... COILSTEEL PIPESCERTIFICATEISO9001:2008STANDARDAISI, ASTM, DIN, GB, JISAISI, ASTM, DIN, GB, JISAISI, ASTM, DIN, GB, JISAISI, ASTM, DIN, GB, ... good quality products and services for domestic and foreign customers and have established long-term and stable relationships with ... refrigeration, paper, aerospace, water conservancy, power plants and other industries. 3.Package Each bare coil to be ...