... and tie-in has K-type (Ministry of Coal MT-79 ), A-type, B-type, C-type and D-type.TypesIt can be divided into ... engineering machinery.Specification and manufacture capacitySpecification: I-type: one ply wire; II-type: two ply wire; III-type: three ply wire.Inner diameter: 6 ... rubber ply, middle rubber ply, outer rubber ply and I, II and III wire braiding ply. The function of inner rubber ...