trunnion ball valve size: 1/2"-40" material: steel Certification:ISO9001:2000,ISO14001,API6D,CE0036 Guarantee: 18months tunnion ball valvesize: 1/2"-42"material: steelCertification ... Manufacture:ASME B 16.34 and API 6DForged steel check valve: API 602Inspection and Test:API598 or API 6DEnd flange dimension ... :2000,ISO14001,API607,API6D,CE0036 ISO 9001 CE carbon steel trunnion ball valve