... Drilling Rigs 1. ZJ30~ZJ90 RIG 2. Electrical driven drilling rig 3. Mechanical driven drilling rig 4. SCR DC driving sys Drilling RigsWe can offer drilling rigs ... . Its accessories are according to API specifications.5,000m serial drilling rigs have those types: ZJ50L, ZJ50JD, ZJ50LD, ZJ50JD, ZJ50D ... size(D*L), mmΦ685*1251.6Hook hoisting speed, m/s0-1.53Opening of rotary table, mm952.5Rotary table ...