basic information size range DN15~200mm (1/2\\\\\\\\"~8\\\\\\\\") working pressure PN1.6~6.4Mpa,  150~300LB, 10K, 20K suitable temperature -10~150°C Suitable medium water, gas, oil CF8(304): suitable for nitric acid CF8M(316): suitable for acetic acid Technical Standard Design Standard GB/T122235, ASMEB16.34, BS1873, JIS B2071 Facto to face Std GB/T122221, ASMEB16.10, BS2080, JISB2002 Pressure-Temperature Rating GB/T12224, ASMEB16.34 End-Flange Std GB9113, JB79, ASMEB16.5a, DIN2543~2546, JISB2213~2216, BS4504 Test Standard GB/T13927, API598, ISO5208 Operation Manaul, Pneumatic, Electric