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Page Views: 17 Date Added: 10/06/2008 Last Updated: 10/06/2008 Expiry Date: 10/04/2018 Description: Spiral drill collar is used to reduce contact area with hole so as to valid efficiently bit sticking from differen- tial pressure. Ms brand spiral drill co- llars are manufactured strictly accord-ing to API Spec7-1 and Standare SY5144. Additional photos

Company Information (TIANHE PETROLEUM MACHINERY CO.,LTD)

Company Profile: Tianhe Petroleum Machinery Co.,Ltd. is a modinized medium-scale enterprise specialied in production of oil and gas tools.Established in 1973,it has been a standardized co.,ltd.Till now,under the leadership of tianhe petroleum machinery co.,ltd,we have full-fund subsdiary company :Mudanjiang petroleum drilling tools holding co,ltd;xi'an Joint-venture compangy. Website URL: http://www.tianhechina.net Year Established: 1973 Products/Service: Main products:Drill callars,heavy weight drill pipe,hydraulic bucking units,hydr-aulic bucking units,hydraulic jar teste-rs,drilling tools,workover tools, in wh-ich,3-self-resarched products have obta-ined state grade patent awards,bucking unti and jar tester have got state grade certificate for new focus products.

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