... ZJ50JD, ZJ50LD, ZJ50JD, ZJ50D and etc. ZJ50L and ZJ50LD drilling rig have exported to oversea, and obtained reputation of high quality ... smooth and steady, high efficiency, and distribute load automatically.Drilling Rig ModelZJ50/3150JDZJ50/3150LZJ50/3150DNominal drilling depth, m5in, 5in DP3000- ... on boxSling shotDrill floor height, m7.57.57.5Drill floor area(L*W), m11.25*10.6Clear height under rotary ...