... "-80" material: steel Certification:ISO9001:2000,ISO14001,CE0036 Guarantee: 18months carbon steel flangessize: 1/2"-80"material: steelCertification:ISO9001:2000,ISO14001 ... and BS1868Certification:ISO9001:2000,ISO14001,CE0036 IOS9001 CE good forged carbon steel flanges