsev ntev.
ISO 6892, Nws yog xim hlau tsis sib haum - Tensile kuaj.
ISO 8492, Cov khoom siv ua xim - Hlab - Kev sib tsom.
ISO 8463, Nws yog xim hlau nrau - Hlab - Drift expanding test.
