Petroleum and natural gas industries - downhole equipment - lock mandrels and landing nipples 石油和天然气工业.下井设备.锁芯轴和落地接头
2.
Petroleum and natural gas industries - downhole equipment - lock mandrels and landing nipples 石油和天然气工业.下降孔设备.锁紧芯轴和落地螺纹接头
3.
Petroleum and natural gas industries - downhole equipment - lock mandrels and landing nipples iso 16070 : 2005 ; english version en iso 16070 : 2005 石油和天然气工业.下井设备.锁芯轴和落地接头