Find some standard numbers
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GB: Standards of the People’s Republic of China (State Bureau of Quality Supervision)KS: Specifications of the Korea Industrial Standards Association, Korean Standard
AISI: Specifications of the American Iron and Steel Institute
SAE: Specifications of the Society of Automotive Engineers
ASTM: Specifications of the American Society for Testing and Materials
AWS: Specifications of the American Welding Society
ASME: Specifications of the American Society of Mechanical Engineers
BS: British Standard specifications
DIN: German standard specifications, Deutsch Industrie Normen
CAS: Canadian Standard Association specifications
API: Specifications of the American Petroleum Association
KR: Specifications of the Korean Shipbuilders’ Association
NK: Specifications of the Hihon Kanji Koki
LR: Lloyd’s Register of Shipping
AB: American Bureau of Shipping specifications
JIS: Specifications of the Japanese Industrial Standards Association