... ''flange 3.high quality flange 4.short delivery flange 5.ISO,API,CE Steel flange for flange pipe manufacturer 1. Material: ... , DIN, BS,GB, SH, HG,QOST,ETC.CE and certification:ISO9001:2000 , API , BV , SGS, LOIYDApplications range: Petroleum, chemical, power, ... , DIN, BS,GB, SH, HG,QOST,ETC.CE and certification:ISO9001:2000 , API , BV , SGS, LOIYDApplications range: Petroleum, chemical, power, ...