JIS B2220 is one of the international standards,it’s Japanese Industrial Standard.JIS B2220 standard products contain flanges and pipe fittings products. Haihao Group can manufacture the JIS B2220 standard products with carbon steel,stainless steel,alloy steel and other materials.This stan ...

DIN standards are the results of work at national,European and/or international level.Anyone can submit a proposal for a new standard.Once accepted,the standards project is carried out according to set rules of procedure by the relevant DIN Standards Committee, the relevant Technical Committee o ...

ANSI,which stands for the “American National Standards Institute“, has served as coordinator of the U.S. private sector, voluntary standardization system for more than 90 years. ANSI standard flanges Our mission is to enhance both the global competitiveness of U.S. business and the U ...