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　　Oil pipeline is a kind of large diameter pipe material, which can fix oil and gas wellbore or borehole. Casing is inserted into the borehole and fixed with cement to prevent the borehole from separating rock formation and borehole collapse, and to ensure the circulation of drilling mud, so as to facilitate drilling and mining.

　　Steel grade of Oil pipeline: H40, J55, K55, N80, L80, C90, T95, P110, Q125, V150, etc. API 5L Q235 Seamless Carbon Steel Oil Pipeline end processing: short round thread, long round thread, trapezoidal thread, special button, etc. For oil well drilling, Oil pipeline is mainly used to support the wellbore during drilling and after completion, so as to ensure the drilling process and the normal operation of the whole well after completion.

　　After nearly 20 years of hard work, the production of Oil pipeline in our country has grown from scratch, from low price to high price, from low steel grade to API series products to non-API Oil pipeline with special needs, and from quantity to quality has approached the level of foreign Oil pipeline and casing products. China's oil well pipeline market share has exceeded 80%, and has become a net export product for many years.

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