Product Name: API 5CT Grade J55 Tubing Coupling
Type: Tubing Coupling
Standard: API 5CT
Material / Steel Grade: Grade J55 Carbon Steel
Product Specification Level: PSL 1
Nominal Size: 2-7/8 Inch
Surface Treatment: Anti-Rust Oil
Thread Type: EUE (External Upset End) Internal Thread
Application: It is widely applied for onshore oil wells, shallow gas wells and water injection well completion, serving to connect separate tubing segments into an intact downhole tubing string for oil & gas transmission

Source: https://www.landee.cn/api-5ct-grade-j55-tubing-coupling-cs-psl-1-2-7-8-in-eue.html
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