High Strength Drilling Pipe
In order to satisfy the needs of some customers, two high-strength drill pipes have been developed adopting the special high-strength material MT8 and rationally selecting heat processing techniques. While achieving high strength, the product also possesses suitable elongation rate and impact energy. The impact energy of real objects can reach over 70 J below -20℃; the elongation rate is above 17%. Its properties are listed in the table below:
Table of Performance of High Strength Drill Pipe
| HL140T | HL150M | ||
| Pipe Body | Yield Strength | 965/1105 MPa（140/160KSI） | 1035/1138 MPa（150/165KSI） |
| Tensile Strength | ≥1035 MPa（150KSI） | ≥1103 MPa（160KSI） | |
| Elongation % | ≥15 | ≥15 | |
| Impact Energy
（7.5*10*55，-20℃） |
(single)≥47J（35Ft-Lb）
(Average)≥54J (40Ft-Lb) |
(single)≥47J（35Ft-Lb）
(Average)≥54J (40Ft-Lb) |
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