Overview
OILTIO supplies drill collars for bottom hole assembly (BHA) weight and stiffness. The heavy-wall seamless tube base is rolled by Shandong Panjin Steel Pipe Manufacturing Co., Ltd., whose six continuous rolling lines (2 × Φ159, 2 × Φ180, 2 × Φ273) deliver 3,000,000 t/a of hot-rolled seamless pipe in the range Φ32 ~ Φ356 mm × 3.5 ~ 40 mm wall – covering standard drill collar body sizes.
Quality Basis
- Whole-process chain from steel making to pipe rolling ensures consistent alloy chemistry
- Magnetic flux leakage flaw detection (17 detector sets) plus NDT step in the standard process line
- Dimensional control better than national standard: OD deviation ≤ 0.55%
- Every pipe hydraulically tested; enterprise standard stricter than GB requirements
Applications
- Weight-on-bit provision and BHA stiffness for vertical and directional wells
- Available as bare drill collar stock or machined-to-configuration on request
Contact us for available sizes and machining options.
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