... tube flange for pipe joint 2.1/2'' to 60'' 3.high quality 4.T/T,L/C 5.API ... ,CE,ISO flange steel pipe flange,ansi flange,tube flange for pipe joint ... , SH, HG,QOST,ETC.CE and certification:ISO9001:2000 , API , BV , SGS, LOIYDApplications range: Petroleum, chemical, power, ... , SH, HG,QOST,ETC.CE and certification:ISO9001:2000 , API , BV , SGS, LOIYDApplications range: Petroleum, chemical, power, ...