API 650 (American Petroleum Institute Standard 650)

API 650 (American Petroleum Institute Standard 650) is a set of technical guidelines for designing, building, and inspecting large steel tanks used to store liquids like oil and chemicals. It ensures tanks are constructed safely, durable, and capable of withstanding environmental conditions and internal pressures. The standard covers aspects such as materials, welding, foundation, and inspection procedures, providing a consistent framework for manufacturers and engineers to produce reliable storage solutions that meet safety and quality requirements.