... ,gr2,gr3,gr5,gr7,gr9,gr12 2.standard:astm b381,ANSI B16.5,DIN2630-2636,GB/T9116,HG29523 THE DESCRIPTION OF OUR FLANGEitem ... nametitanium flangeSTANDARDASTM,ANSI, DIN, GB,HGMATERIALGR1,GR2,GR3,GR4,GR5,GR7,GR9, ... reportPACKAGEPlywood case line with foam or as your requirementChoose our flange,Choose high quality and satisfaction!welcome you to buy our ...