... gr2,gr3,gr5,gr7,gr9,gr12 2.standard:astm b381,ANSI B16.5,DIN2630-2636,GB/T9116,HG29523 THE DESCRIPTION OF OUR FLANGEitem ... , TILL PN250 (ANSI) CL150,CL300,CL600,CL900,CL1500WORKING TEMPERATURE-6--250 0CFLANGE STYLEFF,RF,TG,RJ ,ECT.QUALITY CONTROLLultrosonic testing and ... line with foam or as your requirementChoose our flange,Choose high quality and satisfaction!welcome you to buy our flange.hope ...