The API full range of tubing and casing mainly refers to steel pipes conforming to the American Petroleum Institute's API SPEC 5CT standard, primarily used for the extraction of resources such as oil and natural gas. The tubing is used to extract oil or natural gas from oil wells. The casing serves as the wellbore wall for oil and gas wells.
1. API 5CT Oil Casing
Steel Grade: J55, K55, N80-1, N80-Q, L80-1, P110
Thread Type: Long Round (LC8RD), Short Round (STC8RD), Offset Trapezoidal (BTC)
Specifications: 4 1/2", 5", 5-1/2", 6-5/8", 7"
Length Range: R1 (4.88m~7.62m), R2 (7.62m~10.36m), R3 (10... 36m~12m)
2. API 5CT tubing
Steel grade: J55, K55, N80-1, N80-Q, L80-1, P110
Thread type: Non-thickened (NUE10RD), Thickened (EUE8RD)
Specifications: 1.9", 2-3/8", 2-7/8", 3-1/2", 4-1/2"
Length range: R1 (6.1m~7.32m), R2 (8.53m~9.75m)
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