... JB, GB, 3,Cert:TUV,ISO9001:2000,NK,BV DIN 2533 flangesize 1/2" to 24" ASME B16.524"to ... SRF,Pressure Class 150Lbs, 300Lbs, 600Lbs, 900Lbs, 1500Lbs, 2500Lbs, /PN6,PN10,PN16,PN20,PN25,PN40/ Class A, B, C, D ... ASME B16.5, ASME B16.47, ASME B16.36,DIN 86341-2000, DIN2505material Carbon steel(ASTM A105, Q235,A350LF2, ... construction, etcSpecial design available as the requirement of customer DIN 2533 flange