... STEEL ROUND BAR Grade: 321, 410, 416, 420, 420F, 430, 430F, 431, 630, 631, duplex stainless steel 2205, 2207, F51, F60, 329J1, JS2101, JS2304 and ... Bright stainless steel round bar diameter range is Φ4.0-Φ60mm.Peeled Bright ound bar diameter is from Φ40 to Φ300mm.Length Range and allowable ...