1.A105 ASME B16.9 carbon steel flange 2.1/2'' to 60'' 3.high quality 4.T/T,L/C carbon steel ... flange 5.API,CE,ISO A105 ASME B16.9 carbon steel flange 1 ... , ANSI, ISO, JIS, DIN, BS,GB, SH, HG,QOST,ETC. ASME B16.11ISO9001:2000 , API , BV , SGS, LOIYDApplications range: Petroleum, chemical ...