... 1/2-48 inch 2.Material: carbon steel, stainless steel 3.Standard: ANSI, JIS, DIN, Stainless steel flanges socket weldANSI B16.5 FlangesWe are ... Spectrum testing for Raw Material 1.We offer carbon steel and stainless steel flanges.2.Sizes: DN15 to DN1200, 1/2 ... on, welding neck, blind, thread, socket weld flange6.Process: free forging, plate cutting, heat treat, machining7.Surface Treat: Anti-rust ...