... Gr1,Gr2,Gr3,Gr5,Gr7,Gr9,Gr12 2.Standard:ASME B16.5,ANSI B16.5,DIN2630~2636 3.Flange surface: FF,FG, ... though PN250(ASNI) CL150,CL300,CL600,CL900,CL1500Working temperature-60°C~250°CFlange surfaceFF,RF,TG,RJ etcQuality controlUltrasonic ... .080.0150.300.25/////balGr 50.050.080.0150.400.205.5~6.753.5~4.5///balGr 70. ... the other client needs. Standard Gr2 titanium flange ASME B16.5 for machine equipments