Description:1) Sizes (O.D. x T): form 6 x 1mm to 168 x 12mm 2) Standards: ASTM / ASME213, A312, A269, JIS G3459, G3463, DIN17458 3) Surface: oiled or black painted to prevent rust 4) Marking: as per customer\'s requirement Commonly used steel grade: SUS304, 304L, 321, 316, 304, 316L, 321, and 310S Inner packing: Caps on two ends of every pipe Outer packing: Hexagonal shape bundles wrapped with strong steel trip or according to customers\' requests