Advantages: thin-walled, high precision, small ovality, small allowance for processing. Main standard: din2391, astm a519, en10305-1 Main materials: st45, 1020, e235, e255 (bao steel). Delivery condition: bk. Outer diameter: 50 to 116mm, Wall thickness: 2 to 3mm, Usage: automotive parts, engine cylinder sleeves, liners. Bundled or wooden boxes packed
