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| Port | tianjin |
| Packaging | sea packing |
| Lead Time | 30 days |
The drill pipes material adopts high-performance alloy steel according to USA API standard and strictly checked by chemical content, metallographic structure, geometric dimension, NDT tests etc to ensure the stable quality of the products.
oilfiled drilling Pipe end is upsetted by USD National Oil Well equipment with 1250tons weight. heating treatment is process by oven-type automatic furnace, then straigtened by 6 rollers straigtening machine, whole courese hardness test and ultrasonic inspection.
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