|
发表于 2009-3-23 08:59
|
显示全部楼层
来自: 中国山东威海
回复 1楼 DraftMan 的帖子
this unit is a converted jack up which was built in 2004 Hyndai heavy industry and was converted as a production unit at 2006 ,as the jack up pinion does not work properly so can not bear force during drilling . |
|