... , GB, DIN, EN 3.Thickness SCH5S to SCH160 Concentric Reducer (CON. RED.), Eccentric Reducer ( ECC. RED.) Executive Standard:ASME/ANSI B16.9 ... , WP316/WP316L, WP317L, WP321, WP321H, WP347, WP347H, 904L etc. Nickel Copper, Carbon Steel, Low Alloy Steel, Alloy Steel Dimension: Seamless: 1 ...