SO Flange RF,12",300#,ASTM A105/ANSI B16.5 1. ... /alloy/Aluminum steel Description of Flange: Production NameSO Flange RF,ANSI B16.5,UNIT WEI1GHT:5KG12",300#,ASTM A105/ ... : Wooden case, Wooden pallet, or according to customer's requirementMain Flangeblind raised faced flange,weld neck flange, slip ... our pursuit daisy(at)dingshengsteel.com SO Flange RF,ANSI B16.5,UNIT WEI1GHT:5KG12",300#,ASTM A105/ ...