Oil pipe

High-quality Pipeline Seamless Steel Pipe , meets API 5L standards, suitable for oil and gas industry. This API 5L Pipeline Pipe is made with seamless steel, and meets all API 5L standards for oil and gas industry use. It has high strength and excellent resistance to corrosion, making it ideal for use in harsh environments. Its durability ensures long service life, and the precision manufacturing ensures a high-quality product. Its wide range of dimensions and grades makes it suitable for a variety of applications in the oil and gas industry. This product has been designed to reduce maintenance costs, improve performance, and increase efficiency.

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API 5CT Oil Pipe: Premium OCTG Casing & Tubing

Ruixiang Steel is a leading manufacturer of high-grade OCTG (Oil Country Tubular Goods). We provide API 5CT certified casing and tubing designed to withstand extreme borehole pressures, high-torque drilling, and corrosive H2S/CO2 downhole environments.

API 5CT Technical Specifications

Requirement	Standard Range
Steel Grades	J55, K55, N80-1, N80-Q, L80, C90, T95, P110, Q125
Dimensions (OD)	Tubing: 2-3/8" – 4-1/2" \| Casing: 4-1/2" – 20"
Thread Types	STC, LTC, BTC, NUE, EUE, and Premium Gas-Tight Connections
Length Range	R1 (4.88–7.62m), R2 (7.62–10.36m), R3 (10.36m+)
Surface Finish	External Bituminous Coating, Internal Plastic Coating (IPC), Bare

Supplementary: API 5L Line Pipe for Transportation

In addition to downhole OCTG, we offer API 5L Pipeline Pipes (Gr.B to X80) for surface transportation systems. These seamless and welded pipes are engineered for high-strength fluid conveyance in harsh environments.

Engineered for Extreme Conditions

Precision Threading

CNC-machined threads verified with API gauges for 100% leak-proof integrity.

Advanced Heat Treatment

Quenching and tempering ensure superior yield strength and collapse resistance.

Rigorous NDT

Full-body Ultrasonic (UT) and Magnetic Particle (MPI) testing to eliminate hidden flaws.

OCTG Frequently Asked Questions

Q: What is the difference between PSL1 and PSL2 for oil pipes?

A: PSL2 provides higher quality requirements including mandatory impact testing, chemical composition limits, and stricter dimensional tolerances compared to PSL1.

Q: Can you provide "Sour Service" pipes?

A: Yes, we provide L80-13Cr and other specialized grades with corrosion-resistant coatings specifically designed for H2S and CO2 rich environments.

Seamless steel pipe

Seamless steel pipe is a kind of long section steel with hollow section and no joints around. It is a kind of economical steel, which is widely used as the pipeline for transporting fluid, such as oil, natural gas, gas, water and some solid materials.

Oil pipe

Rectangular pipe

Rectangular tube is a square rectangular tube, also known as a rectangular hollow section (RHS), is a type of hollow tube with a rectangular cross-section. It is made from steel and is characterized by its four equal sides and uniform wall thickness.