China Heavy Weight Drill Rod Drill Pipe O. D 3 1 2" with API Spec 7-1

Product Information
Heavy Weight Drill Rod/Drill Pipe is one drilling tool which has a medium-weight and similar to drill pipe. Wall thickness is larger than that of the drill pipe, and it is smaller than drill collar. Generally add between the drill pipe and drill collar when compose the drill string, to prevent mutation of cross section of drill string, and reduce the fatigue of drill pipe. When used in directional well, it can drill with high speed under the condition of lower torque, which reduce the wear and tear of the drill string. Due to the small sidewall contact area, it is not easy to form differential pressure sticking. Produce stantards: API Spec 7-1, API Spec 7-2.
The parameter of Heavy Weight Drill Rod/Drill Pipe.

Size O.DI.DTool Joint O.DTool Joint I.DThread ConnectionMax Elevator DiametreCentral Upset DiametreLengthinmminmminmminmminmminmmmm3 1/288.92 1/457.154 3/4
4 7/8
5120.65
123.82
1272 1/457.15NC383 7/898.434101.694502 1/1652.392 1/1652.394101.62 1/263.55 1/4133.352 1/263.5NC404 3/16106.364 1/2114.32 9/1665.092 9/1665.094 1/2114.32 11/1668.266 1/4158.82 11/1668.26NC464 11/16119.0651272 3/469.852 3/469.852 13/1671.442 13/1671.445127376.26 5/8168.3376.2NC505 1/8130.185 1/2139.75 1/2139.73 1/482.557
7 1/4
7 1/2177.8
184.15
190.53 1/482.555 1/2 FH5 11/16144.466152.43 3/885.723 3/885.723 7/898.423 7/898.424101.64101.66 5/8168.34101.68
8 1/4
8 1/2203.2
209.55
215.94101.66 5/8 FH6 15/16176.217 1/8184.24 1/2114.34 1/2114.351275127

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