Straight Seam Submerged Arc Welded Steel Pipes

According to the classification of the offshore oil industry, oil and gas resources with a water depth of more than 300 meters are called deepwater oil and gas, and oil and gas resources with a water depth of more than 1,500 meters are called ultra-deepwater oil and gas. The oil and gas resources mined from the seabed of pipelines are an important way to carry out long-distance pipelines from the seabed.

Because the marine environment is higher than the seismometer, the requirements for the construction and operation safety of submarine pipelines are higher than pipeline connections, and higher requirements are therefore placed on the reliability of deepwater submarine pipelines. So why should deepwater submarine pipelines use straight seam submerged arc welded steel pipes?

Considering various working conditions such as deepwater pipe hydrostatic damage, pipeline placement, pipeline construction, and pipeline span, in addition to meeting general requirements such as high strength, high strength, good welding performance and corrosion resistance, deepwater pipes and pipeline construction are compared below, and also have the following design features.