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Spiral drill collar
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Spiral drill collar is made of AISI4145HS Cr-Mo steel in accordance with API Specifications and SY/T5144 Standards. Threads can be processed with cold rolling, coppering or phosphating. We can process double-shoulder threads and other specifications of special threads and can also produce drill collars whose outer diameter is 14 inches.
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Address: 3rd Floor, Block B, Oriental International Mansion Commercial Building, Qinyuan Street, Jiyuan City, Henan Province
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SAF Coolest v1.3 设置面板 OUJSX-ZPVW-WFASE-ZWF
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