Overview
OILTIO supplies seamless steel line pipe for long-distance oil & gas transmission, rolled by Shandong Panjin Steel Pipe Manufacturing Co., Ltd. (est. 2017, part of the Luli Group). The mill operates six modernized continuous rolling lines – two Φ159 two-high, two Φ180 three-high and two Φ273 three-high lines – with an annual capacity of 3,000,000 tons of hot-rolled seamless pipe, covering the full supply range of Φ32 ~ Φ356 mm with wall thickness 3.5 ~ 40 mm.
Manufacturing Process
A complete 18-step process line: walking-beam reheating furnace (hot-charging at over 700 °C, heating time reduced by 30%), high-speed hot sawing (single cut under 1 second), cone-type piercing, continuous rolling, extracting, induction heating, tension reducing, cooling, pipe saw mill sizing, straightening, dust blowing and suction, NDT, manual inspection, UV painting, stenciling, automatic packing, automatic labeling, weighing and warehousing.
Quality Control
- 17 sets of magnetic flux leakage (MFL) flaw detectors with strong magnetization, small blind zones and leading-level sensitivity for internal, external and oblique defects
- Multi-channel high-speed signal acquisition for high-speed, stable flaw detection matched to production rhythm
- Dimensional accuracy better than national standard: outer diameter deviation ≤ 0.55%, controlled wall thickness deviation
- Hydraulic pressure testing on every pipe; enterprise internal standard stricter than GB requirements
Supply Range
- Seamless line pipe for oil & gas transmission pipelines
- Also available from the same mill: structural steel pipes, liquid service pipes, high & low pressure boiler pipes, oil casings and boiler pipes
- Steel grades and standards per API 5L / GB/T 9711 or as specified by the project
Contact us for dimensional schedules, steel grades and project pricing.
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