... , JB, GB, 3,Cert:TUV,ISO9001:2000,NK,BV DIN 2533 flangesize 1/2" to 24" ASME B16.524"to 80" ASME ... , Estandard ASME B16.5, ASME B16.47, ASME B16.36,DIN 86341-2000, DIN2505material Carbon steel(ASTM A105, Q235,A350LF2,A350LF3 ... , papermaking, construction, etcSpecial design available as the requirement of customer DIN 2533 flange