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API pipe standards originate from the United States, specifically from the American Petroleum Institute (API). Here's a detailed overview:

What is API?

API stands for the American Petroleum Institute, a commercial association in the United States established in 1919. It is one of the earliest and most successful standard-setting chambers of commerce worldwide. API is responsible for the standardization of equipment used in the petroleum and natural gas industries to ensure the safety, reliability, and interchangeability of the equipment within the industry.

API Pipe Standards

API pipe standards refer to the standards and specifications for spiral steel pipes for pipeline steel launched by API. They are widely used and accepted internationally as one of the popular pipeline steel standards. These standards are primarily applied in the petroleum industry, natural gas industry, and other liquid and gas transmission fields. They stipulate the materials, manufacturing processes, dimensions, and performance requirements for steel pipes, as well as methods and criteria for inspecting and accepting steel pipes.

In terms of materials, API pipe standards primarily adopt steel plate grades ranging from X42 to X100, which correspond to China's L245-L690 steel pipe grades.

Influence and Recognition

API's certification standards enjoy high credibility internationally. Petroleum machinery with the API logo is not only considered reliable in quality but also represents advanced technological levels. These standards are not only adopted by enterprises domestically but also referenced by US federal and state laws and regulations, as well as agencies such as the Department of Transportation, the Department of Defense, the Occupational Safety and Health Administration, US Customs, the Environmental Protection Agency, and the US Geological Survey. Globally, they are referenced by ISO, the International Organization of Legal Metrology, and over 100 national standards.

In summary, API pipe standards are an important benchmark for the global pipeline industry, ensuring the safety, reliability, and efficiency of pipeline systems.