... ,etc. 4)ISO 9001:2008 SO(Slip On) flange Flange typeSO(Slip On) flangeThis flange is slipped over the pipe and then fillet ... , covers an area of21860 square meters.We supply steel pipe,flange,pipe elbow,pipe bend,reducer,tee,cross,capand other pipe ... Test Equipment Production Equipment asme b 16.47 carbon steel forged flange