World Steel Standard

AISI American Iron and Steel Institute ANSI American Naional Standards API American Petroleum Institute ASME American Society of Mechanical Engineers ASTM ASTM International AWS American Welding Society BS British Standards Institution DIN Deutsches Institute for Normung ISO International Organization for Standardization JIS Japan Industrial Standards KS Korean Industrial Standards MIL Military Specifications and Standards NF Norm Francaise SAE Society of Automotive Engineers UL Underwriters Laboratory UNS Unified Numbering System