1.casing bushing 2.type:CU CUL CB 3.API Spec 7K ISO9001:2008 4.GB/T 28001- ... 5.GB/T 24001-2004-ISO14 CASING BUSHINGType CU,CUL,CB etc.casing bushings and insert bowls can handle casing from ... O.D. Type CU and CUL are solid bushing; Type CB are split bushings. Rotary table size(in)Bushing TypeCasing Size ...