News - API 5L Seamless Steel Pipe: An Important Pipe for Transportation In The Oil and Gas Industry

Basic parameters

Diameter Range: usually between 1/2 inch and 26 inches, which is about 13.7mm to 660.4mm in millimeters.

Thickness Range: The thickness is divided according to SCH (nominal wall thickness series), ranging from SCH 10 to SCH 160. The larger the SCH value, the thicker the pipe wall, and the greater the pressure and stress it can withstand.

End type

Bevel End: It is convenient for welding connection between pipes, which can increase the welding area, improve the welding strength, and ensure the sealing of the connection. The general groove angle is 35°.

Flat End: It is simple to process and is often used in some occasions where the end connection method is not high, or special connection methods such as flange connection, clamp connection, etc. are used.

Length Range
Standard Length: There are two types of 20FT (about 6.1 meters) and 40FT (about 12.2 meters).
Customized Length: It can be customized according to specific engineering needs to meet the installation requirements of special projects.
Protective Cover: Plastic or iron protective cover can be provided to protect the end of the steel pipe from damage during transportation and storage, prevent foreign matter from entering the pipe, and play a sealing and protective role.

API-5L-Grade-X70-Carbon-Steel-Seamless-Pipes-Tubes

Surface Treatment
Natural Color: Maintain the original metal color and surface state of the steel pipe, with low cost, suitable for occasions with low requirements for appearance and weak environmental corrosion.
Varnish: Apply a layer of varnish on the surface of the steel pipe, which plays a certain anti-corrosion and decorative role, and can improve the corrosion resistance and anti-aging performance of the steel pipe.
Black Paint: The black coating not only has an anti-corrosion effect, but also can increase the beauty of the steel pipe to a certain extent. It is often used in some indoor or outdoor environments with requirements for appearance.
3PE (three-layer polyethylene): It is composed of a bottom layer of epoxy powder, a middle layer of adhesive and an outer layer of polyethylene. It has good anti-corrosion performance, mechanical damage resistance and environmental aging resistance, and is widely used in buried pipelines.
FBE (fused bonded epoxy powder): Epoxy powder is evenly coated on the surface of the steel pipe through electrostatic spraying and other processes, and a hard and dense anti-corrosion coating is formed after high-temperature curing, which has excellent anti-corrosion performance, adhesion and chemical corrosion resistance.

Material and Performance

Material: Common materials include GR.B, X42, X46, X52, X56, X60, X65, X70, etc.

Performance Characteristics
High Strength: Able to withstand the high pressure generated by fluids such as oil and natural gas during transportation.
High Toughness: It is not easy to break when subjected to external impact or geological changes, ensuring the safe operation of the pipeline.
Good Corrosion Resistance: According to different use environments and media, choosing appropriate materials and surface treatment methods can effectively resist corrosion and extend the service life of the pipeline.

Application Areas
Oil and Gas Transportation: Used for long-distance oil and gas pipelines, gathering pipelines, etc. on land and sea to transport oil and gas from the wellhead to the processing plant, storage depot or consumer terminal.
Chemical Industry: It can be used to transport various chemical media, such as corrosive liquids such as acids, alkalis, and salt solutions, as well as some flammable and explosive gases.
Other Fields: In the power industry, it is used to transport high-temperature and high-pressure steam and hot water; in the construction industry, it is used to transport fluids in heating, cooling, and water supply systems.