X65

API 5L X65 line pipe is used in a variety of industry applications, most commonly in the petroleum and natural gas industries. It is also used for transport and supply purposes in other industries. The pipe is made from steel, and it is designed to be strong and durable. The thickness of the pipe walls varies depending on the application. For example, thicker walls are typically used for high-pressure applications. The pipes can be either welded or seamless, and they are usually cut to length before being installed. API 5L X65 line pipe is a versatile product that can be used in a variety of industries and applications.

- API 5L X65 PSL-2

API 5L X65 PSL-2 (also known as API 5L X65Q.M or L450Q/M) has a lower value for C, Si, Mn, P, and S than API 5L X65 PSL-1. C, Si, Mn, P, and S have lower values than API 5L X65 PSL-1. Because PSL-2 needs CEq to be less than 0.43 and CEpcm to be less than 0.25. (Ceq stands for carbon equivalent, and it affects the welding ability and strength of steel.) As a result, the mechanical strength of API 5L X65 PSL-2 Pipe (welded and seamless) is limited to the following maximum values: yield strength 450 – 600 Mpa (65300 psi to 87000 psi), tensile strength 535 to 760 Mpa (65300 psi to 87000 psi) (77600 psi to 110200 psi)

- API 5L X65 Sour Service

API 5L X65 sour service pipe (X65QS/MS, L415QS/MS), C maximum is 0.10, Mn maximum is 1.45, Si maximum is 0.45, P maximum is 0.020, S maximum is 0.002, V maximum is 0.10, Nb maximum is 0.08, Ti maximum is 0.06, CEPcm maximum is 0.22. It is necessary to maintain rigorous control over the chemical composition of sour service line pipe. So, to protect the pipe from corrosive conditions such as H2S, low carbon, and low CEPcm values will lower the martensite, which is susceptible to H bubble, so improving the corrosive resistance to H2S Furthermore, P and S should be less than those of standard line pipes. The mechanical strength of these steel line pipes is the same as that of API 5L X65 PSL2 steel line pipes.

- Chemical Composition for API 5L X65 PSL 2 Pipe with t ≤ 0.984”

- Mechanical Properties for API 5L X65 PSL-2 Pipe

Before purchasing an API 5L X65 line pipe, it is important to check the diameter and wall thickness of the pipe to ensure that it meets the required standards. The diameter and wall thickness of API 5L line pipes are specified in ISO 4200 and ASME B36.10M. These standards provide a guide for different size pipes and specify the wall thickness of each size. To check if a particular pipe meets the required standards, refer to these tables. Doing so will help to ensure that the pipe is the right size and has the correct wall thickness. By checking the diameter and wall thickness of the pipe, you can be sure that it meets the required standards and will be suitable for your needs.

- Bend Test

The bending test is a destructive test performed during the production of API 5L line pipes. The test specimen is a welded steel pipe with dimensions and tolerances specified in the relevant standard. The test is conducted by applying a load to the pipe until it cracks or fails. The results of the test are used to determine the quality of the weld and the suitability of the pipe for its intended purpose.

- Flattening Test

The flattening test is a destructive test that provides information about the deformation behavior of a sample when it is subjected to an external force. The test is performed by applying a steadily increasing force to the ends of a steel pipe until the pipe deformities or fails. The results of the test are used to determine the pipe’s yield strength, elastic limit, and ductility. The flattening test is often used in conjunction with the tensile strength and hardness tests to fully characterize the properties of a steel pipe. The flattening test is typically performed on welded steel pipes, as they are more likely to experience deformation during service. The test is also useful for assessing the quality of the weld and determining the location of any potential crack formation. The deformation that occurs during the flattening test can be longitudinal or circumferential, depending on the orientation of the applied force. In most cases, both types of deformation are of interest and both are measured.

- CVN Impact Test

The impact test is a vital quality control check during the production of the API 5L line pipe. Three main areas are tested: the pipe body, the weld seam, and the heat-affected zone. The impact test ensures that the pipe can withstand any sudden external forces that it may encounter in service. This could include being struck by heavy objects or being exposed to extreme temperatures. By testing the pipe to its limits, we can be confident that it will perform as expected in even the most challenging conditions. The impact test is just one of many quality checks that are carried out on API 5L line pipe during production, ensuring that it meets the highest standards.