... :DN6 to DN100 2)Certification:CE, ISO 3)Standard:ISO,GB,DIN,JIS,SMSI We are confident that a trial order ... , 321, 321H3) Standare: ISO, DIN, JIS B2316, SNSI, SMSI, GB/T12459,GB/T,ASME, MSS-SP-79, BS3799,4) Pressure:2000Lb, 3000Lb ... , food, architectural,transportation, exhaust system bw seamless steel ASTM B 16.9 tees