ASTM Oil Country Steel Pipe-Dimensions, Characteristics, Process Analysis

What is ASTM Oil Country Steel Pipe?

• ASTM: The full name is American Society for Testing and Materials. It was founded in 1898 and is a global non-profit organization with a very high international recognition. Its members are over 30,000 from more than 140 countries.
• Country Steel Pipe: In the national oil and gas industry, Oil Country Steel Pipe plays a very important role. It is the core equipment supporting drilling, oil production, and oil and gas transmission. The quality of its pipeline will directly affect the safety, life and efficiency of the oil well.

ASTM Oil Country Steel Pipe

ASTM Oil Country Steel Pipe: ASTM Oil Country Steel Pipe refers to pipelines that meet ASTM standards and are used in the oil and gas industry. ASTM is designed to ensure that the oil pipe can still operate normally under extreme conditions of high temperature, high pressure and high corrosion.

ASTM Oil Country Steel Pipe Related Standards

• ASTM A53: It is divided into seamless (Type S) and welded (Type E). This standard is very common in low-pressure oil well casing and oil pipelines.
• ASTM A106: This standard only has seamless steel pipes, which have improved strength through quenching + tempering. It is often used in high-temperature environments and is suitable for drill pipes, steam pipes, etc.
• ASTM API 5L: This standard is jointly formulated by ASTM and API. Common grades are X42, X52, and X80.
• ASTM A335: The secondary standard is the alloy pipe number, which is used for casing and oil pipes in high-temperature and high-pressure oil wells.

Common specifications and parameters

We have listed the common ASTM Oil Country Steel Pipe specifications on the market for you (taking seamless pipe as an example). If you have special size requirements, you can also contact us and we will customize the most suitable size for you.

Characteristics of ASTM Oil Country Steel Pipe

1. High strength and high pressure resistance
Withstanding extreme pressure is one of the core requirements of ASTM oil well steel pipes. For example, the strength of high-strength seamless stainless steel oil well steel pipes is as high as 862 MPa, which is more than twice that of ordinary carbon steel pipes (300-400 MPa). By controlling the carbon content and tempered martensite structure of the steel pipe, the tensile strength of the pipe can reach more than 1000 MPa.
2. Corrosion resistance
The oil well pipe will have strong corrosive media in the use environment, and the alloy element content of the pipe can be controlled to enhance the corrosion resistance.
3. Fatigue resistance
During drilling work, the drill pipe needs to be repeatedly twisted, so the drill pipe must have fatigue resistance. The ASTM standard uses quenching and tempering heat treatment to increase the fatigue limit.

ASTM Oil Country Steel Pipe Process

ASTM standards not only specify product performance, but also impose strict requirements on production processes.

1. Seamless steel pipe production
For the cold rolling and hot rolling processes in the production of seamless pipes, ASTM requires that hot rolling be heated to above 1200 degrees and rolled into steel pipes through a rolling mill, which is suitable for pipes with larger diameters and thicker walls. Cold rolling is suitable for producing small-diameter pipes with higher precision and thinner walls.
2. Welded steel pipe production
ERW welds steel strips into steel pipes through resistance heating, and SAW uses submerged arc welding to produce large-diameter, high-strength pipeline steel.
3. Quality inspection
ASTM has very strict quality standards and requires non-destructive testing (NDT) of each pipe to ensure that there are no internal defects. At the same time, mechanical property tests (tensile, impact) and chemical composition analysis (spectrometer) are carried out to ensure that its strength meets the requirements.