... J55 4. 4"-20" Features of the Float collar:1,Float collar & float shoe is the common accessories of the casing, ... go into the well successfully. 2, The float collar and float shoe have the functionof preventing the mud flowing ... , reduce the load of the derrick, control the height of the cement plug. The inside stucture parts adopt ... -FZQ34036531345010MPa10MPa13-3/8"LCSG40CrSY/T5618-2000 API float collar