Seating Nipple-Tianjin Richsen Oil Equipment Co.,Ltd-OCTG/VAM TOP EQ/ PREMIUM CONNECTION/COUPLINGS

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Seating Nipple
http://www.richsen.cn/http://www.richsen.cn/product/showproduct.php?id=77
th threaded connections1.OCTG Seating Nipple Technical Paratemeters Techni...
Drill Sleeves
http://www.richsen.cn/http://www.richsen.cn/product/showproduct.php?id=80
th threaded connections1.OCTG Seating Nipple Technical ParatemetersTechnic...

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