API-American Petroleum Institute
BS-British Standards
ASME-American Society of Mechanical Engineers
CSA-Canadian Standards Association
AWWA-American Water Works Association
ASTM-American Society for Testing &Materials
AWS-American Welding society
API-American Petroleum Institute
BS-British Standards
ASME-American Society of Mechanical Engineers
CSA-Canadian Standards Association
AWWA-American Water Works Association
ASTM-American Society for Testing &Materials
AWS-American Welding society