2015年11月3日星期二

10 3/4" Single Plug Cementing Head with Quick latch, BTC

7"         Single Plug Cementing Head with Quick Latch

 9 5/8"   Single Plug Cementing Head with Quick Latch

 10 3/4" Single Plug Cementing Head with Quick Latch

 13 3/8" Single Plug Cementing Head with Quick Latch


































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