ZJ50/3150ZJ50/3150ZJ50/3150 series oil drilling rigs can be used in 5000 m drilling operation (114mm···
ZJ40/2250ZJ40/2250 Oil Drilling RigIntroductionZJ40/2250 series oil drilling rigs can be used in dri···
ZJ30/1700ZJ30/1700 Oil Drilling RigIntroduction3000m series oil drilling rigs are designed and manuf···
ZJ20/1350ZJ20/1350 Oil Drilling RigIntroduction2000m series oil drilling rigs are designed and manuf···
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