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Quick Details

  • Standard: API
  • Standard2: API 5CT
  • Grade Group: API J55-API P110
  • Grade: API J55, API K55, API L80, API N80, API P110
  • Thickness: 8 - 10 mm
  • Section Shape: Round
  • Outer Diameter(Round): 177.8 - 219 mm
  • Place of Origin: Tianjin, China (Mainland)
  • Secondary Or Not: Non-secondary
  • Application: Gas Pipe
  • Technique: Cold Drawn
  • Certification: API
  • Surface Treatment: Galvanized
  • Special Pipe: API Pipe
  • Alloy Or Not: Is Alloy
  • Brand Name: AOKAI
  • Model Number: AOKAISL101018

Packaging & Delivery

Packaging Details bundles
Delivery Time 14 days

Aokai manufactures an extensive range of sand control screens and filtration products including wire wrapped screens, pipe base screens, perforated casings, slotted liners, precise punched slot screens, etc., which are used in various fields such as oil and gas industry, water wells, water supply and treatment, power supply, and industrial and environmental applications. By investing in advanced technology and quality assurance processes, our manufacturing expertise can design and deliver tighter tolerances and greater precision, giving you screen products you can trust in the harshest environments.


Product Description


Slotted Liner utilizes our innovative technology that is the recent advances in laser cutting ,making slotting much economical with much smaller slot widths. The slot patterns include single slotted non-staggered, single slotted staggered, and gang slotted staggered patterns. The slots can be straight or keystone shaped to meet specific open area. The slot size and slotting pattern can be created as required as well. The slotting base pipe is certified to API standards.


Features & Benefits

1. Varied slot sizes and patterns and shapes

2. Lower cost than wire-wrapped screens, in some situation slotted liner now used for the same functionality as sand control screens 

3. Simple installation due to no outer screen added

4. Low risk of collapse and deformity 



1. Where well productivity is small and economics cannot support the use of screens.

2. Ideal for sand control for low fines and clays reservoirs

3. Excellent sand control choice for thermal heavy oil & bitumen reservoirs.

4. Suitable for high CO2/H2S, SAGD, CSS, and CBM 


Slotted Liner

Sorts: API casing  

Length: ≤15m (each)

Outside Diameter: 50~500mm 

Slot Width: (0.10~4)mm ±0.03mm 

Slot Number: as per customer’s requirement

Slot Shapes: straight in line pattern, staggered pattern, spiral pattern

Slot space: as per customer’s requirement

Slotted casings with apertures of 0.20~6mm are wide used in sands prevention of oil and wells. 


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We have been striving to ensure our product quality and customer satisfaction and even exceed their expectation. Our quality management system is certified to ISO9001:2000, GB/T19001-2008/ISO9001:2008. We use a set of programs and processes to monitor and improve our products and services including parts selection standard, manufacturing traceability reports, internal tests, and internal process audits, etc. 





Company Information


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China (Mainland) | Manufacturer, Trading Company
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