Bend 2D 3D, 4D, 5D etc. SIZE: 1/2 inch-72 inch WALL THICKNESS: SCH-5S to SCH-XXS STANDARD: ANSI B16.9 /DIN 2605-1/2, /DIN 2615 /EN 10253-1/2/3 /JIS B2311 /GOST 17375/17376/17378/17379/30753 MATERIAL:Carbon steel