(Petroleum, Petrochemical & Natural Gas Industries) ISO 29001 (published in 2003) defines the quality management system requirements for the design, development, production, installation and service of products for the petroleum, petrochemical and natural gas industries. Developed as a direct result of a partnership between ISO and the international oil and gas industry (led by the American Petroleum Institute – API), ISO 29001 specifically focuses on the oil and gas supply chain.

The ISO 29001 standard is based on ISO 9001 and incorporates supplementary requirements emphasizing defect prevention and the reduction of variation and waste from service providers. They also provide global consistency and improved assurance in the supply quality of goods and services from providers. This is particularly important when the failure of goods or services have severe ramifications for the companies and industries involved. This standard is for all organizations working within the oil and gas industry supply chain. Certification to ISO 29001 ensures standardization and improvement within the sector.