1.Size: 1/2"--24" 2.Material:carbon steel 3.Certification:ISO9001 4.Standard:ANSI,DIN,JIS, ... Class: 150LB~1500LB 7 Material: Carbon steel. 8 Usage: Petroleum, Chemical, Power, Gas, Metallurgy, Shipbuilding, Construction, etc 9 Packing: Wooden cases or ... to discuss a custom order, please feel free to contact. high quality and low price blind flange