
Calculations
Tankvision
26
Hauser
API (American Petroleum Institute)
The American Petroleum Institute, commonly referred to as API, is the largest U.S trade
association for the oil and natural gas industry. It claims to represent about 400 corporations
involved in production, refinement, distribution and many other aspects of the petroleum
industry.
The association’s chief functions on behalf of the industry include advocacy and negotiation
with governmental, legal and regulatory agencies; research into economic, toxicological and
environmental effects; establishment and certification of industry standards; and education
outreach. API both funds and conducts research related to many aspects of the petroleum
industry.
GB (Chinese national standards)
GB standards are the Chinese national standards issued by the Standardization
Administration of China (SAC), the Chinese National Committee of the ISO and IEC. GB
stand for Guobiao, Chinese for national standard. Mandatory standards are prefixed "GB".
Recommended standards are prefixed "GB/T". A standard number follows "GB" or "GB/T".