API 5CT Steel Pipe is a technical specification standard for casing and tubing steel pipes used in the oil and gas industry. These pipes are designed for applications such as oil and gas drilling, well completion, and fluid transportation under demanding operating conditions.

Common API 5CT casing steel grades include J55, K55, N80-1, N80Q, and P110, each offering different strength and performance characteristics to meet various drilling and production requirements. Casing pipes are primarily used in oil well drilling to stabilize the well structure, prevent collapse, and isolate different underground formations during extraction operations.

According to the API 5CT standard, threaded pipe connections are generally classified into STC (Short Thread Coupling), LTC (Long Thread Coupling), and BTC (Buttress Thread Coupling) types, along with their corresponding joints and couplings. These connection types are selected based on the operational environment, pressure requirements, and drilling conditions.

Product Parameters

Scope of Application

API 5CT oil casing is mainly used to transport oil, natural gas, coal gas, water and other liquids, gases.

Packaging and shipment

Company Profile

Shandong Zhifa Steel Co., Ltd is located in Shandong, China. The company was founded in 2010.There are 67 employees, 233 technicians and 15 managers. At present, it mainly produces stainless steel, galvanized, color-coated and carbon steel. lt is a professional precision steel plant, lt has a modern scientific research center,equipped with a complete set of testing methods such as mechanical performance testing, process performance testing, metallographic testing, high-precision carbon and sulfur analysis, as well as a group of high-quality process technicians and inspection personnel.