- Company Name : Hetai Industry Co.,LTD
- About Us : <br> <br>Drill collar <br />1. Materials: <br />Drill collars are manufactured from AISI 4145H modified steel, and are supplied in the" as rolled" surface finish condition. Alternative surface finishes can be provided. <br />2.Trepanning and Heat treatment : <br />Drill collars are trepanned and drifted to API Spec 7. Full-length heat-treatment processes ensure that mechanical properties meet or exceed API Spec 7 requirements. A hardness range of 285-341, Brinell Hardness and Charpy “V” notch minimum impact strength of 40 ft-lb at 70OF are guaranteed one inch below the surface. <br /> <br />Drill pipe <br /> <br />Specification of drill pipes <br />Spec Hetai Industry Co.,LTDight Flat-end Weight External Diameter D Wall Thickness t Grade Upset Type <br /> lb/ft Kg/m inch mm inch mm <br />2-3/8? 6.65 6.27 9.33 2.375 60.3 0.280 7.11 E?X?G?S Upset <br />2-7/8? 10.4 9.72 14.47 2.875 73.0 0.362 9.19 E?X?G?S Upset <br />3-1/2? 13.3 12.32 18.34 3.500 88.9 0.368 9.35 E?X?G?S Upset <br />3-1/2? 15.5 14.64 21.79 3.500 88.9 0.449 11.4 E?X?G?S Upset <br />4? 14.0 12.95 19.27 4.000 101.6 0.330 8.38 E?X?G?S Int Upset <br />4-1/2? 16.6 15.00 22.32 4.500 114.3 0.337 8.56 E?X?G?S Int-Ext Upset <br />4-1/2? 20.0 18.71 27.84 4.500 114.3 0.430 10.92 E?X?G?S Int-Ext Upset <br />5? 19.5 17.95 26.70 5.000 127.0 0.362 9.19 E?X?G?S Int-Ext Upset <br />5? 25.6 24.05 35.80 5.000 127.0 0.500 12.7 E?X?G?S Int-Ext Upset <br />5-1/2? 21.9 19.83 29.52 5.500 139.7 0.361 9.17 E?X?G?S Int-Ext Upset <br />5-1/2? 24.7 22.56 33.57 5.500 139.7 0.415 10.54 E?X?G?S Int-Ext Upset <br /> <br /><br><br>
- Product/Service : Drill collar,Drill pipe,Drill
- Country/Region : China >
- Category : Minerals & Metallurgy
- Contact Person : Christine
- Link More : China Minerals & Metallurgy ,China Other Metals & Metal Products
- Telephone :
- Fax :
- Address : Huashi Shanbei Industry Area Wuxi Jiangsu 214421 China
- Business Type : Trading Company
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