1、Product Features
Rotary drill pipe is a wearing part of rotary drilling rig. Rotary drilling seriescan be supplied, which features that good strength and tenacity, wonderful weldability as well as geometric dimension (e.g. OD, WT, out-of-roundness, straightness)with high precision and premium surface quality. It can absolutely compare with the like products abroad.
2、Production Range
OD: 42mm～760mm WT: 4mm～120mm
3、Steel Grade and Properties
Technical standard: GB 34109 or technical agreement.
Properties of Steel Pipe | |||||||
Steel Grade | Delivery Condition | Yield | Tensile | Elongation | R.A. | Absorbed-energy | |
Not Less Than | |||||||
Q345B | Hot Rolling or Normalization | 470 | 345 | 20 | — | 20℃(AKV2) | 34 |
27SiMn | Quenching+Tempering | 980 | 835 | 12 | 40 | 20℃(AKU2) | 39 |
30CrMo | Quenching+Tempering | 930 | 735 | 12 | 50 | 20℃(AKU2) | 71 |
35CrMo | Quenching+Tempering | 980 | 835 | 12 | 45 | 20℃(AKU2) | 63 |
42CrMo | Quenching+Tempering | 1080 | 930 | 12 | 45 | 20℃(AKU2) | 63 |
HG550 | Quenching+Tempering | 650 | 550 | 20 | — | -20℃(AKV2) | 34 |
HG650 | Quenching+Tempering | 750 | 650 | 14 | — | -20℃(AKV2) | 40 |
HG850 | Quenching+Tempering | 980 | 835 | 12 | — | -20℃(AKV2) | 63 |
4、 Application Fields
Rotary drill pipe & tube such as 27SiMn, 35CrMoect. are mainly applied in combined drill pipe used for manufacturing of rotary drill rig.
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