... 25MnG, 15MoG, 20MoG, 12Cr1MoVG, 15CrMoVG, 12Cr2MoG, 12Cr2MoWVTiB, 12Cr3MoVSiTiB,ASTM A106-96a ATSM A213-95a JIS G3461-1988 JIS G3462 ... low and Medium Pressure BoilersGB3087-199910, 20ASTM A179, ASTM A192 ASTM SA179,SA192,BS3059Seamless Steel Tubes for high pressure -- ... , Q390, 10MoVNb, 12CrMo, 15CrMo, 12Cr2MoISO 9329-2-1997 ASTM A161-94Seamless steel tubesfor petroleum crackingGB9948-8610, 20, 12CrMo, ...