... 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,GR10,GR12SIZEDN10-DN2000 0.6-32MPAPRESSURE RATINGDIN PN6,PN10,PN16 ... case line with foam or as your requirementChoose our flange,Choose high quality and satisfaction!welcome you to buy ...