... size, dn15-1200 type, slip on, plate, welding neck, blind certificate: iso9001-2000 Welding flanges1) Sizes: DN15 to DN1200, 1/2 ... , BS, SABS, EN1092, UNI, GOST4) Types: plate, slip on, welding neck, blind, thread, socket weld flange5) Process: free forging, plate ... within one month after receiving the formal order10) Inspection: factory in-house self check or Third Party inspection upon requests11 ...