Casing Circulating Sub

Main Specifications:

31/2″IF×41/2″LCSG(BCSG), 31/2″IF×5″LCSG(BCSG),
41/2″IF×51/2″LCSG(BCSG), 41/2″IF×7″LCSG(BCSG),
41/2″IF×75/8″LCSG(BCSG),41/2″IF×85/8″LCSG(BCSG),
41/2″IF×95/8″LCSG(BCSG), 1502 X 4” LCSG(BCSG)
1502 X 5 1/2”LCSG(BCSG) 1502 X 7” LCSG(BCSG)
1502 X 9 5/8”LCSG(BCSG) 1502 X 10 3/4”CSG(BCSG)
1502 X 13 3/8CSG(BCSG) 1502 X 16”CSG(BCSG)
1502 X 18 3/8”CSG(BCSG) 1502 X 20”CSG(BCSG)