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J55套管短接20寸...

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P110油管4.6p...

2-7 8”L80油...

V-TOP套管N80...

庆阳P110油管-隆...

2-7/8油管N80...

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P110套管TPCQ...

套管L80-隆凯来特...

套管N80 244....

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J55套管11-3/...

齐齐哈尔气密封扣石油...