Oil pipes are the core pipelines used to transport oil and natural gas in oil and gas wells, and are divided into two types: seamless pipes and welded pipes. Made of high-strength alloy steel (such as J55, N80, P110) that meets API standards, it has high pressure resistance (up to 100MPa), corrosion resistance (H2S/CO ₂ resistance), and high temperature resistance (-45 ℃ to 180 ℃). Common types of buckles include API round thread (NU), skewed trapezoidal thread (EU), and airtight sealing buckles (such as VAM TOP), with a sealing pressure of 30-80MPa, ensuring safe transportation from the wellhead to the ground. The main uses include: 1 Efficient lifting of oil and gas in vertical or horizontal wells; 2. Increase production operations such as water injection and acid fracturing; 3. Suitable for complex working conditions such as deep wells and shale gas. Its precision machining and strict testing (such as non-destructive testing) ensure the sealing of the wellbore, reduce the risk of leakage, and improve the mining life and safety.