Hebei Alland Steel Pipe Manufacturing Co., Ltd.

AllandModel OCTG -Casing Pipe

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OCTG Casing Pipe is a type of pipeline used in petroleum transportation and extraction. Its primary functions include supporting wellbore walls, isolating formations from the pipeline, and preventing wellbore collapse. Octg Casing Pipe is a hollow pipe typically connected via threaded joints and manufactured from high-strength carbon steel. Acting as a protective shell, it isolates soft formations and soil, ensuring smooth oil and gas extraction.

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ALLLAND Steel Pipe Manufacturing. Our OCTG casing pipes are manufactured with advanced techniques, offering exceptional pressure resistance and suitability for deep wells and high-pressure applications. Each pipe undergoes rigorous chemical analysis, mechanical testing, and hydrostatic pressure testing to withstand demanding drilling environments. Compliant with API 5CT standards, our pipes deliver consistent chemical and mechanical properties, ensuring every unit meets industry specifications.

Alllandsteel is a steel pipe manufacturer based in China with 25 years of experience. The facility spans 22,000 square meters, represents a RMB 700 million investment, and operates four production lines (JCOE, ERW, SMLS, SSAW) alongside five coating lines. With an annual production capacity of 250,000 tons, the factory covers specifications ranging from Ø406 to Ø1524 and holds multiple international certifications (API/ASTM/EN/ISO/JIS). Focused on steel pipes, creating value for you!

As a critical pipeline component in oil and gas extraction, what standards and requirements apply to OCTG Casing Pipe? Below, ALLLAND Steel Pipe Manufacturer will outline specifications covering production dimensions, manufacturing processes, standards, and tolerances.

  • Allland OCTG casing pipe production employs rigorous heat treatment to ensure stable mechanical properties and extended service life.
  • Mastery of seamless manufacturing processes yields pipes with superior pressure resistance, making them ideal for deep and high-pressure wells.
  • The factory operates its own testing laboratory, subjecting every pipe to chemical analysis, mechanical testing, hydrostatic pressure testing, and more.
  • The factory supports post-production machining, utilizing CNC machines for end-processing and threading, delivering superior sealing performance.

  • O.D.: 4 1/2“ – 20” (114.3 mm – 508.0 mm), commonly 5“, 5 1/2”, 7“, 9 5/8”, 13 3/8″.
  • W.T.: 0.25“ ~ 1.5” , with increased thickness available based on application requirements.
  • Standards: API 5CT
  • Grades: H40/J55/K55/N80/L80/P110/Q125
  • Process: Seamless process; welded pipes used only for lower grades or large-diameter conduits.
  • Pipe Ends: Plain End, Threaded & Coupled
  • Material: : Carbon steel, alloy steel
  • Surface Finish:  Black paint, oiled, end caps