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Drill Collar
 Drill Collar |
Product Description
It's made from rolled or forged AISI4145H chrome-molybdenum steel. The content of chemical composition and microelement is controlled effectively throughout the whole process. According to its different figures and materials, it can be divides into three types:
Type A (columnar): Made from ordinary alloy steel, both inside and outside of the cross section of the pipe are cycloidal
Type B (spiral): Made from ordinary alloy steel, with a spiral chute on the outer surface of the pipe
Type C (non-magnetic): Made from stainless alloy-steel of low magnetic permeability, both inside and outside of the cross section of the pipe are rounded.
| Company: | Suzhou Unionflow-Tech Co., Ltd. |
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