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Always up to date. In this column you can find the steel pipe related articles, including industry trends, product standards and materials, and some technical guidelines.
Slotted steel pipe is a metal pipe featuring long, precision-cut slits, commonly used in oil fields, water wells, and similar applications. It is produced by creating multiple longitudinal or spiral slits—either aligned or staggered—on oil casing pipes or tubing using ultra-thin cutting blades and beam cutting technology. These slits typically range from 0.2 to 0.5 mm in width. The cross-sections of the slits can be rectangular, trapezoidal (with an angle of 3–8 degrees), or custom shapes such as round holes, ensuring an effective permeability rate of 0.5% to 10%. The arrangement of the slits can also be tailored to meet specific user requirements.
Super Steel Manufacturing Co.,Ltd is professional slotted steel pipe manufacturer, for more details, please contact:sales@super-steels.com
Advantages of Slotted Steel Pipe
Slotted pipes offer a range of outstanding features, most notably excellent corrosion resistance. Thanks to the addition of specialized anti-corrosion materials during manufacturing, the pipes remain chemically stable even when exposed to air for extended periods. Additionally, they boast high durability, performing reliably in harsh environments over long service lifespans without degradation.
Key Product Features of Slotted Steel Pipe
Sand Control Performance:
Suitable for sand wells with particle sizes larger than 0.3 mm.
Precision Slitting:
The slits have high verticality, smooth edges free of burrs, and consistent spacing.
Large Flow Area:
A 27/8" screen pipe with 300 slits per 1.5 meters offers 2.4 times the flow area of a standard oil pipe of the same size.
Full Anti-corrosion Treatment:
Enhanced corrosion and wear resistance significantly extend the service life underground.
High Strength Material:
Manufactured from J55 or N80 petroleum casing, providing excellent strength and resistance to deformation.
Large Inner Diameter:
Facilitates easier pipe string configuration and installation.
Application Fields of Slotted Steel Pipe
Thanks to its exceptional performance and durability, slotted steel pipe is widely used across various industries, including:
1. Water Well Construction
Used as a supporting material, slotted pipes allow groundwater to seep into the pipe while blocking soil and sediment, ensuring clean water intake for agricultural irrigation, industrial supply, and municipal projects.
2. Groundwater Extraction
In groundwater projects, slotted pipes serve as effective filter layers, improving water quality and stabilizing water flow.
3. Oil and Gas Exploration
Commonly employed for formation sampling, hydrogeological testing, and well productivity enhancement. Their special design prevents debris and particles from entering the wellbore, maintaining flow efficiency.
4. Geological Survey and Monitoring
Installed in boreholes for collecting soil, rock, and water samples, slotted pipes support groundwater level monitoring, water quality assessment, and hydrodynamic analysis.
5. Underground Engineering and Soil Stabilization
Key in groundwater control, slotted pipes help prevent soil liquefaction, landslides, and other geological risks, enhancing the safety and stability of underground projects.
6. Environmental Management and Sewage Treatment
Widely used in environmental remediation projects, such as pollutant sedimentation in rivers and lakes, and in solid-liquid separation processes in municipal wastewater treatment facilities.
Important Considerations
When selecting slotted steel pipes for different applications, attention must be paid to factors such as material type, slit dimensions and shapes, and corrosion resistance. It's essential to follow industry standards and specifications to ensure optimal performance. Moreover, safety protocols should be rigorously observed during construction to maintain project quality and efficiency.
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